JPS5560764A - Double mechanical seal - Google Patents

Double mechanical seal

Info

Publication number
JPS5560764A
JPS5560764A JP13340978A JP13340978A JPS5560764A JP S5560764 A JPS5560764 A JP S5560764A JP 13340978 A JP13340978 A JP 13340978A JP 13340978 A JP13340978 A JP 13340978A JP S5560764 A JPS5560764 A JP S5560764A
Authority
JP
Japan
Prior art keywords
seal
fluid
seal ring
face
ring
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
JP13340978A
Other languages
Japanese (ja)
Inventor
Akira Washishiya
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 JP13340978A priority Critical patent/JPS5560764A/en
Publication of JPS5560764A publication Critical patent/JPS5560764A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Sealing (AREA)

Abstract

PURPOSE: To prevent a seal-up fluid from leaking even if the pressure of the fluid becomes higher than that of lubricating liquid for a double mechanical seal, by making the outside diameter of a packing which supports a seal ring, larger than that of the seal-up end face of the seal ring.
CONSTITUTION: Two seal-up end faces S are provided between the external air and a seal box 1 connected to a casing of a fluid machine which contains a seal-up fluid L. The outside diameter of a packing 9 which supports a seal ring 8 movable in the axial direction is made larger than that of the seal-up end face S of the seal ring 8. Another seal ring 7 having another seal-up end face S is fixed not to move in the axial direction. An optional lubricating fluid Z is filled between both the seal-up end faces S. When the pressure of the seal-up fluid L becomes higher than that of the lubricating fluid L, the seal ring 8 is thrusted on the seal-up end face S of the other seal ring by the pressure of the seal-up fluid L.
COPYRIGHT: (C)1980,JPO&Japio
JP13340978A 1978-10-30 1978-10-30 Double mechanical seal Pending JPS5560764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13340978A JPS5560764A (en) 1978-10-30 1978-10-30 Double mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13340978A JPS5560764A (en) 1978-10-30 1978-10-30 Double mechanical seal

Publications (1)

Publication Number Publication Date
JPS5560764A true JPS5560764A (en) 1980-05-08

Family

ID=15104082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13340978A Pending JPS5560764A (en) 1978-10-30 1978-10-30 Double mechanical seal

Country Status (1)

Country Link
JP (1) JPS5560764A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021028511A (en) * 2019-08-09 2021-02-25 イーグル工業株式会社 Double mechanical seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021028511A (en) * 2019-08-09 2021-02-25 イーグル工業株式会社 Double mechanical seal

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