$8.33
This Viton O-ring (Part# PL23970129) measures 65 mm inside diameter with a 5 mm cross-section. Made from Viton (FKM) , it offers excellent resistance to high heat, chemicals, oils, and fuels. It is commonly used in repair kits for Busch, Leybold, and Pfeiffer vacuum pumps and is ideal for creating tight, reliable seals in harsh environments .
O-Ring,Viton,65 X 5 MM Part# PL23970129
O-Ring,Viton,65 X 5 MM Part# PL23970129
Viton is not the cheapest option. But it is often the best choice. Here is why :
Handles High Heat: Viton works in extreme temperatures. It stays flexible and effective from -15°F (-26°C) up to 400°F (204°C) . This makes it perfect for pumps and engines that run hot.
Resists Chemicals: Viton stands up to oils, fuels, acids, and solvents. Standard rubber would swell or dissolve. Viton stays strong .
Low Outgassing: In vacuum systems, gases trapped in rubber can release and ruin the process. Viton has very low outgassing. This keeps your vacuum clean and strong .
Long Life: Because it resists heat and chemicals, Viton lasts much longer than standard rubber. You fix the leak once and do not worry about it again.
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This Rotex 55 spider coupling (Part # 0512000116) is a elastomeric insert designed for KTR Rotex Size 55 jaw couplings . Made from high-strength T-PUR material with 92 Shore A hardness, this orange spider sits between the coupling hubs to transmit torque, dampen vibrations, and compensate for minor shaft misalignments . It is ideal for use with vacuum pumps driven by electric motors where reliable, low-maintenance power transmission is required.
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