• O-ring, 180 x 5 mm – Viton, Part# 320534 $37.10

    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

  • O-ring, 2.2 x 1 mm – Viton, Part# 4070015 $4.83

    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

  • O-ring, 22 x 1.5 mm – Viton, Part# 320175 $3.71

    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

  • O-ring, 22 x 3 mm – Viton, Part# 23970410 $3.78

    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 .

  • O-ring, 22 x 3.0 mm – Viton, Part# 320179 $4.55

    This Viton O-Ring (Part #320179) is a critical sealing component for your Pfeiffer DUO vacuum pump . It measures 22 mm (inner diameter) x 3.0 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 family of pump models . If you are rebuilding your pump or performing routine maintenance, this O-ring is a must-have part.

  • 10 in stock

  • O-ring, 25 x 3.0 mm – Viton, Part# 320180 $4.55

    This Viton O-Ring (Part #320180) is a critical sealing component for your Pfeiffer DUO vacuum pump . It measures 25 mm (inner diameter) x 3.0 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 5, DUO 5C, DUO 10, and DUO 10C 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 Major Overhaul Kit for the DUO 5 (Part # PKE32008T) , where exactly one of these O-rings is used .

  • 10 in stock

  • 10 in stock

  • O-ring, 28 x 5 mm – Viton, Part# 02124025 $8.82

    This Viton O-Ring (Part #02124025) is a critical sealing component for your Pfeiffer vacuum pump. It measures 28 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 compatible with Pfeiffer DUO and UNO pump families . It fits the Pfeiffer DUO 120A, DUO 125, DUO 255M (Index C), DUO 10, DUO 10C, DUO 20, DUO 20C, and UNO 30M 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 120A (PSK024) , the Seal Kit for the DUO 125 (PSK025) , and the Seal Kit for the DUO 255M (PSK028) .

  • O-ring, 28 x 5mm – Viton, Part# 4070488 $143.50

    This Viton O-Ring (Part #4070488) is a critical sealing component for your Pfeiffer DUO 120A vacuum pump . It measures 28 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 120A pump model . 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) and the Major Overhaul Kit (Part # PMK024) for the DUO 120A, where exactly one of these O-rings is used .

  • O-ring, 32 x 2.5 mm – Viton, Part# 320524 $4.41

    This Viton O-Ring (Part #320524) is a critical sealing component for your Pfeiffer DUO vacuum pump . It measures 32 mm x 2.5 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, 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 (Part # PSK024) for the DUO 120A .

  • 10 in stock

  • 10 in stock

  • 10 in stock

  • 10 in stock

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