... . Oil or grease media sealing 5. Water media sealingCompany Name: Best Ring Technology Co. , Ltd. Business Type: Manufacturer Ownership Type: Joint ... Bushing, Rubber Boots, Rubber Tube, Polyurethane Products, TPU Products TPU, PTFE Seal, Molded Products Number of Employees: 301 - 400 People Number ... , Aging Test, Thickness Meter, Shore-A Hardness Tester, Optical Projector teflon oil gasket for auto