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Capitol Vacuum Repair Kits and Parts for Welch Vacuum Pumps.

Capitol Vacuum offers high quality repair kits and spare parts for most Welch (formerly Sargent Welch) vacuum pumps. All of our parts are guaranteed to meet or exceed OEM specifications. We only use high quality parts, and every part must pass a thorough inspection before it is accepted into our inventory. In addition, we maintain a complete testing facility where parts are checked and re-checked for proper performance in actual use. Our polymer vanes are made from X-Lon, a proprietary high strength carbon fiber material up to 10 times stronger than most OEM vanes, with virtually no water absorption or thermal expansion. Of course we also supply cast iron vanes for Welch belt drive pumps, and we have a large inventory of parts and kits for the older model pumps that Welch has designated obsolete. And the technicians in our pump test center can provide help with your troubleshooting and repair problems.

Key benefits of using Capitol Vacuum kits:

  • Every thing needed to repair each pump included in one convenient kit
  • All critical parts are included to increase service intervals and reduce downtime
  • Just In Time delivery reduces on site inventory
  • Complete parts kit increases productivity

And if you don't need a whole kit, all of our parts are sold individually so you can purchase only what you need. We stock thousands of Welch vacuum pump repair kits and spare parts so you don't have to just call or fax by 4:00PM (EST) and your order will ship the same day!

MRO Managers: our extensive inventory means same day shipping of your order providing a fast, reliable link in your MRO supply chain management.



  • Liqui-Vac Vacuum Sealant

    Liqui-Vac Vacuum Sealant 1/4 Pint


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