This is the official Busch O-Ring made of Viton material, sized 280 mm x 3 mm (Part #486000751) . Viton (FKM) is a high-performance rubber compound known for excellent resistance to high temperatures, chemicals, oils, and solvents. This O-ring is used specifically on Busch Panda vacuum pump models WV1500B and WV1500C . It provides a secure and effective seal, ensuring the integrity of your pump system and preventing leaks.
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