can be designed according to different size of groove,installing position,and seal demand.working temperature;-40~120°C,working medium:compressed air, hydraulic oil.some used in military.
dust ring
This type of products is made of nitrile rubber and polyurethane rubber,use to protect the dustproof in reciprocating cylinder,piston rod,and compressor machine, It has common and special type,also has skeleton and non-skeleton type.