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Back-up Ring
 
 
 
Back-up Ring (背托環 )
Material: NBR90 Shore A
EPDM 90 Shore A
Viton (FKM) 90 Shore A

Specification: American Standard to cover AS568A series

O-RING

BACK-UP RING

Custom Molded

Oil Seals

Silicone Extruding
Profile trbing, Cords, Wire