PTFE bellows design, Outside mounted,used in strong corrosive chemical occasions.
It is listed as tetrafluoroethylene bellows, and it adopts multi-spring structure, in which WB2 type spring is protected by teflon shield, which is one of the most widely used in corrosion resistant pumps
Standard size: 1"--2"
Seal ring: Car,Sic,Ssic,Ceramic,PTFE,Glassfill
Secondary seal: PTFE
Spring and metal parts:304,316