JPS5547050A - Cylindrical surface seal - Google Patents

Cylindrical surface seal

Info

Publication number
JPS5547050A
JPS5547050A JP12007478A JP12007478A JPS5547050A JP S5547050 A JPS5547050 A JP S5547050A JP 12007478 A JP12007478 A JP 12007478A JP 12007478 A JP12007478 A JP 12007478A JP S5547050 A JPS5547050 A JP S5547050A
Authority
JP
Japan
Prior art keywords
fluid
grooves
sealing
cylindrical surface
increased
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
Application number
JP12007478A
Other languages
Japanese (ja)
Inventor
Akira Washida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arai Seisakusho Co Ltd
Original Assignee
Arai Seisakusho Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Arai Seisakusho Co Ltd filed Critical Arai Seisakusho Co Ltd
Priority to JP12007478A priority Critical patent/JPS5547050A/en
Publication of JPS5547050A publication Critical patent/JPS5547050A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

PURPOSE: To improve sealing performance of the seal and increase the PV value, by providing a sealing surface including axially inclined grooves disposed on the opposite side of sealing fluid and a cylindrical surface with no grooves located between said grooves and sealing fluid.
CONSTITUTION: Fluid in grooves 9 is forced into a sliding surface formed between grooves 9 and cylindrical surface 10 by reason of wedge function, so that thickness of the fluid film at the portion is increased and the PV value at the portion is resultantly increased. Around the inner circumferential surface of lip 6, thicknes of fluid film at the portion located on the side of grooves is increased by the above-mentioned wedge function. On the other hand, although thickness of fluid film is increased also on the side of cylindrical surface 10 by reason of resiliency of lip 6, thickness of fluid film is decreased gradually toward sealing fluid X since expansion of lip 6 caused by fluid forced thereinto is larger on the side of grooves 9. That is, sealing surface by cylindrical surface 10 forms a conical surface whose clearance is decreased gradually toward sealing fluid X, so that sealing performance of the cylindrical surface seal can be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP12007478A 1978-09-29 1978-09-29 Cylindrical surface seal Pending JPS5547050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12007478A JPS5547050A (en) 1978-09-29 1978-09-29 Cylindrical surface seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12007478A JPS5547050A (en) 1978-09-29 1978-09-29 Cylindrical surface seal

Publications (1)

Publication Number Publication Date
JPS5547050A true JPS5547050A (en) 1980-04-02

Family

ID=14777248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12007478A Pending JPS5547050A (en) 1978-09-29 1978-09-29 Cylindrical surface seal

Country Status (1)

Country Link
JP (1) JPS5547050A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56150670A (en) * 1980-02-07 1981-11-21 Freudenberg Carl Hydrodynamic shaft seal
US4344631A (en) * 1980-11-18 1982-08-17 Mechanical Technology Incorporated Pressure insensitive lip seal
JPS5862048A (en) * 1981-10-09 1983-04-13 東レ株式会社 Polyester film
JPS5862826A (en) * 1981-10-12 1983-04-14 Toray Ind Inc Polyester film for magnetic recording medium
JPS59176043A (en) * 1983-03-26 1984-10-05 ユニチカ株式会社 Laminated film and manufacture thereof
EP0195682A2 (en) * 1985-03-22 1986-09-24 Dowty Seals Limited Seals
US5364684A (en) * 1991-07-10 1994-11-15 Diafoil Hoechst Company, Limited Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer
US9062774B2 (en) 2012-03-21 2015-06-23 Federal-Mogul Corporation Radial shaft seal with static and hydrodynamic sealing features
EP2843269A4 (en) * 2012-04-27 2015-08-05 Nok Corp Sealing device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56150670A (en) * 1980-02-07 1981-11-21 Freudenberg Carl Hydrodynamic shaft seal
JPS6261825B2 (en) * 1980-02-07 1987-12-23 Freudenberg Carl
US4344631A (en) * 1980-11-18 1982-08-17 Mechanical Technology Incorporated Pressure insensitive lip seal
JPS622986B2 (en) * 1981-10-09 1987-01-22 Toray Industries
JPS5862048A (en) * 1981-10-09 1983-04-13 東レ株式会社 Polyester film
JPS5862826A (en) * 1981-10-12 1983-04-14 Toray Ind Inc Polyester film for magnetic recording medium
JPH021005B2 (en) * 1981-10-12 1990-01-10 Toray Industries
JPS59176043A (en) * 1983-03-26 1984-10-05 ユニチカ株式会社 Laminated film and manufacture thereof
JPH0455866B2 (en) * 1983-03-26 1992-09-04 Unitika Ltd
EP0195682A2 (en) * 1985-03-22 1986-09-24 Dowty Seals Limited Seals
US5364684A (en) * 1991-07-10 1994-11-15 Diafoil Hoechst Company, Limited Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer
US9062774B2 (en) 2012-03-21 2015-06-23 Federal-Mogul Corporation Radial shaft seal with static and hydrodynamic sealing features
EP2843269A4 (en) * 2012-04-27 2015-08-05 Nok Corp Sealing device
US9593776B2 (en) 2012-04-27 2017-03-14 Nok Corporation Sealing device
US9644743B2 (en) 2012-04-27 2017-05-09 Nok Corporation Sealing device

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