Teflon Bellow Seals

Stationary Ring : Ceramic/SIC
Rotary Ring : Carbon/SIC/PTFE/GFT
Bellow : PTFE
Secondary Seal : PTFE
Springs & Others Parts : AISI 316/AM 350/Hastelloy- C/Titanium.

The PTB - Series Seals are externally mounted Teflon bellow seals which are capable for handling high corrosive acidic applications. The design incorporates an flexible bellow which is made out of virgin Teflon and the faces and the clamping ends are made out of GFT(Glass Filled Teflon). The mating ring is of Pure Ceramic with high alumina(A1₂O₃99.9%). The springs are in AISI 316, Hastelloy- C & Titanium. These seals are supplied with an interchangeable faces which can avoid the replacement cost of the total seal.