This Buna O-ring measures exactly 78.74 mm inner diameter with 5.33 mm thickness. It replaces Part #2125181 (cross-reference OB-3255) . This O-ring is specifically used on Edwards E1M275 and E2M275 pump models . The Buna-N (Nitrile) material offers great oil resistance at a fair price.
10 in stock
This is a high-quality Viton O-ring. It measures 78.97 mm inside diameter and 3.53 mm cross section. The material is Viton, also known as FKM or FPM. This O-ring resists high heat and harsh chemicals better than standard rubber. It is a direct replacement for Part #50235. Use it to seal heads, bearing housings, and caps on Kinney rotary piston vacuum pumps
This Buna O-ring measures exactly 79.5 mm inner diameter with 3 mm thickness. It replaces Part #2120085 This O-ring is specifically used on Edwards E2M28 and E2M30 pump models . The Buna-N (Nitrile) material offers great oil resistance at a fair price and is the standard choice for oil-sealed vacuum pumps.
This is the Pfeiffer Part# 4070949, a small 8 mm x 2 mm O-ring made from high-quality Viton rubber . It is a replacement seal for Pfeiffer DUO 5 and DUO 5C vacuum pumps. Use this part to fix small leaks and keep your pump running smoothly.
10 in stock
10 in stock
10 in stock
Keep your vacuum pump running smoothly with this high-quality Viton O-ring. Measuring 8 mm inside diameter (ID) x 2.0 mm width (CS) , this Part# 4070125 is a direct replacement for specific Pfeiffer and Leybold pumps. Made from durable Viton (FKM) , it resists heat, chemicals, and oil to prevent leaks.
10 in stock
Busch vacuum pump sealed tight with this 80mm x 5mm Viton O-Ring. Part# 320272 is made from high-quality FKM (Viton) rubber. It is tough against heat and oil. This is a direct replacement part for many Busch pump models, including the R5 series. Get a perfect fit and stop leaks today.
10 in stock
vacuum pump sealed tight with this 85mm x 3mm Viton O-Ring. Part# 980333 is made from high-quality FKM (Viton) rubber. It resists heat, oils, and chemicals. This is a direct replacement part for Alcatel-Adixen, Ebara, and Busch pumps including ACP15, A30W, A70W, and WV1500 series. Stop leaks and maintain strong vacuum pressure.
10 in stock
This Buna O-ring measures exactly 85.09 x 5.33 mm and replaces Part #2125055. It is a direct fit for pump models like E1M175 and E1M275 . The Buna-N material offers great oil resistance at a fair price.
This Buna O-ring measures exactly 86 mm inner diameter with 2 mm thickness. It replaces Part #02124086. This O-ring is specifically used on Edwards E2M2, E2M5, E2M8, and E2M12 pump models . The Buna-N (Nitrile) material offers great oil resistance at a fair price and is the standard choice for oil-sealed vacuum pumps.
This Buna O-ring measures exactly 86 mm inner diameter with 2 mm thickness. It replaces Part #27159503 . This O-ring is specifically used on Edwards E2M2, E2M5, E2M8, and E2M12 pump models . It is also included in the Seal Kit #37001820 for E1/E2M family pumps . The Buna-N (Nitrile) material offers great oil resistance at a fair price .
10 in stock
10 in stock
This Viton O-Ring (Part #320522) is a critical sealing component for your Pfeiffer DUO vacuum pump . It measures 88 mm x 5 mm. Made from Viton, a high-performance synthetic rubber, this O-ring creates a tight, reliable seal. It prevents leaks and keeps your vacuum pressure strong. This O-ring is designed for the Pfeiffer DUO 120A and DUO 125 pump models . If you are rebuilding your pump, this O-ring is a must-have part. In fact, it is included as a standard component in the Seal Kit (Part # PSK024) for the DUO 120A .
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