... .5. Packing: neutral or as per client's requirement.6. Colour: red ,white,black ,blue ... on your requirement ,but o-ring's mold fee is free.Company Name: ... , Polyurethane Products, TPU Products TPU, PTFE Seal, Molded Products Number of Employees: 301 - ... Seal Test Bed,Rubber Brittle Low-Temperature Test Bed, Aging Test, Thickness Meter, Shore-A Hardness Tester, Optical Projector ptfe mechanical ring seal ...