JPS56150662A - Oil seal - Google Patents

Oil seal

Info

Publication number
JPS56150662A
JPS56150662A JP5403480A JP5403480A JPS56150662A JP S56150662 A JPS56150662 A JP S56150662A JP 5403480 A JP5403480 A JP 5403480A JP 5403480 A JP5403480 A JP 5403480A JP S56150662 A JPS56150662 A JP S56150662A
Authority
JP
Japan
Prior art keywords
spiral groove
metal mold
seal
sliding seal
fine
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
JP5403480A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP5403480A priority Critical patent/JPS56150662A/en
Publication of JPS56150662A publication Critical patent/JPS56150662A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sealing With Elastic Sealing Lips (AREA)

Abstract

PURPOSE: To produce the oil seal with high sealing capability and small friction torque by a method wherein a fine spiral groove is provided at the part forming a sliding seal surface and at the surface in its vicinity in a metal mold.
CONSTITUTION: The spiral groove 9 is provided on the tubular surface 8 forming a seal lip 5 in the metal mold 7. The spiral groove is so fine as to have a groove depth of 0.001 to 0.05mm. By means of the metal mold as described above, on the inner periphery of the seal lip 5 are formed fine spiral groove and projecting strip, the height of which is a little smaller than the groove depth of the metal mold. By inserting the main body of seal on an arbitrary rotary shaft, the sliding seal surface is constituted at the inner periphery of the seal lip 5. The unevenness due to the spiral groove and projecting strip of the sliding seal surface becomes nearly flat by pressing to secure the sealing at a standstill. When the shaft rotates, the spiral unevenness communicates itself to the sliding seal surface and the leakage is prevented by screw pump action.
COPYRIGHT: (C)1981,JPO&Japio
JP5403480A 1980-04-22 1980-04-22 Oil seal Pending JPS56150662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5403480A JPS56150662A (en) 1980-04-22 1980-04-22 Oil seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5403480A JPS56150662A (en) 1980-04-22 1980-04-22 Oil seal

Publications (1)

Publication Number Publication Date
JPS56150662A true JPS56150662A (en) 1981-11-21

Family

ID=12959298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5403480A Pending JPS56150662A (en) 1980-04-22 1980-04-22 Oil seal

Country Status (1)

Country Link
JP (1) JPS56150662A (en)

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