this shaft sealing ring for Becker U Series pumps. Made for U4.165, U4.190, and U4.250 models and their variations. This critical part seals the rotating shaft where it enters the pump housing. If this seal fails, oil will leak out and air will leak in. OEM quality direct replacement.
Becker vacuum pump with this high-quality Viton valve washer. Made for U Series models including U4.165, U4.190, and U4.250. The Viton material gives you better resistance against heat, oil, and chemicals compared to standard rubber washers. A small part that makes a big difference.
Valve Washer having material Viton is used on Becker U Series pump model U4.165E, U4.165F, U4.165, U4.190E, U4.190F, U4.190, U4.250E, U4.250F, U4.250