Tri-Clamp gaskets are used to create a secure and leak-proof seal between two Tri-Clamp fittings, commonly used in the food, beverage, pharmaceutical, and biotech industries. The gaskets can be made from a variety of materials, including polymers.

Some common polymers used to make Tri-Clamp gaskets include:

• Silicone - Silicone gaskets are popular due to their high temperature resistance and excellent sealing properties. They can withstand temperatures ranging from -80°F to 450°F and are highly durable.
• EPDM - Ethylene Propylene Diene Monomer (EPDM) is a popular polymer used for Tri-Clamp gaskets due to its excellent resistance to water, steam, and chemicals. It can withstand temperatures ranging from -40°F to 300°F.
• Viton - Viton is a synthetic rubber polymer that is highly resistant to chemicals and can withstand temperatures ranging from -40°F to 400°F. It is often used in high-temperature applications such as steam cleaning and sterilization.
• Teflon - Teflon, also known as polytetrafluoroethylene (PTFE), is a popular polymer used in high-purity applications due to its chemical resistance and non-stick properties. It can withstand temperatures ranging from -400°F to 500°F.
• Polyester: a synthetic fabric used in clothing and upholstery

The choice of polymer for Tri-Clamp gaskets depends on the specific application and the chemicals, temperature, and pressure involved.