It is used in pumps with piston diameter 3/8" as auxiliary seal in washing head.It is made from material virgin PTFE.
If such chemical composition is not acceptable for you, we can offer seal from another material.
As main seal is used in this type of pump the seal from material GFP (P/N 9943600).
By seal changing must the spring directed out of unit.
For pump types ECP2050/2200/2300, Theta and Iota.