The Busch Part# 320275 is a Viton O-Ring with dimensions of 53.57 mm inside diameter x 3.53 mm cross section. This is a standard metric size that matches the popular AS568-227 dash number . Made from high-grade Viton (FKM), it offers excellent resistance to high temperatures, oils, and harsh chemicals. It is a direct replacement seal for specific Busch vacuum pump applications.
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