These are ANSI standard, 150# class rings. If you need another class (i.e. 300, 600, 900, etc…) just let us know. We can make it!
EPTFE (Expanded PTFE) is a Universal sheet EPTFE gasket material for most services. Seals rough and irregular surfaces. Made from biaxial oriented expanded PTFE sheeting that is laminated to the required thickness. Seals of up to 3000+psi can be achieved depending on the flange type & design and type of media being sealed. Chemically resistant over the 0-14 pH range.
This is by far our favorite material due to its ability to seal just about anything!