Seals and O-rings come in a variety of materials, including elastomers that have passed USP Class VI testing, such as Viton® fluoroelastomer (FKM) and EPDM rubber. These elastomers also feature improved chemical resistors, excellent heat resistance (400° F/200° C), and low permeability to gases. They are available as microminiature O-rings, and products such as molded inserts, bushings, poppets and connector seals. Custom shapes and seals are available in silicone and a wide variety of materials.
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