Gaskets, Material : Rubber, PTFE Teflon

Another type of static seal highly useful in a wide range of environments is a gasket. These flat mechanical seals are commonly used to prevent leakage between two flanges while under compression.
Advantages
Ability to withstand high compressive loads (2000 psi or higher)
Nearly unlimited range of materials
Unlimited variety of standard and custom shapes to fit any application
Web Seal offers gaskets in:
Sizes from 0.25 inch to 10 feet
Low-volume to high-volume runs
Many applications lend themselves to a custom cut shape that accomplish precise sealing, packaging or placement needed by your component or equipment.