CN207554678U - Sealing device - Google Patents
Sealing device Download PDFInfo
- Publication number
- CN207554678U CN207554678U CN201721555539.9U CN201721555539U CN207554678U CN 207554678 U CN207554678 U CN 207554678U CN 201721555539 U CN201721555539 U CN 201721555539U CN 207554678 U CN207554678 U CN 207554678U
- Authority
- CN
- China
- Prior art keywords
- lip
- axis
- dustproof lip
- sealing device
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a kind of sealing device, and can improve prevents from external allotrylic performance and be able to maintain that the performance.Sealing device (1) includes：Cyclic annular substrate (10) is around axis (x) component hollow disc shape, being formed by metal material annular in shape；And elastomer portions (20), cyclic annular substrate is installed on, is formed by elastic material, and around axis (x) annularly, elastomer portions include：Cricoid sealed lip (21) extends, and slideably contacted with axis towards the side in axis (x) direction；And cricoid dirt lip (22), its extension of opposite side towards axis (x) direction, and it is slideably contacted with axis, dirt lip includes main dustproof lip (23) and the secondary dustproof lip (24) compared with main dustproof lip on axis (x) direction closer to above-mentioned side, and dirt lip has the annular recessed portion (25) being recessed to outer peripheral side between main dustproof lip and secondary dustproof lip.
Description
Technical field
The utility model is related to sealing device more particularly in the dress for making attenuator of vibration attenuation etc. that there is working fluid
The sealing device of seal operation liquid is used in putting.
Background technology
All the time, sealing device is used in the device that there is working fluid in damper etc..Fig. 3, which is used to indicate that, to be used for
The partial cross-sectional view of the schematic structure of the existing sealing device 100 of damper.As shown in figure 3, existing sealing device 100
Including：Cyclic annular substrate 101 is cricoid metal hollow disc；And cricoid elastomer portions 102, it is installed on the ring
It shape substrate 101 and is formed by elastic material.Sealing device 100 is installed on the opening of the cylinder of damper (not shown), and realization is opened
Sealing between mouth and piston rod 110.
From cyclic annular substrate 101, internally side extends the main lip 103 of elastomer portions 102, by garter spring 104 to piston
Bar 110 applies pressing force, so as to prevent from being stored in the fluid of the inside of damper to external leakage.Elastomer portions 102 it is dust-proof
Lip 105 extends from cyclic annular substrate 101 to outer side, piston rod 110 is pressed by garter spring 106, so as to prevent
It is internal from the foreign matters intrusion such as external muddy water and rainwater, dust.
In addition, in a state that sealing device 100 is installed, by main lip 103, dirt lip 105 and piston rod 110
Lubricating grease is maintained in the space of formation, so as to maintain the lubrication between dirt lip 105 and piston rod 110.
Utility model content
The utility model subject to be solved
As described above, in existing sealing device 100, prevented by dirt lip 105 from external dust etc.
Foreign matter intrusion is internal.But since in recent years, the diversification of the use environments such as vehicle, sealing device can be more pre- than previous sometimes
Foreign matter is exposed under the severeer use environment of the state thought.Therefore, seek it is a kind of relative to existing sealing device 100, more
It can inhibit the structure of the intrusion from external foreign matter.
In addition, in existing sealing device 100, sometimes by 110 shape of main lip 103, dirt lip 105 and piston rod
Into space in cannot keep the lubricating grease of sufficient amount, and sometimes due to the abrasion of dirt lip 105, piston rod 110 with it is anti-
Gap is formed between dirt lip 105, foreign matter is caused to invade.
In this way, seeking relative to existing sealing device 100, can improve prevents from external allotrylic property
Can, and it is able to maintain that the structure of the performance.
The utility model in view of the above subject and propose, prevented it is intended that providing and can improve from external different
The performance of object intrusion and the sealing device for being able to maintain that the performance.
Means for solving the problems
In order to achieve the above object, the sealing device involved by the utility model is close for being carried out between cylinder and axis
The sealing device of envelope, the axis are disposed in the inner circumferential side of the cylinder in a manner of it can be relatively moved relative to the cylinder,
It is characterized in that, the sealing device includes：Cyclic annular substrate is by metal material shape around axis hollow disc shape annular in shape
Into component；And elastomer portions, the cyclic annular substrate is installed on, is formed by elastic material, and annular in shape around the axis,
The elastomer portions include：Cricoid sealed lip extends to the side of the axis direction, and with can be relative to described
The mode that axis slides is contacted with the axis；And cricoid dirt lip, extend to the opposite side of the axis direction, and with
It can be contacted relative to the mode that the axis slides with the axis, the dirt lip has：Main dustproof lip；It is and secondary dust-proof
Lip, than the main dustproof lip closer to the side on the axis direction.The dirt lip the main dustproof lip with
There is the cricoid recess portion being recessed to outer peripheral side between the pair dustproof lip.
In the sealing device involved by a scheme in the utility model, the recess portion is recessed to the side.
In the sealing device involved by a scheme in the utility model, in the dirt lip, the pair dustproof lip
Towards opposite side by inner circumferential side it is inclined in a manner of extend, the main dustproof lip is from the side of the peripheral side of the secondary dustproof lip
End is detached with the secondary dustproof lip, and towards opposite side by inner circumferential side it is inclined in a manner of extend.
In the sealing device involved by a scheme in the utility model, the main dustproof lip is on the axis direction
It is longer than the secondary dustproof lip.
In the sealing device involved by a scheme in the utility model, the internal diameter of the fore-end of the main dustproof lip
Internal diameter than the fore-end of the secondary dustproof lip is small.
In the sealing device involved by a scheme in the utility model, the inner peripheral surface of the main dustproof lip has outward
The curved surface of side recess.
In the sealing device involved by a scheme in the utility model, the dirt lip is in the main dustproof lip
There is spring member towards the face of peripheral side, the spring member presses the main dustproof lip to the axis.
The effect of utility model
Sealing device according to involved by the utility model, can improve prevents from external allotrylic performance,
And it is able to maintain that the performance.
Description of the drawings
Fig. 1 is along the sectional view in the section of axis, for representing the sealing dress involved by the embodiment of the utility model
The schematic structure put.
Fig. 2 is along the close-up sectional view of the damper in the section of axis, for illustrating the embodiment party of the utility model
Sealing device involved by formula is installed on the use state of damper.
Fig. 3 is used to indicate that the partial cross-sectional view of the schematic structure of the existing sealing device for damper.
Specific embodiment
Hereinafter, the embodiment of the utility model is described in detail with reference to the attached drawings.
Fig. 1 is along the sectional view in the section (hreinafter referred to as section) of axis x, for representing the reality of the utility model
Apply the schematic structure of the sealing device 1 involved by mode.Sealing device 1 involved by present embodiment is for cylinder
Be disposed in the axis of the inner circumferential side of the cylinder in a manner of it can be relatively moved relative to cylinder between the sealing device that is sealed,
As described later, the damper of the suspension such as vehicle.
Hereinafter, in the accompanying drawings using symbol A sides as outside, using symbol B sides as inside.Outside refers to towards damper
The side of outer side, inside refer to towards the side of the private side of damper.In addition, the direction orthogonal with axis x (hereinafter,
On referred to as radially), using towards the direction of axis x, as inner circumferential side (direction of the arrow a of Fig. 1), the direction that will be far from axis x is made
For peripheral side (direction of the arrow b of Fig. 1).
As shown in Figure 1, the sealing device 1 involved by the embodiment of the utility model includes：Cyclic annular substrate 10, be around
The component formed by metal material of hollow disc shape annular in shape axis x；And elastomer portions 20, it is installed on cyclic annular substrate
10, it is formed by elastic material, and annular in shape around axis x.
Elastomer portions 20 have：Cricoid sealed lip 21, to the inside (arrow of Fig. 1 of the side as axis x directions
Head B sides) extension, and can slidably be contacted with the piston rod 5 as aftermentioned axis；And cricoid dirt lip 22, to
Outside (the arrow A sides of Fig. 1) extension of opposite side as axis x directions, and can slidably be contacted with piston rod 5.
Dirt lip 22 has：Main dustproof lip 23；And secondary dustproof lip 24, than main dustproof lip 23 on axis x directions
Closer to inside.Between main dustproof lip 23 and secondary dustproof lip 24, dirt lip 22 has to outer peripheral side (the arrow b sides of Fig. 1)
The cricoid recess portion 25 of recess.Recess portion 25 is recessed inwardly.
In dirt lip 22, secondary dustproof lip 24 be specifically directed towards outside by inner circumferential side it is inclined in a manner of extend,
Main dustproof lip 23 is specifically from the end of the inside of the peripheral side of secondary dustproof lip 24, that is, medial end 24d and secondary dustproof lip 24
Separation, and towards outside by inner circumferential side it is inclined in a manner of extend.
Main dustproof lip 23 is longer than secondary dustproof lip 24 on axis x directions.In addition, the end in the outside of main dustproof lip 23 is (i.e.
Fore-end 23c) internal diameter Rm it is smaller than the internal diameter Rs of the end (i.e. fore-end 24c) in the outside of secondary dustproof lip 24.Main anti-
The face towards peripheral side, that is, peripheral surface 23b of dirt lip 23, dirt lip 22 have the garter spring 26 as spring member, clamping
Spring 26 presses main dustproof lip 23 to aftermentioned piston rod 5.
As shown in Figure 1, elastomer portions 20 have lip waist 27, it is cricoid part, in embedded cyclic annular substrate 10
The mode of the end (inner peripheral side end portion 11) of side is installed on cyclic annular substrate 10.Sealed lip 21 prolongs inwardly from lip waist 27
It stretches, dirt lip 22 extends outward from lip waist 27.
Specifically, as shown in Figure 1, main dustproof lip 23 from the end of the outside of lip waist 27 and peripheral side outward with
And inner circumferential side obliquely extends, and is presented on axis x directions with towards outside and undergauge and centered on axis x or substantially
The shape of the substantially cone tube shape at center.For example, the face towards inner circumferential side, that is, inner peripheral surface 23a of main dustproof lip 23 has to periphery
The curved surface of side recess.In addition, as shown in Figure 1, the shape in the section of the fore-end 23c of main dustproof lip 23 is in be protruded to axis x
Shape.In aftermentioned use state, the internal diameter Rm of the fore-end 23c of main dustproof lip 23 is set as relative to piston rod 5
Outer diameter D and with given interference volume Wm (Wm=(D-Rm)/2), so as to main dustproof lip 23 be formed as fore-end 23c with
Uniform face pressure is contacted with the entire peripheral surface 5a of piston rod 5.Main dustproof lip 23 can also be in centered on axis x or substantially in
The shape of the cone tube shape of the heart.In addition, the inner peripheral surface 23a of main dustproof lip 23 may not be the curved surface being recessed to outer peripheral side, example
Such as, can be the face of the description straight line on section.
Specifically, as shown in Figure 1, secondary dustproof lip 24 is abutted with main dustproof lip 23, from the outside of lip waist 27 and interior
The end of side is outward and inner circumferential side obliquely extends, and present on axis x directions with towards outside and undergauge simultaneously
Centered on axis x or the cone tube shape of approximate centre or the substantially shape of cone tube shape.As shown in Figure 1, secondary dustproof lip 24
The section of fore-end 24c is in the shape to wedge shape convex axis x.In aftermentioned use state, the front end of secondary dustproof lip 24
The internal diameter Rs of part 24c is set as having given interference volume Ws (Ws=(D-Rs)/2) relative to the outer diameter D of piston rod 5,
Secondary dustproof lip 24 is formed as fore-end 24c and is contacted with uniform face pressure with the entire peripheral surface 5a of piston rod 5.
In aftermentioned use state, the fore-end of main dustproof lip 23 and the secondary formation of dustproof lip 24 for main dustproof lip 23
The interference volume Wm of 23c is more than the interference volume Ws of the fore-end 24c of secondary dustproof lip 24.Main dustproof lip 23 compares on axis x directions
Secondary dustproof lip 24 extends to outside longerly, as shown in Figure 1, compared with the fore-end 24c of secondary dustproof lip 24, main dustproof lip 23
Fore-end 23c more be located at outside.In addition, as shown in Figure 1, main dustproof lip 23 is than secondary 24 wall thickness of dustproof lip.
As shown in Figure 1, recess portion 25 is by the inner peripheral surface 23a of main dustproof lip 23 and the face towards peripheral side of secondary dustproof lip 24
Peripheral surface 24a is defined, and bottom, that is, inner end part 25a of recess portion 25 is consistent with the medial end 24d of secondary dustproof lip 24.Recess portion 25
It is formed around space annular in shape axis x.Specifically, as shown in Figure 1, recess portion 25 to outer peripheral side convex curvature extend, and formed
To be interior positioned at the part of the inside of recess portion 25 compared with positioned at the part in the outside of secondary dustproof lip 24, that is, outboard end part 24b
Side part 25a is more located inside.Lubricating grease can be applied in recess portion 25.
In the peripheral surface 23b of main dustproof lip 23, be formed with slot 28, with the fore-end 23c of main dustproof lip 23 backwards
Position near and it is annular in shape around axis x.Garter spring 26 is embedded in the slot 28.Garter spring 26 radially will be main dust-proof
Lip 23 is pressed to inner circumferential side, and main dustproof lip 23 is pressed relative to piston rod 5 in a state of use.
Sealed lip 21 presents well known shape, for example, as shown in Figure 1, being the wedge that is protruded to inner circumferential side with section
The cricoid lip front end 21a of shape.Sealed lip 21 can also have prominent to inner circumferential side in the more lateral of lip front end 21a
Cricoid pair lip front end 21b.In the peripheral surface of sealed lip 21, in the part with lip front end 21a backwards, clamping is installed
Spring applies pressing force to sealed lip 21, assigns the trackability relative to piston rod 5 in a state of use.In addition, such as Fig. 1
Shown, elastomer portions 20 have cricoid gasket portion 29 in the face of the inside of cyclic annular substrate 10.Gasket portion 29 is using shape
It contacts with mounting object under state, is sealed inside relative to outside.
As shown in Figure 1, in the elastomer portions 20 of sealing device 1, sealed lip 21, dirt lip 22 and lip waist 27
It is combined as a whole by identical elastic material and is formed.As the elastic material of elastomer portions 20, such as there is nitrile rubber
(NBR), the synthetic rubber such as hydrogenated nitrile-butadiene rubber (H-NBR), acrylic rubber (ACM), fluorubber (FKM).In addition, as ring
The metal material of shape substrate 10, such as have the cold-rolled steels such as the hot-rolled steels such as SAPH440 and SPCC.Cyclic annular substrate 10 for example passes through punching press
Processing is forged and is molded, and elastomer portions 20 are molded with type using molding die by being crosslinked (vulcanization).It is cross-linked into carrying out this
During type, cyclic annular substrate 10 is configured in a mold, and elastomer portions 20 are be bonded with cyclic annular substrate 10 by being crosslinked bonding, thus with ring-type
Substrate 10 is integrally formed.
Then, to having the function of that the sealing device 1 of above structure illustrates.
Fig. 2 is along the close-up sectional view of the damper in the section of axis x, for illustrating that above-mentioned sealing device 1 is pacified
Use state loaded on damper.Damper includes：Cylinder (not shown) is around axis x and cylinder annular in shape；It is and living
Stopper rod 5 can reciprocatingly be disposed in the inner circumferential side of the cylinder along axis x.In addition, the structure of damper is existing public affairs
The structure known, thus omit detailed description.
It is main compared to the fore-end 24c of secondary dustproof lip 24 in the case where sealing device 1 is installed on the use state of damper
The fore-end 23c of dustproof lip 23 is more located at outside.In addition, main dustproof lip 23 is based on above-mentioned interference volume Wm and garter spring 26
Pressing force and be pressed into piston rod 5, and contact with the peripheral surface 5a of piston rod 5.Secondary dustproof lip 24 is based on above-mentioned interference volume
Ws and be pressed into piston rod 5, and contact with the peripheral surface 5a of piston rod 5.As a result, dirt lip 22 Liang Chu (that is, master it is dust-proof
Lip 23 and secondary dustproof lip 24) contacted with piston rod 5, so as to prevent the muddy water of the outside from damper and rainwater,
The intrusion of the foreign matters such as dust internally.
In addition, it in a state of use, is filled in recess portion 25 and maintains lubricating grease.As described above, recess portion 25 is to periphery
Side convex curvature extension, compared with open side, bottom side (inner end part 25a) is more located on the outer side.Therefore, it is possible to make lubrication
Fat is trapped in recess portion 25, and can be to the contact zone of the peripheral surface 5a of the fore-end 23c and piston rod 5 of main dustproof lip 23
In domain and the fore-end 24c of secondary dustproof lip 24 and the two regions of the contact area of peripheral surface 5a of piston rod 5 constantly
Supply lubricating grease.In this way, the insufficient state due to that can avoid lubricating grease in a state of use, can inhibit along with work
The reciprocating movement of stopper rod 5 and the abrasion of the main dustproof lip 23 brought and secondary dustproof lip 24, prevent caused by the abrasion, come
From the intrusion of the foreign matter of the outside of damper internally.
In addition, in a state of use, main dustproof lip 23 is longer than secondary dustproof lip 24 on axis x directions, main dustproof lip 23 compares
Secondary 24 wall thickness of dustproof lip, and the interference volume Wm of the fore-end 23c of main dustproof lip 23 is than the fore-end 24c of secondary dustproof lip 24
Interference volume Ws it is big.In this way, main dustproof lip 23 is higher than the trackability of secondary dustproof lip 24 to the eccentric trackability of piston rod 5.Separately
On the one hand, secondary dustproof lip 24 is more soft than main dustproof lip 23, it is suppressed that the increase of resistance to sliding.In this way, by main dustproof lip 23, it is close
Seal apparatus 1 will be improved relative to the eccentric sealing performance of piston rod 5, it is therefore prevented that when damper works from outside
Foreign matter internally invades.
In this way, in above-mentioned sealing device 1, dirt lip 22 is in Liang Chu (that is, main dustproof lip 23 and secondary dustproof lip 24)
It is contacted with piston rod 5, so as to improve the performance for preventing the intrusion from external foreign matter.In addition, it is filled in above-mentioned sealing
In putting 1, lubricating grease can be made to be trapped in recess portion 25, and lubricating grease can be continually provided from recess portion 25, it is dust-proof so as to reduce master
The abrasion of lip 23 and secondary dustproof lip 24.In addition, by main dustproof lip 23 relative to the eccentric high trackability of piston rod 5, energy
Enough improve is prevented when damper works from external allotrylic performance.
As described above, by the sealing device 1 involved by the embodiment of the utility model, can improve prevents from outer
The allotrylic performance in portion, and it is able to maintain that the performance.
More than, the embodiment of the utility model is illustrated, but to be not limited to above-mentioned practicality new for the utility model
Sealing device 1 involved by the embodiment of type, design and utility model right claim institute including the utility model
All schemes covered.In addition, in order to reach at least part of the above subject and effect, can also properly select and group
Close each structure.For example, can by it is according to the present utility model it is specifically used in a manner of, to required for each structure in the above embodiment
Shape, material, configuration, size etc. suitably changed.
In addition, the sealing device 1 involved by present embodiment is not limited to use in above-mentioned damper, the utility model can fit
All structures for the effect played using the utility model.
Label declaration
1st, 100 sealing device；10th, 101 cyclic annular substrate；11 inner peripheral side end portions；20th, 102 elastomer portions；21 sealed lips；
21a lip front ends；21b pair lip front ends；22nd, 105 dirt lip；23 main dustproof lips；23a inner peripheral surfaces；23b, 24a, 5a periphery
Face；23c, 24c fore-end；24 secondary dustproof lips；24b outboard ends part；24d medial ends；25 recess portions；25a inner ends part；
26 garter springs；27 lip waists；28 slots；29 gasket portions；103 main lips；104th, 106 garter spring；5th, 110 piston rod；Outside A
Side；On the inside of B；A inner circumferential sides；B peripheral sides；D outer diameters；Rm, Rs internal diameter；Wm, Ws interference volume；X-axis.
Claims (7)
1. a kind of sealing device, for being sealed between cylinder and axis, the axis is with can be opposite relative to the cylinder
Mobile mode is disposed in the inner circumferential side of the cylinder, which is characterized in that the sealing device includes：
Cyclic annular substrate is around axis component hollow disc shape, being formed by metal material annular in shape；And
Elastomer portions are installed on the cyclic annular substrate, are formed by elastic material, and annular in shape around the axis,
The elastomer portions have：Cricoid sealed lip extends to the side of the axis direction, and with can be relative to
The mode that the axis slides is contacted with the axis；And cricoid dirt lip, extend to the opposite side of the axis direction,
And contacted in a manner of it can be slided relative to the axis with the axis,
The dirt lip has：Main dustproof lip；And secondary dustproof lip, it is more leaned on the axis direction than the main dustproof lip
The nearly side,
The dirt lip has the annular recessed portion being recessed to outer peripheral side between the main dustproof lip and the secondary dustproof lip.
2. sealing device according to claim 1, which is characterized in that
The recess portion is recessed to the side.
3. sealing device according to claim 1, which is characterized in that
In the dirt lip, it is described pair dustproof lip towards opposite side by inner circumferential side it is inclined in a manner of extend, the master prevents
Dirt lip is detached from the end of the side of the peripheral side of the secondary dustproof lip with the pair dustproof lip, and towards opposite side with to inner circumferential
The inclined mode in side extends.
4. sealing device according to claim 1, which is characterized in that
The main dustproof lip is longer than the secondary dustproof lip on the axis direction.
5. sealing device according to claim 1, which is characterized in that
The internal diameter of the fore-end of the main dustproof lip is smaller than the internal diameter of the fore-end of the secondary dustproof lip.
6. sealing device according to claim 1, which is characterized in that
The inner peripheral surface of the main dustproof lip has the curved surface being recessed to outer peripheral side.
7. sealing device according to claim 1, which is characterized in that
The dirt lip has spring member in the face towards peripheral side of the main dustproof lip, and the spring member is to described
Axis presses the main dustproof lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555539.9U CN207554678U (en) | 2017-11-20 | 2017-11-20 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555539.9U CN207554678U (en) | 2017-11-20 | 2017-11-20 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554678U true CN207554678U (en) | 2018-06-29 |
Family
ID=62680348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721555539.9U Active CN207554678U (en) | 2017-11-20 | 2017-11-20 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113474568A (en) * | 2019-05-08 | 2021-10-01 | Nok株式会社 | Sealing device |
-
2017
- 2017-11-20 CN CN201721555539.9U patent/CN207554678U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113474568A (en) * | 2019-05-08 | 2021-10-01 | Nok株式会社 | Sealing device |
| CN113474568B (en) * | 2019-05-08 | 2024-01-05 | Nok株式会社 | Sealing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104040195B (en) | Ball-and-socket joint dust cover | |
| KR20060130761A (en) | Sealing device for reciprocating shaft | |
| JP6518064B2 (en) | Sliding seal structure | |
| JP2011231843A (en) | Seal chain | |
| CN108474479A (en) | Sealing device | |
| CN205654870U (en) | Sealing device | |
| CN207554678U (en) | Sealing device | |
| JP5892312B2 (en) | Sealing device | |
| JP2007278459A (en) | Oil seal | |
| JP2010242874A (en) | Sealing device for reciprocating motion | |
| CN208123444U (en) | Dust seal | |
| WO2017118278A1 (en) | Dust-prevention seal assembly for preventing fluid from leaking from seal groove opening of outer ring, and bearing | |
| KR20130139110A (en) | Rod cover for hydraulic cylinder | |
| JP2009180252A (en) | Shaft seal | |
| CN205001482U (en) | Sealing device | |
| JP2016001024A (en) | Seal device | |
| CN206582329U (en) | Sealing device | |
| CN210661361U (en) | Y-shaped combined sealing device with anti-compression ring and tooth-shaped lip | |
| CN205841759U (en) | Sealing device | |
| US20200278028A1 (en) | Sealing apparatus | |
| JP2018076903A (en) | Sealing device | |
| CN202149221U (en) | Axial oil seal | |
| US10473219B2 (en) | Sealing structure | |
| JP2012137121A (en) | Sealing device | |
| JP5702676B2 (en) | Oil seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |