X ring is a kind of sealing product which is usually ... Compressor in air conditioning, etc.3. Main products: O-Ring.X Ring V-Ring.R-Ring. Y-Ring.U-Ring., Oil ... o-ring's mold fee is freeCompany Name: Best Ring Technology Co. , Ltd. Business Type: Manufacturer Ownership Type: Joint ventureRegistered capital: RMB 5 ... Test, Thickness Meter, Shore-A Hardness Tester, Optical Projector rubber x seal