... check valve rubber, rubber filter, rubber compensator air flue compensator, flexible hanger, rubber shock pad, shock absorber, pipe damper, seal, ... water, oil, acid and alkali. Special type used to transport -30--250 centigrade over the medium or oil, strong alkali acid ... 100(750)Tempreture-15~115special customer made could reach to -30--250Mediaair ,compressed air,water,sea water,oil,acid,alkali etc ...