$288.40
This is the Pfeiffer Part# PSK027 Seal Kit for the DUO 250A vacuum pump. This comprehensive kit includes O-rings, shaft seals, gaskets, and valve seats. Designed specifically for the DUO 250A, this kit provides everything you need to restore the sealing integrity of your pump during routine maintenance.
Seal Kit, Pfeiffer DUO 250A
Seal Kit, Pfeiffer DUO 250A
The DUO 250A is a large, powerful two-stage rotary vane pump. It is built for tough industrial jobs. This pump holds about 23 liters of oil. That tells you how big it is. It is used in many demanding applications where a strong, reliable vacuum is needed.
This kit includes every rubber seal your pump needs. Here is the complete list of what you get:
| Part Number | Description | Quantity |
|---|---|---|
| 4070166 | O-ring, 10 x 2.5 mm – Viton | 1 |
| 4070259 | O-ring, 15 x 2.5 mm – Viton | 2 |
| 320177 | O-ring, 18 x 2.0 mm – Viton | 1 |
| 4070333 | O-ring, 19 x 2.5 mm – Viton | 1 |
| 4070420 | O-ring, 24 x 2.5 mm – Viton | 4 |
| 320524 | O-ring, 32 x 2.5 mm – Viton | 1 |
| 02124025 | O-ring, 28 x 5 mm – Viton | 1 |
| 4070621 | O-ring, 38 x 3.0 mm – Viton | 2 |
| 320535 | O-ring, 500 x 3 mm – Viton | 1 |
| 320534 | O-ring, 180 x 5 mm – Viton | 1 |
| 48656700 | O-ring, 140 x 5 mm – Viton | 1 |
| PL23970419 | O-ring, 125 x 5 mm – Viton | 3 |
| 320533 | O-ring, 47 x 2.5 mm – Viton | 1 |
| 02106062 | O-ring, 107.32 x 5.33 mm – Viton | 4 |
| PL23970129 | O-ring, 65 x 5 mm – Viton | 2 |
| PL23970149 | O-ring, 8 x 2 mm – Viton | 1 |
| 320538 | O-ring, 85 x 5 mm – Viton | 1 |
| 4070088 | O-ring, 6 x 2.2 mm – Viton | 2 |
| 300167 | Sight Glass Gasket | 2 |
| 300214 | Ring Gasket | 2 |
| 310152 | Single Lip Shaft Seal | 2 |
| 390028 | Valve Seat | 2 |
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10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
This Dowty Seal (Part #38250019) is a replacement part made for Pfeiffer vacuum pumps. It measures exactly 12.7 mm inside, 18 mm outside, and is 1.5 mm thick. This seal works with both the DUO 250A and UNO 250A pump models. Its job is to create a tight, airtight seal that stops leaks and keeps your pump running at its best. If you are rebuilding your pump or fixing a small leak, this is the right part for the job.
10 in stock
10 in stock
This Viton O-ring (Part# PL23970129) measures 65 mm inside diameter with a 5 mm cross-section. Made from Viton (FKM) , it offers excellent resistance to high heat, chemicals, oils, and fuels. It is commonly used in repair kits for Busch, Leybold, and Pfeiffer vacuum pumps and is ideal for creating tight, reliable seals in harsh environments .
10 in stock
10 in stock
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