Leybold Ruvac pump with this high-quality Viton O-ring. sized at 11.5 x 3 mm, this  is a critical component used across many Ruvac pump models . Made from durable Viton (FKM) material, it offers excellent resistance to heat and chemicals for reliable, long-lasting performance.

This is a Viton O-ring made for your Leybold Ruvac vacuum pump. . It is designed to fit a wide range of Ruvac models, including the WA150, WS250, and WSU251 series . Made from durable Viton, this ring provides a reliable seal that resists heat and chemicals.

Leybold Ruvac pump sealed and running efficiently with this Viton O-ring. The O-ring, 40 x 5 mm – Viton,  is a direct replacement part designed for a perfect fit on a wide range of Ruvac pump models . This critical sealing component is also found in official Leybold seal kits for many of these pumps, including models like WA151, WA251, WS151, and WS251 . Made from high-quality Viton (FKM), this seal offers superior resistance to heat and chemicals compared to standard rubber seals.