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Made of FEP-encased Viton® fluoroelastomer, these gaskets resist acids and solvents.
Both the FEP casing and the silicone core are made of FDA-listed material. These gaskets resist vegetable and mineral oils, as well as acids and detergents.
The FEP casing on these O-rings provides the same level of resistance to harsh chemicals as PTFE O-rings, but the core material is soft to make these O-rings more compressible.
Unlike silicone, the Viton® fluoroelastomer core will continue to ward of chemicals should the FEP casing wear away.