STD is composed of O-ring and PTFE ring.
The O-ring can be made of NBR, FKM, HNBR and other materials.
Temperature is generally -45~+200℃. It is determined by the material of the O-ring, and the color is often Black, green, etc., and can be customized according to your needs.
The main function of STD is to prevent dust. It is used in piston rods and reciprocating plungers. It is often used in excavators, presses, and other machinery.
