JPS62228760A - Shaft seal device - Google Patents
Shaft seal deviceInfo
- Publication number
- JPS62228760A JPS62228760A JP7095986A JP7095986A JPS62228760A JP S62228760 A JPS62228760 A JP S62228760A JP 7095986 A JP7095986 A JP 7095986A JP 7095986 A JP7095986 A JP 7095986A JP S62228760 A JPS62228760 A JP S62228760A
- Authority
- JP
- Japan
- Prior art keywords
- seal ring
- lip portion
- oil
- shaft
- labyrinth
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000005484 gravity Effects 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000007769 metal material Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 27
- 210000003027 ear inner Anatomy 0.000 description 15
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は歯車装量のように内部に潤滑油を有する装置の
油洩れ防止のための軸封装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shaft sealing device for preventing oil leakage in a device having lubricating oil inside, such as a gear fitting.
従来の軸封装置として例えば第４図および第５図に示さ
れる。A conventional shaft sealing device is shown in FIGS. 4 and 5, for example.
第４図は従来のラビリンスを使用した軸封装置の一例を
示す縦断面図、第５図はオイルシールを使用した他の一
例を示す縦断面図であり、第４図においては、１は軸、
１２は軸１に嵌着された油切り部１２ａを有する回転体
、１３は回転体１２に対してラビリンスＰを介して設け
られた断面コ字状の蓋、１４は蓋１３をボルトで取着せ
しめるハウジングであり、これらによって軸封装置が構
成されている。Fig. 4 is a vertical sectional view showing an example of a shaft seal device using a conventional labyrinth, and Fig. 5 is a longitudinal sectional view showing another example using an oil seal. ,
12 is a rotating body having an oil cutter 12a fitted to the shaft 1, 13 is a lid having a U-shaped cross section and provided to the rotating body 12 via a labyrinth P, and 14 is a lid 13 attached with bolts. These housings constitute a shaft sealing device.
そして、ラビリンスＰを設けたことによって，内部から
の油洩れを防止している。By providing the labyrinth P, oil leakage from the inside is prevented.
第５図においては、ｌは軸、２２は軸１に嵌着された座
、２３はハウジング２４にボルトで取着された沓、２５
は蓋２３の内側に固着され座２２の外周面を摺動するリ
ップ部２５ａを有する弾性体のオイルシールであり、オ
イルシール２５の９．プ部２５ａと座２２の外周面との
摺動接触によって内部からの油洩れを防止している。In FIG. 5, l is a shaft, 22 is a seat fitted on the shaft 1, 23 is a shoe attached to the housing 24 with bolts, 25
9 is an elastic oil seal that is fixed to the inside of the lid 23 and has a lip portion 25a that slides on the outer peripheral surface of the seat 22; The sliding contact between the tap portion 25a and the outer peripheral surface of the seat 22 prevents oil from leaking from inside.
かくして、従来の軸封装置においては次のような問題点
があった。Thus, the conventional shaft sealing device has the following problems.
まずラビリンスＰを使用した場合においては、常に細隙
を有するので、軸１が高速で回転している場合には油切
り部１２ａの高速回転によるファン効果でラビリンスＰ
の外側と内側の圧力差により油洩れを防止されるが、回
転が低速となるとファン効果が弱くなるのでラビリンス
Ｐの細隙を伝わって油が外部に流出し、若干の油洩れは
避けられない。First, when the labyrinth P is used, there is always a slit, so when the shaft 1 is rotating at high speed, the labyrinth P is
Oil leakage is prevented by the pressure difference between the outside and inside of the P, but as the rotation speed becomes low, the fan effect weakens, so oil flows to the outside through the slits in the labyrinth P, and some oil leakage is unavoidable. .
次にラビリンスＰの代りにオイルシール２５を使用した
場合高速回転から低速まで油洩れは防止出来るが、オイ
ルシール２５のリップ部２５ａが常にある圧力で座２２
の表面と摺動接触しているため、高速回転になると摺動
速度の増大により摩擦発熱し、このためにリップ部２５
ａの摩滅と座２２の摺動部の溝摩耗が発生し、長期間の
使用に耐えることが出来ない欠点があった。Next, if the oil seal 25 is used in place of the labyrinth P, oil leakage can be prevented from high speed to low speed, but the lip portion 25a of the oil seal 25 is always under a certain pressure to the seat 22.
Since the lip portion 25 is in sliding contact with the surface of the
A and groove wear of the sliding portion of the seat 22 occur, which has the disadvantage that it cannot withstand long-term use.
本発明は前述の問題点を解決し、高速、低速に関係なく
油洩れせず、さらに溝摩耗が発生しない両方の問題点を
同時に解決した軸封装置を提供するものである。The present invention solves the above-mentioned problems and provides a shaft sealing device that does not leak oil regardless of whether the speed is high or low, and also does not cause groove wear.
ここに、それらの目的を達成するための手段としては、
低速回転時には通常のオイルシールド同様に摺動接触し
、高速回転時には摺動部に微少な間隙を発生して非接触
の油切りとして作用するように、鉄粉などの金属粉を混
合して比重を増したゴム状弾性体で且つ一方にリップ部
を有するシールリングを設け、このシールリングの外周
面と前記油切り部の内周面との間に若干の間隙を設け且
つ前記リップ部がこのり、プ部と対向する前記蓋と接触
するように前記ラビリンス部の回転体に固着せしめるよ
う構成したものである。Here, as a means to achieve those objectives,
Metal powder such as iron powder is mixed in to reduce the specific gravity so that during low-speed rotation, it slides into contact like a normal oil shield, and during high-speed rotation, a small gap is created in the sliding part to act as a non-contact oil drain. A seal ring is provided, which is made of a rubber-like elastic body with increased hardness and has a lip portion on one side, and a slight gap is provided between the outer circumferential surface of the seal ring and the inner circumferential surface of the oil drain portion, and the lip portion and is configured to be fixed to the rotating body of the labyrinth part so as to be in contact with the lid facing the cap part.
ここで、シールリングのリップ部にコイルばね状の金属
材料を埋め込んでもよく、さらにシールリングのリップ
部を設けた側の外径を、回転体に固着するシールリング
の外径より若干小さくしてもよい。Here, a coil spring-like metal material may be embedded in the lip portion of the seal ring, and the outer diameter of the side where the lip portion of the seal ring is provided is slightly smaller than the outer diameter of the seal ring that is fixed to the rotating body. Good too.
以下１本発明の軸封装置の実施例を、図面に基づいて説
明するとともに、併せて作用も詳述する。Hereinafter, an embodiment of the shaft sealing device of the present invention will be explained based on the drawings, and the operation will also be explained in detail.
第１図は本発明の軸封装置の一実施例を示す縦断面図、
第２図は軸が高速回転したときの軸封装置の作用を説明
するための説明図、第３図はシールリングの他の実施例
を示す斜視図である〇第１図、第２図において、１は軸
、２は軸ｌに嵌着された油切り部２ａを有する回転体、
３は回転体２の油切り部２ａに対してラビリンスＱを介
して設けられた断面コ字状の蓋、４は蓋３を固着するハ
ウジング、５は鉄粉などの金属粉を混合して比重を増し
たゴム状弾性体で且つ一方にリップ部５ｂを有し他方５
ａを油切り部２ａの内側に固着する本発明のシールリン
グである。FIG. 1 is a longitudinal sectional view showing an embodiment of the shaft sealing device of the present invention;
Figure 2 is an explanatory diagram for explaining the action of the shaft sealing device when the shaft rotates at high speed, and Figure 3 is a perspective view showing another embodiment of the seal ring. , 1 is a shaft, 2 is a rotating body having an oil cutter 2a fitted to the shaft l,
Reference numeral 3 indicates a lid having a U-shaped cross section and is provided to the oil drain portion 2a of the rotary body 2 through a labyrinth Q; 4 is a housing for fixing the lid 3; and 5 is a housing with a specific gravity mixed with metal powder such as iron powder. The rubber-like elastic body has a lip portion 5b on one side and a lip portion 5b on the other side.
This is a seal ring of the present invention which fixes the part a to the inside of the oil drain part 2a.
シールリング５の外周面と、回転体２の油切り部２ａの
内周面との間には、若干の間隙ａが設けられ、さらにリ
ップ部５ｂが、このリップ部５ｂと対向する蓋３と接触
するようにラビリンスＱの回転体２に固着されている。A slight gap a is provided between the outer circumferential surface of the seal ring 5 and the inner circumferential surface of the oil cutter 2a of the rotary body 2, and a lip portion 5b is formed between the lid 3 and the lid 3 facing the lip portion 5b. It is fixed to the rotating body 2 of the labyrinth Q so as to be in contact with it.
ここで、シールリング５の形状は、間隙ａが得られるよ
うにシールリング５のリップ部５ｂを設けた側の外径を
、回転体２に固着するシールリング５の外径より若干小
さめとなっているが、同じ外径で間隙δが得られるよう
にシールリング５を回転体２に固着してもよい。Here, the shape of the seal ring 5 is such that the outer diameter of the side where the lip portion 5b of the seal ring 5 is provided is slightly smaller than the outer diameter of the seal ring 5 fixed to the rotating body 2 so that a gap a can be obtained. However, the seal ring 5 may be fixed to the rotating body 2 so that the gap δ is obtained with the same outer diameter.
かくして、かようなものから構成される装置置において
、軸１が低速で回転している場合シールリング５のリッ
プ部５ｂは蓋３のラビリンスＱの外径部３ｂと完全接触
して油洩れを防止している。Thus, in a device constructed of such a device, when the shaft 1 is rotating at a low speed, the lip portion 5b of the seal ring 5 is in complete contact with the outer diameter portion 3b of the labyrinth Q of the lid 3 to prevent oil leakage. It is prevented.
軸１が高速回転になると、シールリング５のリップ部５
ｂは金属粉の混合齋こより比重が大きく且つリップ部５
ｂの外周部は油切り部２ａの内径部２ｂと間隙δをもっ
ているので、回転による遠心力が弾性体を伸ばして第２
図に示す破線の状態に撓み、リップ部５ｂの内径が拡大
する＠
第５図に示す従来のオイルシール２５のリップ部２５ａ
はゴム状物質のみで構成されているので比重が小さく、
自身の遠心力で弾性体の弾性力に打ち勝つことが出来な
いので、回転によってもリップ部２５ａの内径の拡大は
ほとんどない。一方、本発明のシールリング５は弾性体
中に金属粉を混合して比重を太き（しているので、遠心
力により内径が拡大する。この内径拡大量としては、Ｑ
、２ｍｍ程度もあれば十分である。When the shaft 1 rotates at high speed, the lip portion 5 of the seal ring 5
b has a higher specific gravity than the metal powder mixture and has a lip portion 5.
Since the outer circumferential part of b has a gap δ with the inner diameter part 2b of the oil drain part 2a, the centrifugal force due to rotation stretches the elastic body and the second
The lip portion 25a of the conventional oil seal 25 shown in FIG.
Since it is composed only of rubber-like substances, its specific gravity is small;
Since the elastic force of the elastic body cannot be overcome by its own centrifugal force, the inner diameter of the lip portion 25a hardly increases due to rotation. On the other hand, the seal ring 5 of the present invention has a thicker specific gravity by mixing metal powder into the elastic body, so the inner diameter expands due to centrifugal force.The amount of inner diameter expansion is Q
, about 2 mm is sufficient.
さらに、遠心力によりリップ部５ｂの内径が拡大すると
、蓋３のラビリンス部の外径部３ｂとの間に微小な間隙
が発生して非接触状態となる。Furthermore, when the inner diameter of the lip portion 5b expands due to centrifugal force, a minute gap is generated between the lip portion 5b and the outer diameter portion 3b of the labyrinth portion of the lid 3, resulting in a non-contact state.
従って、高速回転時ζこはり、プ部５ｂの摺動がなくな
るのでリップ部５ｂの摩滅あるいは蓋３のラビリンス部
の外径部３ｂの溝摩耗も発生することなく、長期間安定
した状態で油洩れ防止効果を発揮することができる。Therefore, during high-speed rotation, there is no ζ stiffness or sliding of the lip part 5b, so there is no wear of the lip part 5b or wear of the groove on the outer diameter part 3b of the labyrinth part of the lid 3, and the oil remains stable for a long period of time. It can exhibit leakage prevention effect.
次に第３図において、６はシールリング７のリップ部７
ａに埋め込んだコイルばね状の金属材料であり、リップ
部７ａの比重を一層増加せしめて、前述したごとくリッ
プ部の内径をさらに拡大させることができる。Next, in FIG. 3, 6 is the lip portion 7 of the seal ring 7.
It is a coiled spring-like metal material embedded in the lip portion 7a, and can further increase the specific gravity of the lip portion 7a and further expand the inner diameter of the lip portion as described above.
ここで、リップ部に混合する金属粉の割合あるいはコイ
ルばね状金属コイルの密度を調整することにより、リッ
プ部の内径拡大量を決定することも可能である。Here, it is also possible to determine the amount of increase in the inner diameter of the lip portion by adjusting the proportion of metal powder mixed in the lip portion or the density of the coiled spring-like metal coil.
以上説明したごとく本発明によれば、低速回転から高速
回転まで油洩れがなく、且つリップ部５ｂ 、 ７ａの
摩滅および蓋３の摺動部の溝摩耗がほとんど発生しない
。As explained above, according to the present invention, there is no oil leakage from low speed rotation to high speed rotation, and wear of the lip portions 5b and 7a and wear of the groove on the sliding portion of the lid 3 hardly occur.
よって、本発明の軸封装置は実用上極めて有用なもので
ある。Therefore, the shaft sealing device of the present invention is extremely useful in practice.
第１図は本発明の軸封装置の一実施例を示す縦断面図、
第２図は軸が高速回転したときの軸封装置の作用を説明
するための説明図、第３図はシールリングの他の実施例
を示す斜視図、第４図は従来のラビリンスを使用した軸
封装置の一例を示す縦断面図、第５図はオイルシールを
使用した他の一例を示す縦断面図である。
１・・・・・・軸、２，１２・・・・・・油切り部２ａ
、 １２ａを有する回転体、３，１３・・・・・・ラ
ビリンスＱ、Ｐを介して設けられた蓋、４，１４・・・
・・・ハウジング、５，７・・・・・・シールリング、
６・・・・・・金属材料。FIG. 1 is a longitudinal sectional view showing an embodiment of the shaft sealing device of the present invention;
Fig. 2 is an explanatory diagram to explain the action of the shaft sealing device when the shaft rotates at high speed, Fig. 3 is a perspective view showing another embodiment of the seal ring, and Fig. 4 is a diagram showing a seal ring using a conventional labyrinth. FIG. 5 is a longitudinal sectional view showing an example of a shaft seal device, and FIG. 5 is a longitudinal sectional view showing another example using an oil seal. 1...shaft, 2, 12... oil drain section 2a
, a rotating body having 12a, 3, 13...... a lid provided via labyrinths Q, P, 4, 14...
...housing, 5,7... seal ring,
6...Metal material.
Claims (3)
と、該回転体に対してラビリンスを介して設けられた蓋
と、該蓋を固着せしめるハウジングなどから構成される
軸封装置において、鉄粉などの金属粉を混合して比重を
増したゴム状弾性体で且つ一方にリップ部を有するシー
ルリングを設け、該シールリングの外周面と前記油切り
部の内周面との間に若干の間隙を設け且つ前記リップ部
が該リップ部と対向する前記蓋と接触するように前記ラ
ビリンス部の回転体に固着せしめるよう構成したことを
特徴とする軸封装置。(1) A shaft consisting of a shaft, a rotating body having an oil cutter fitted to the shaft, a lid provided to the rotating body via a labyrinth, and a housing to which the lid is fixed. In the sealing device, a seal ring is provided which is made of a rubber-like elastic body whose specific gravity is increased by mixing metal powder such as iron powder and has a lip portion on one side, and the outer circumferential surface of the seal ring and the inner circumferential surface of the oil drain portion are provided. A shaft sealing device characterized in that the lip portion is fixed to the rotating body of the labyrinth portion such that a slight gap is provided between the lip portion and the lid facing the lip portion.
属材料を埋込んだことを特徴とする特許請求の範囲第１
項記載の軸封装置。(2) Claim 1, characterized in that a coiled spring-like metal material is embedded in the lip portion of the seal ring.
Shaft sealing device as described in section.
、回転体に固着するシールリングの外径より若干小さく
することを特徴とする特許請求の範囲第１項および第２
項記載の軸封装置。(3) The outer diameter of the seal ring on the side where the lip portion is provided is slightly smaller than the outer diameter of the seal ring that is fixed to the rotating body.
Shaft sealing device as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7095986A JPS62228760A (en) | 1986-03-31 | 1986-03-31 | Shaft seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7095986A JPS62228760A (en) | 1986-03-31 | 1986-03-31 | Shaft seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62228760A true JPS62228760A (en) | 1987-10-07 |
Family
ID=13446564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7095986A Pending JPS62228760A (en) | 1986-03-31 | 1986-03-31 | Shaft seal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62228760A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04236860A (en) * | 1990-12-05 | 1992-08-25 | Inpro Co Inc | Device and method for sealing shaft |
| DE10004265A1 (en) * | 2000-02-01 | 2001-08-09 | Lenze Gmbh & Co Kg Aerzen | Sealing system between a shaft and a fixed housing part |
| WO2002044596A1 (en) * | 2000-11-28 | 2002-06-06 | Federal-Mogul Technology Limited | Static sealing arrangement |
| JP2007195307A (en) * | 2006-01-18 | 2007-08-02 | Hitachi Industrial Equipment Systems Co Ltd | Water sealing submersible motor |
| EP2054293A1 (en) * | 2006-07-19 | 2009-05-06 | Ab Skf | Bearing arrangement for a bicycle |
| WO2011060154A3 (en) * | 2009-11-11 | 2011-10-27 | Garlock Sealing Technologies, Llc | Flooded bearing isolator |
| CN104500747A (en) * | 2014-11-21 | 2015-04-08 | 广西智通节能环保科技有限公司 | Silica gel filling U-shaped spring seal ring |
| CN110886844A (en) * | 2018-09-10 | 2020-03-17 | 布鲁斯密封系统有限公司 | Shaft seal with shaft seal ring |
| US10704692B1 (en) | 2017-04-26 | 2020-07-07 | Garlock Sealing Technologies, Llc | Flooded metallic bearing isolator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4518Y1 (en) * | 1965-03-24 | 1970-01-06 |
-
1986
- 1986-03-31 JP JP7095986A patent/JPS62228760A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4518Y1 (en) * | 1965-03-24 | 1970-01-06 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04236860A (en) * | 1990-12-05 | 1992-08-25 | Inpro Co Inc | Device and method for sealing shaft |
| DE10004265A1 (en) * | 2000-02-01 | 2001-08-09 | Lenze Gmbh & Co Kg Aerzen | Sealing system between a shaft and a fixed housing part |
| EP1122472A3 (en) * | 2000-02-01 | 2005-01-05 | Lenze Drive Systems GmbH | Sealing between a rotating shaft and a stationary housing |
| WO2002044596A1 (en) * | 2000-11-28 | 2002-06-06 | Federal-Mogul Technology Limited | Static sealing arrangement |
| JP2007195307A (en) * | 2006-01-18 | 2007-08-02 | Hitachi Industrial Equipment Systems Co Ltd | Water sealing submersible motor |
| EP2054293A1 (en) * | 2006-07-19 | 2009-05-06 | Ab Skf | Bearing arrangement for a bicycle |
| WO2011060154A3 (en) * | 2009-11-11 | 2011-10-27 | Garlock Sealing Technologies, Llc | Flooded bearing isolator |
| US8820749B2 (en) | 2009-11-11 | 2014-09-02 | Garlock Sealing Technologies, Llc | Flooded bearing isolator |
| CN104500747A (en) * | 2014-11-21 | 2015-04-08 | 广西智通节能环保科技有限公司 | Silica gel filling U-shaped spring seal ring |
| US10704692B1 (en) | 2017-04-26 | 2020-07-07 | Garlock Sealing Technologies, Llc | Flooded metallic bearing isolator |
| US11365810B1 (en) | 2017-04-26 | 2022-06-21 | Garlock Sealing Technologies, Llc | Flooded metallic bearing isolator |
| CN110886844A (en) * | 2018-09-10 | 2020-03-17 | 布鲁斯密封系统有限公司 | Shaft seal with shaft seal ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3923315A (en) | Fluid seal | |
| US5967524A (en) | Hybrid seal device | |
| US4336945A (en) | Sinuous seal with auxiliary excluder lips | |
| US5022659A (en) | Seal assembly for antifriction bearings | |
| DE3062489D1 (en) | Rotary seal unit | |
| GB2137702A (en) | Combination wear sleeve and excluder lip adapted for easy installation | |
| US4592666A (en) | Sealing device for sealing a bearing | |
| US3049356A (en) | Shaft oil seal means with deflector | |
| JPS62228760A (en) | Shaft seal device | |
| US4474379A (en) | Centrifugally-operated radially-translatable seal ring | |
| JP2000110946A (en) | Hermetic sealing device | |
| CA2102472A1 (en) | Seal Arrangement | |
| CA2074446C (en) | Cassette seal | |
| WO1995005699A1 (en) | Shaft sealing device for an electric motor | |
| JP2605197Y2 (en) | Sealing device | |
| HU192268B (en) | Antifriction bearing provided with packing | |
| JPH06201049A (en) | Oil seal sealing high-speed shaft | |
| US4208058A (en) | Shaft seal | |
| US6612583B2 (en) | Bearing seal | |
| JP2983419B2 (en) | Rotary body seal | |
| JP4649811B2 (en) | Sealing device | |
| US4212477A (en) | Circumferential shaft seal | |
| US6302403B1 (en) | Sealing assembly for two mechanical members connected for relative rotation, in particular for two rings of a rolling bearing | |
| JPH0744860Y2 (en) | Sealing device | |
| US4418920A (en) | Fluid seal for engine crankshaft applications |