Get your vacuum pump back in shape with this large, durable Viton O-ring. Measuring 150 mm inside diameter (ID) x 3.0 mm width (CS) , this Part# 29361336 is a perfect fit for the Pfeiffer DUO 125 pump. It is also used in repair kits for Edwards EH/QMB booster pumps. Made from high-quality Viton (FKM) , it handles the high heat and oils of industrial vacuum systems without breaking down.
10 in stock
This Viton O-Ring (Part #320174) is a critical sealing component for your small Pfeiffer DUO vacuum pump . It measures 16 mm (inner diameter) x 1.0 mm (cross section). 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 2.5 and DUO 2.5C 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 for the DUO 2.5C (Part # PKE00020T) , where two of these O-rings are used , as well as in the Minor Kit for the DUO 2.5 (Part # 194324) , which contains one of these O-rings .
10 in stock
10 in stock
This is the Pfeiffer Part# 4071536, a large 165 mm x 3 mm O-ring made from durable Viton rubber . It is a replacement seal for Pfeiffer DUO 5 and DUO 10 series vacuum pumps . Use this part to stop oil leaks and keep your pump running strong.
10 in stock
This Viton O-Ring (Part #320177) is a critical sealing component for your Pfeiffer DUO vacuum pump. It measures 18 mm (inner diameter) x 2.0 mm (cross section). 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 specifically for the Pfeiffer DUO 125 and DUO 255M (Index C) 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 for the DUO 125 (Part # PSK025) , where exactly one of these O-rings is used .
This Viton O-Ring (Part #320178) is a critical sealing component for your vacuum pump. It measures 18 mm (inner diameter) x 5.0 mm (cross section) . 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 compatible with Pfeiffer, Welch, DUO, UNO, and CRVpro pump brands and families . It fits the Pfeiffer DUO 2.5, DUO 2.5C, DUO 1.6, DUO 3, DUO 5, DUO 5C, UNO 6, and Welch CRVpro 6 and CRVpro 8 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 for the DUO 6 / DUO 6M (Part # PSK010), where two of these O-rings are used .
10 in stock
This Viton O-Ring (Part #320534) is a critical sealing component for your large Pfeiffer DUO vacuum pump . It measures 180 mm (inner diameter) x 5 mm (cross section). 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 specifically for the Pfeiffer DUO 255M (Index C) pump model . If you are rebuilding your large DUO pump, this O-ring is a must-have part. In fact, it is included as a standard component in the Seal Kit (Part # PSK028) and the Major Overhaul Kit (Part # PMK028) for this pump .
10 in stock
10 in stock
10 in stock
10 in stock
This Viton O-Ring (Part #4070015) is a small but critical sealing component for your Pfeiffer vacuum pump . It measures 2.2 mm (inner diameter) x 1 mm (cross section) . Made from Viton, a high-performance synthetic rubber, this tiny O-ring creates a tight, reliable seal in a precise location within your pump.
This O-ring is designed for the Pfeiffer UNO 1.5A and DUO 1.5A 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 Minor Repair Kit (Part # 080010) for these pumps .
10 in stock
This Viton O-Ring (Part #320175) is a versatile sealing component for your small Pfeiffer DUO vacuum pump. It measures 22 mm (inner diameter) x 1.5 mm (cross section) . 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 1.6, DUO 2.5, DUO 2.5C, DUO 3, DUO 5, DUO 5C, and DUO 6 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 Minor Kit for the DUO 2.5 (Part # 194324), where two of these O-rings are used .
10 in stock
This is the vacstellar Part# 23970410, a 22 mm x 3 mm O-ring made from high-quality Viton rubber . It is a direct replacement seal used on many Leybold and Pfeiffer vacuum pumps including Trivac S4A, Sogevac SV series, and DUO series models . You will also find this O-ring included in several major repair and seal kits .
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