... sealing products which is usually made of springing material and through the molding way to make it in the ... parts. O-Ring is good at both in static seal and dynamic seal, material:SILICONFeature of O-Ring :1. Many ... : O-type, E-type, U-type, V-type and so on, can make on your type. 3. Different ... Optional color for you of the oil seal, O-Ring and rubber gasket: Black, red, yellow, brown, white, green, ...