JP2006009894A - Seal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal capable of securing sealing performance while using a water-based vulcanizable adhesive, as the seal constituted of a core bar and a rubber member and obtained by forming the rubber member integrally with the core bar via the vulcanizable adhesive. <P>SOLUTION: As the vulcanizable adhesive, an undercoating adhesive comprising resole type phenol resin of which content rate is ≥1 mass% and ≤10 mass%, alkylene glycol monoalkyl ether of which content rate is ≥10 mass % and ≤45 mass%, and water, and a topcoating adhesive which comprises novolak type phenol resin, alkylene glycol monoalkyl ether and water and in which the content rate of resole type phenol resin is ≥1 mass% and ≤10 mass% and the content rate of alkylene glycol monoalkyl ether is ≥10 mass% and ≤45 mass% are used. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is composed of a cored bar and a rubber member, obtained by integrally molding the rubber member on the cored bar via a vulcanizing adhesive, closing between two members that move relative to each other, The present invention relates to a seal that includes an engaging portion that engages with a member and is used by bringing a lip portion that is a part of the rubber member into contact with the other member.

Conventionally, in order to prevent grease existing in the interior and dust generated during use from leaking to the outside or dust floating outside to enter the interior, the rolling bearing is provided between the outer ring and the inner ring. A seal is installed. An example of a rolling bearing with such a seal is shown in FIG.
The rolling bearing in this figure is a double-seal bearing with seals on both sides. The seal 1 includes a ring-shaped cored bar 2 having a flange on the outer periphery, and a rubber member 3 integrally formed by vulcanization on the outside thereof. It consists of and.

In view of its function, the seal 1 is composed of an annular main portion 11 made of a rubber member outside the core metal flange and the outer rubber member, and a core metal flange and the outer rubber member. It is divided into a caulking portion 12 locked in the groove 41 and a lip portion 13 made of a rubber member on the inner peripheral side of the core metal and disposed in the receiving groove 51 on the outer peripheral surface of the inner ring. Moreover, the receiving groove 51 of this rolling bearing has a sliding contact surface 51a that makes the lip portion 13 slide contact (sliding contact) from the axial direction.
The seal 1 is pushed into the retaining groove 41 on the inner peripheral surface of the outer ring while elastically deforming the crimping portion 12 with the lip portion 13 in contact with the sliding contact surface 51a of the receiving groove 51 on the outer peripheral surface of the inner ring. Is arranged between the outer ring 4 and the inner ring 5 of the rolling bearing.

  In addition, a seal is attached to the automobile hub unit in order to close the space between the outer ring equivalent member and the inner ring equivalent member at both axial ends. An example of an automobile hub unit is shown in FIG. The hub unit includes an outer ring equivalent member 61, an inner ring equivalent member 62, a ball 63, a cage 64, a first seal 65, and a second seal 66. In this hub unit, the mounting flange 61a of the outer ring equivalent member 61 that is a stationary side member is fixed to the suspension device of the vehicle body, and the wheel is fixed to the mounting flange 62a of the inner ring equivalent member 62 that is a rotation side member.

  Two rows of outer ring raceways 61b are formed on the outer ring equivalent member 61, and two rows of inner ring raceways 62b are formed on the inner ring equivalent member 62, and balls 63 are disposed between the two raceways. A first seal 65 is a slinger 67 at one end in the axial direction of the space 21 in which the ball 63 between the outer ring equivalent member 61 and the inner ring equivalent member 62 is disposed (on the right side of the two rows of balls 10 in FIG. 2). It is attached with. A second seal 66 is attached to the other axial end of the space 21 (the left side of the two rows of balls in FIG. 2). An enlarged view of the first seal 65 is shown in FIG. 3, and an enlarged view of the second seal 66 is shown in FIG.

As shown in FIG. 3, the 1st seal | sticker 65 is comprised with the metal core 651 and the rubber member 652 integrally molded by this. The outer ring equivalent member 61 has an inner peripheral surface 61 c and an end surface 61 d for attaching the first seal 65.
The metal core 651 is formed by integrating a cylindrical edge portion 651a that is fitted into the inner peripheral surface 61c of the outer ring equivalent member 61, a disc portion 651b that is in contact with the end surface 61d, an inclined portion 651c, and an inner disc portion 651d. Shape. The slinger 67 is a cylindrical portion 67a that is fitted on the outer peripheral surface of one end in the axial direction of the inner ring equivalent member 62, and a disc-shaped edge portion 67b that extends from the axially outer end (right side in FIG. 3) of the cylindrical portion 67a toward the outside in the diameter direction. Is an integrated shape. The rubber member 652 has two lip portions 652a and 652b that are in sliding contact with the cylindrical portion 67a of the slinger 67, and one lip portion 652c that is in sliding contact with the disk-like edge portion 67b of the slinger 67.

As shown in FIG. 4, the 2nd seal | sticker 66 is comprised with the metal core 661 and the rubber member 662 integrally molded by this. The outer ring equivalent member 61 is formed with an inner peripheral surface 61e and an end surface 61f for attaching the second seal 66.
The metal core 661 includes a cylindrical edge portion 661a that is fitted into the inner peripheral surface 61e of the outer ring equivalent member 61, a first disc portion 661b, a first inclined portion 661c therebetween, and a second disc portion 661d. And the 2nd inclination part 661d between the inclination part 661c and the 2nd disc part 661d is the shape integrated. The rubber member 662 has a radial seal lip portion 662a that is in sliding contact with the outer peripheral surface of the inner ring equivalent member 62, and two side seal lip portions 302 and 303 that are in sliding contact with the base end surface 620 of the mounting flange 62a of the inner ring equivalent member 62. .

  In addition, a seal is attached to a water pump used for a water-cooled engine of an automobile in order to prevent water from entering a bearing that supports a rotating shaft and leakage of grease in the bearing. In this water pump, for example, as shown in FIG. 5, a plurality of bearings J (in FIG. 5, a plurality of bearings J in which the central portion of the rotating shaft S having an impeller 71 fixed at one end are arranged at intervals in the axial direction. The outer peripheral surface of the outer ring formed integrally is displayed instead of the cross section of the bearing portion. A cooling water container 73 into which the cooling water W is put is fixed to the casing 72.

By sealing the gap between the bearing J and the impeller 71 with the seal 100, it is difficult for the cooling water or water vapor generated by evaporation of the cooling water due to heat to enter the bearing.
As shown in FIG. 6, the seal 100 includes a core metal 200 and a rubber member 300. The rubber member 300 has two lip portions 301 and 302 facing the cooling water container 73 side and one lip portion 303 facing the bearing J side. Further, a slinger 8 is fitted on the rotation shaft S of the water pump 7. In the state of FIG. 6, the seal 100 is attached by locking the caulking portion 150 in a stop groove 410 provided on the inner surface of the outer ring 40. By this attachment, the lip portion 301 contacts the outer peripheral surface of the small cylindrical portion 81 of the slinger 8, the lip portion 302 contacts the outer peripheral surface of the large cylindrical portion 82 of the slinger 8, and the lip portion 303 contacts the rotating shaft S. It will be in the state.

  Another example of the seal for the water pump is shown in FIG. The rubber member 300 of the seal 100 has two lip portions 301 and 302 facing the cooling water container 73 side and one lip portion 303 facing the bearing J side. Further, a slinger 8 is fitted on the rotation shaft S of the water pump 7. Another rubber member 9 is fixed to the large cylindrical portion 82 of the slinger 8. The rubber member 9 has a lip portion 91 that is brought into contact with the end face of the outer ring 40. Then, the lip portion 301 is brought into contact with the outer peripheral surface of the small cylindrical portion 81 of the slinger 8, the lip portion 302 is brought into contact with the inner peripheral surface of the large cylindrical portion 82 of the slinger 8, and the lip portion 303 is brought into contact with the rotating shaft S. The lip portion 91 is used in contact with the end surface of the outer ring 40.

1, 3, and 4 are described in Patent Document 1 below, the water pump in FIG. 5 and the seal in FIG. 6 are described in Patent Document 2 below, and the seal in FIG. 7 is described in Patent Document 4 below. Has been.
Typical materials for these seals are steel plates such as SPCC and SECC as the core metal, and members made of synthetic rubber such as nitrile rubber, acrylic rubber, silicon rubber, and fluorine rubber as the rubber member forming the lip portion and the like. Is used. And this seal | sticker is manufactured by integrally forming a rubber member, after performing chemical conversion treatment, such as a zinc phosphate process, to a metal core, applying a vulcanized adhesive, and drying it.

Examples of the vulcanized adhesive that can be used for manufacturing such a seal include those described in Patent Document 4 below.
The vulcanized adhesive described in Patent Document 4 comprises a resol type phenol resin, a silane coupling agent, an alkylene glycol monoalkyl ether, and water. This adhesive is an aqueous vulcanized adhesive in which consideration is given to the environment by using a water-soluble solvent instead of a volatile organic solvent that has been conventionally used.

Patent Document 5 describes an adhesive composition comprising polyester-based urethane having an isocyanate group, chloroprene rubber, polyisocyanate, halogenating agent, and 2-ethylhexoates. Further, it is described that halogenated hydrocarbons such as methylene chloride, 1,1,1-trichloroethane, trichloroethylene, perchloroethylene, carbon tetrachloride and the like are used as a solvent for this adhesive.
JP 2003-314700 A Japanese Patent Laid-Open No. 9-21397 JP 2003-227523 A JP 2004-51735 A Japanese Patent Laid-Open No. 5-140529

As described above, the seals used for rolling bearings, automobile hub units, water pumps, and the like have a portion where the rubber member is not bonded to the entire surface of the metal core, rather than the rubber member being bonded by vulcanization. Then, the pressure when the core member is put into the mold and the rubber member is integrated by compression molding or injection molding may cause cracking or peeling in the adhesive layer starting from the portion. In connection with this, there exists a possibility that the sealing performance by a seal | sticker may fall.
An object of the present invention is to use a water-based vulcanized adhesive as a seal that is composed of a metal core and a rubber member, and is obtained by integrally molding the rubber member on the metal core via a vulcanized adhesive. The object is to provide a device that can ensure sealing performance.

  In order to solve the above-mentioned problems, the present invention comprises a cored bar and a rubber member, and is obtained by integrally molding the rubber member on the cored bar via a vulcanized adhesive, and is relatively moved. In the seal used to close the gap between the two members and to be locked to one member, and to use the lip portion that is a part of the rubber member in contact with the other member, as the vulcanized adhesive, It consists of a resol-type phenol resin, an alkylene glycol monoalkyl ether, and water. The content of the resol-type phenol resin is from 1% by mass to 10% by mass, and the content of the alkylene glycol monoalkyl ether is from 10% by mass to 45% by mass. It consists of an undercoat adhesive, a novolac type phenolic resin, an alkylene glycol monoalkyl ether and water, and contains a resol type phenolic resin There is provided a seal characterized by 1 wt% to 10 wt%, the content of alkylene glycol monoalkyl ether is obtained by using a top coat adhesive or less 45 wt% to 10 wt%.

  A novolac type phenol resin is a phenol resin obtained by addition condensation of phenol and formaldehyde under acidic conditions, and has a structure in which a phenyl group is bonded by a methylene bond without having a methylol group. Resol-type phenolic resin is a phenolic resin obtained by addition condensation of phenol and formaldehyde under basic conditions. It has many methylol groups, phenyl groups are methylene bonds, and methylol groups are bonded by ether bonds. is there.

As the alkylene glycol monoalkyl ether, ethylene glycol monoalkyl ethers such as ethylene glycol monobutyl ether and ethylene glycol monoisopropyl ether are preferable.
Adhesive performance can be improved by applying a silane coupling agent before the undercoat adhesive, or by mixing the silane coupling agent into the undercoat adhesive and the topcoat adhesive. In that case, as a silane coupling agent to be used, an amino-type silane coupling agent with high bondability with a phenol resin is preferable.

Examples of amino-based silane coupling agents include γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, and γ- (polyethylene). ) Aminopropyltrimethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, and the like.
When a silane coupling agent is mixed in the undercoat adhesive and the topcoat adhesive, it is preferable that the content of the silane coupling agent in the adhesive is 1% by mass or more and 10% by mass or less.

  The present invention is also composed of a cored bar and a rubber member, obtained by integrally molding the rubber member on the cored bar via a vulcanized adhesive, and plugs between two members that move relative to each other, In a seal that includes a locking portion that locks to one member, and is used by contacting a lip portion that is a part of the rubber member with the other member, as the vulcanized adhesive, a resol type phenol resin, It consists of a silane coupling agent, an alkylene glycol monoalkyl ether and water, and the content of the resol type phenol resin is 1% by mass to 10% by mass, and the content of the silane coupling agent is 1% by mass to 10% by mass. In addition, the present invention provides a seal obtained by using an adhesive having an alkylene glycol monoalkyl ether content of 10% by mass or more and 45% by mass or less.

  The method for applying the adhesive may be any of dip coating, spray coating, and electrostatic coating. In the case of dip coating, it is preferable to immerse a plurality of times by increasing the concentration of the solvent (alkylene glycol monoalkyl ether and water) when the content of the phenol resin is in the range of 1% by mass to 10% by mass. After apply | coating an adhesive agent, an adhesive bond layer is formed by performing the baking process hold | maintained at 120-200 degreeC for 5 to 30 minutes. You may perform this baking process for every immersion. When the content of the phenol resin exceeds 10% by mass or less, the thickness of the adhesive layer tends to be uneven.

The thickness of the adhesive layer is 1 μm or more and 30 μm or less, preferably 3 μm or more and 20 μm or less. If the thickness of the adhesive layer is less than 1 μm, sufficient adhesive strength cannot be obtained. When the thickness exceeds 30 μm, cracking and peeling are likely to occur in the adhesive layer starting from a cored bar portion to which the rubber member is not bonded due to the pressure when the rubber member is integrated.
The material of the rubber member is a synthetic rubber such as nitrile rubber, acrylic rubber, silicon rubber, or fluorine rubber. Moreover, you may add a reinforcing agent, a vulcanizing agent, and a plasticizer to these synthetic rubbers suitably.

  According to the seal of the present invention, a water-based vulcanized adhesive is used as a seal that is constituted by a metal core and a rubber member, and is obtained by integrally molding the rubber member on the metal core via a vulcanized adhesive. The sealing performance can be secured while using

Hereinafter, embodiments of the present invention will be described.
[First Embodiment]
A SPCC steel plate and a nitrile rubber plate were prepared as test pieces for the 90-degree peel test of “JIS Z 6256”. After performing degreasing and chemical conversion treatment on the adhesive surface of the SPCC steel sheet, an adhesive layer composed of an undercoat adhesive and an overcoat adhesive shown in Table 1 below was formed by a dipping method. Specifically, immersion was performed twice, and after each immersion, after baking at room temperature, a baking process of holding at 170 ° C. for 10 minutes was performed. The thickness of the undercoat adhesive was 3 μm, and the thickness of the topcoat adhesive was 7 μm.

Next, a plate made of nitrile rubber was placed on the surface of the SPCC steel plate on which the adhesive layer was formed, and heated to 180 ° C. for 5 minutes under a pressure of 4.5 MPa from above. As a result, the SPCC steel plate and the nitrile rubber plate were vulcanized and bonded.
Each sample obtained in this manner was subjected to a 90-degree peel test at a temperature of 25 ° C. based on “JIS Z 6256”. This test is performed after each sample obtained is placed in a constant temperature and humidity chamber at a temperature of 80 ° C. and a humidity of 90% (after 72 hours, 168 hours, 336 hours, and 500 hours). The rubber remaining rate on the bonded surface was measured. The results are shown in Table 1. “◯” indicates that the rubber remaining rate is 96% or more, and “Δ” indicates that the rubber remaining rate is 90% or more.

Moreover, the seal 1 of FIG. 1 was produced by the following method.
First, a cored bar 2 is produced by pressing a SECC steel sheet, and after degreasing and chemical conversion treatment is performed on the entire surface of the cored bar 2, an undercoat adhesive and an overcoat adhesive shown in Table 1 below are used. The adhesive layer which consists of was formed by the immersion method. Specifically, immersion was performed twice, and after each immersion, after baking at room temperature, a baking process of holding at 170 ° C. for 10 minutes was performed. The thickness of the undercoat adhesive was 3 μm, and the thickness of the topcoat adhesive was 7 μm.
Next, a rubber member 3 made of nitrile rubber is prepared by placing the following rubber composition in a vulcanization mold for forming a seal and performing heat and pressure molding under conditions of a temperature of 180 ° C., a pressure of 5 MPa, and a treatment time of 3 minutes. Were molded integrally on the outside of the cored bar 2 through vulcanized adhesives having the respective compositions shown in Table 1.

<Rubber composition components and their blending ratio>
Raw rubber: 100 parts by mass of medium and high nitrile NBR (“Nipol 1042” manufactured by Nippon Zeon Co., Ltd.) Vulcanizing agent: 0.5 parts by mass of highly dispersible sulfur (“Sulfax PMC” manufactured by Tsurumi Chemical Co., Ltd.) Sulfur Accelerator A: 0.8 part by mass of “Noxeller TT-P” manufactured by Ouchi Shinsei Chemical Co., Ltd. Vulcanization Accelerator B: “Noxeller TET-G” manufactured by Ouchi New Chemical Co., Ltd. 5 parts by mass Vulcanization accelerator C: 1.0 part by mass of “Noxeller CZ-G” manufactured by Ouchi Shinsei Chemical Industry Co., Ltd. Vulcanization accelerator A (also serves as a lubricant): Stearic acid (manufactured by Kao Corporation) 1.0 part by weight of “Lunac S-35”) Vulcanization accelerating aid B: 5.0 parts by weight of zinc oxide (“French Law No. 1” manufactured by Sakai Chemical Co., Ltd.)

Anti-aging agent A: 2.0 parts by mass of “Nocrack CD” manufactured by Ouchi Shinsei Chemical Industry Co., Ltd. Anti-aging agent B: 1.0 parts by mass of “Sannok” manufactured by Ouchi New Chemical Co., Ltd. Carbon black: Mitsubishi Chemical Co., Ltd. “Dia Black H” 50.0 parts by mass Baking clay: Tsuchiya Kaolin Co., Ltd. “SATINTONE No. 5” 30.0 parts by mass Plasticizer: Polyethylene glycol 600 monolaurate (Sanyo Trading) 5.0 parts by mass of processing aid: “TE80” (obtained from Sanyo Trading Co., Ltd.) 2.0 parts by mass Each sample of seal 1 shown in FIG. 1 thus obtained About whether or not peeling or cracks occurred in the adhesive layer. The results are also shown in Table 1 below.

  As a result, the vulcanized adhesive is composed of 5% by mass of a resol type phenol resin, 10% by mass to 45% by mass of ethylene glycol monobutyl ether, the remaining water or 3% by mass of γ-aminopropyltriethoxysilane and water. Uses an undercoat adhesive, 5% by mass of a novolak-type phenolic resin, 10% by mass to 45% by mass of ethylene glycol monobutyl ether, the remaining water or 3% by mass of γ-aminopropyltriethoxysilane, and water. By doing so, an undercoat adhesive composed of 5% by mass of a resol type phenol resin, 5% by mass of ethylene glycol monobutyl ether, the remaining water, 5% by mass of novolac type phenol resin, and 10% by mass or more and 45% by mass of ethylene glycol monobutyl ether. % Or less and the remaining water or γ-amino Than using an overcoat adhesive made of triethoxysilane 3 wt% of water also, it can be seen that good adhesive performance.

  In addition, as a vulcanized adhesive, an undercoat adhesive composed of 5% by mass of a resol type phenol resin and 95% by mass of toluene and an overcoat adhesive composed of 5% by mass of a novolac type phenol resin and 95% by mass of toluene are used. Although good adhesion performance can be obtained, using toluene has problems in terms of working environment and environmental pollution.

[Second Embodiment]
A SPCC steel plate and a nitrile rubber plate were prepared as test pieces for the 90-degree peel test of “JIS Z 6256”. After performing degreasing and chemical conversion treatment on the adhesion surface of the SPCC steel sheet, an adhesive layer made of an adhesive having each composition shown in Table 2 below was formed by a dipping method. Specifically, immersion was performed twice, and after each immersion, after baking at room temperature, a baking process of holding at 170 ° C. for 10 minutes was performed. The thickness of the adhesive layer was 10 μm.

Next, a fluororubber plate was placed on the surface of the SPCC steel plate on which the adhesive layer was formed, and heated to 180 ° C. for 5 minutes under a pressure of 4.5 MPa from above. As a result, the SPCC steel plate and the fluororubber plate were vulcanized and bonded.
Each sample obtained in this manner was subjected to a 90-degree peel test at a temperature of 25 ° C. based on “JIS Z 6256”. This test is performed after each sample obtained is placed in a constant temperature and humidity chamber at a temperature of 80 ° C. and a humidity of 90% (after 72 hours, 168 hours, 336 hours, and 500 hours). The rubber remaining rate on the bonded surface was measured. The results are shown in Table 1. “◯” indicates that the rubber remaining rate is 96% or more, and “Δ” indicates that the rubber remaining rate is 90% or more.

Moreover, the seal 1 of FIG. 1 was produced by the following method.
First, a cored bar 2 is produced by pressing a SECC steel plate, and the entire surface of the cored bar 2 is subjected to degreasing and chemical conversion treatment, and then an adhesive layer made of an adhesive having each composition shown in Table 2 below. Was formed by a dipping method. Specifically, immersion was performed twice, and after each immersion, after baking at room temperature, a baking process of holding at 170 ° C. for 10 minutes was performed. The thickness of the adhesive layer was 10 μm.
Next, the following rubber composition is put into a vulcanization mold for forming a seal, subjected to heat and pressure molding under conditions of a temperature of 170 ° C., a pressure of 5 MPa, and a treatment time of 3 minutes, and then heated in a 230 ° C. oven. Time secondary vulcanization was performed. Thereby, the rubber member 3 made of fluororubber was integrally formed on the outside of the cored bar 2 through the vulcanized adhesive having the respective compositions shown in the table.

<Rubber composition components and their blending ratio>
Fluoro rubber: 100 parts by mass of “Daiel G-701” manufactured by Daikin Industries, Ltd. Carbon black: 20.0 parts by mass of “Thermax N-990” manufactured by CANCARB Ltd. Vulcanization accelerator D: Calcium hydroxide (Omi Chemical) Industrial Co., Ltd. “CALDIC-2000”) 6.0 parts by mass Vulcanization accelerator E: Magnesium oxide (Kyowa Chemical Industry Co., Ltd. “Kyowa Mag MA-150”) 3.0 parts by mass About each sample of the obtained seal | sticker 1 shown in FIG. 1, it was confirmed visually whether the adhesive layer had peeling or a crack. The results are also shown in Table 2 below.

From this result, as a vulcanized adhesive, an adhesive comprising 5% by mass of a resol type phenol resin, 5% by mass of γ-aminopropyltriethoxysilane, 10% by mass to 45% by mass of ethylene glycol monobutyl ether, and the balance water. By using an agent, compared to the case of using an adhesive consisting of 5% by mass of a resol type phenol resin, 5% by mass of γ-aminopropyltriethoxysilane, 5% by mass of ethylene glycol monobutyl ether, and the remaining water, It can be seen that good adhesion performance can be obtained.
In addition, when an adhesive composed of 5% by mass of a resol type phenolic resin, 5% by mass of γ-aminopropyltriethoxysilane, and the remaining toluene is used as a vulcanized adhesive, good adhesive performance can be obtained. The use of toluene has problems in terms of working environment and environmental pollution.

It is a figure which shows an example of the rolling bearing with a seal | sticker. It is a figure which shows an example of the hub unit for motor vehicles. It is a figure which shows the example of the seal | sticker of the hub unit for motor vehicles. It is a figure which shows the example of the seal | sticker of the hub unit for motor vehicles. It is a figure which shows an example of a water pump. It is a figure which shows an example of the seal | sticker for water pumps. It is a figure which shows an example of the seal | sticker for water pumps.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seal 11 Main part 12 Clamping part 13 Lip part 2 Core metal 3 Rubber member 4 Outer ring 40 Outer ring 41 Stop groove 410 Stop groove 5 Inner ring 51 Receiving groove 51a Sliding surface 61 Outer ring equivalent member 62 Inner ring equivalent member 63 Ball 64 Cage 65 first seal 651 cored bar 652 rubber member 66 second seal 661 cored bar 662 rubber member 67 slinger 7 water pump 71 impeller 72 casing 73 cooling water container 10 seal 20 cored bar 30 rubber member 31 lip part 32 lip part ( Main lip)
33 Lip portion 8 Slinger 81 Small cylindrical portion of slinger 82 Large cylindrical portion of slinger 9 Rubber member 91 Lip portion 100 Seal 150 Caulking portion 200 Core metal 300 Rubber member

Claims (2)

Consists of a cored bar and a rubber member, obtained by integrally molding the rubber member on the cored bar via a vulcanized adhesive,
In a seal that is used by closing a gap between two members that move relative to each other, and having a locking portion that locks to one member, and contacting a lip portion that is a part of the rubber member with the other member,
As the vulcanized adhesive,
It consists of a resol-type phenol resin, an alkylene glycol monoalkyl ether, and water. The content of the resol-type phenol resin is from 1% by mass to 10% by mass, and the content of the alkylene glycol monoalkyl ether is from 10% by mass to 45% by mass. An undercoat adhesive that is
It consists of a novolac type phenol resin, an alkylene glycol monoalkyl ether and water, and the content of the resol type phenol resin is 1% by mass to 10% by mass, and the content of the alkylene glycol monoalkyl ether is 10% by mass to 45% by mass. A seal characterized in that it is obtained using an overcoat adhesive. Consists of a cored bar and a rubber member, obtained by integrally molding the rubber member on the cored bar via a vulcanized adhesive,
In a seal that is used by closing a gap between two members that move relative to each other, and having a locking portion that locks to one member, and contacting a lip portion that is a part of the rubber member with the other member,
As the vulcanized adhesive,
It consists of a resol-type phenol resin, a silane coupling agent, an alkylene glycol monoalkyl ether, and water. The content of the resol-type phenol resin is from 1% by mass to 10% by mass, and the content of the silane coupling agent is 1% by mass. % To 10% by mass and a sealant obtained by using an adhesive having an alkylene glycol monoalkyl ether content of 10% by mass to 45% by mass.

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