Vented static seal assembly

A seal assembly (12) for a high pressure pump where there is an O-ring (38) positioned in a seal groove (60) having side seal surfaces (74, 76) and a back seal surface (84), with said O-ring (38) being exposed alternately to high and low pressures in the pumping chamber. A pressure relief passageway...

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Bibliographic Details
Main Authors TREMOULET, OLIVIER L, BUCHBERGER, ANTON H, MORDRE, SIGURD C
Format Patent
LanguageEnglish
French
German
Published 10.10.1990
Subjects
BLASTING
CYLINDERS
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
PISTONS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
SEALINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:A seal assembly (12) for a high pressure pump where there is an O-ring (38) positioned in a seal groove (60) having side seal surfaces (74, 76) and a back seal surface (84), with said O-ring (38) being exposed alternately to high and low pressures in the pumping chamber. A pressure relief passageway (88) is provided to the O-ring (38) at a side surface portion (74) thereof to provide pressure relief at the back side of the O-ring (84) and thus alleviate unwanted fluid accumulation behind the O-ring (38), thus extending the longevity of the O-ring (38).
Bibliography:Application Number: EP19900200804