Back pumping seal assembly

Details Back pumping seal assembly Back pumping seal assembly

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/32 (2006.01) F16J 15/16 (2006.01)

Patent

CA 2488655

A back pumping seal assembly (16) includes a buffer seal (18) and a backup ring (20). The buffer seal (18) has inner, outer, front, and back seal faces. The buffer seal (18) further has a contoured face portion inset and extending inwardly from the inner and back seal faces. The contoured face defines a back seal channel (54). The backup ring (20) is positioned in the back seal channel of the buffer seal (18). The first channel-directed face of the backup ring (20) is configured for limiting displacement of an adjacent portion of the buffer seal (18).

L'invention concerne un ensemble joint de pompage arri­re (16). Ledit ensemble comprend un joint tampon (18) et une bague antiextrusion (20). Le joint tampon (18) pr~sente des faces d'~tanch~it~ int~rieure, ext~rieure, avant et arri­re. Le joint tampon (18) pr~sente ~galement une partie de face profil~e rentr~e et s'~tendant vers l'int~rieur depuis les faces d'~tanch~it~ int~rieure et arri­re. La face profil~e d~finit un canal d'~tanch~it~ arri­re (54). La bague antiextrusion (20) est positionn~e dans le canal d'~tanch~it~ arri­re du joint tampon (18). La premi­re face dirig~e vers le canal de la bague antiextrusion (20) est con×ue pour limiter le d~placement d'une partie adjacente du joint d'~tanch~it~ (18).

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