Product Description
Welch 1397 Major Repair Kit with Mechanical Seal
Equivalent to 1397K-08
This major repair kit with mechanical seal is designed to fully rebuild Welch 1397 and 1397PI vacuum pumps. Replacing vanes, seals, gaskets, and internal components restores vacuum performance, reduces oil contamination, and extends pump life.
Kit Includes
Mechanical Seal
- 411401F – Mechanical Shaft Seal Assembly (Qty 1)
- 411401F-01 – Shaft Seal Kit (Qty 1)
Valve & Control Components
- 412260 – Lever Valve Kit (Qty 1)
- 410055 – Spacer (Qty 1)
- 410696 – Spring Holder (Qty 1)
- 410715 – V-Belt (Qty 2)
- 410992 – Pressure Relief Valve (Qty 1)
- 412161 – Pressure Release Valve (Qty 1)
- 412256 – Valve Spring (Qty 1)
- 412259 – Valve Spring (Qty 1)
- 411508 – Valve Gasket (Qty 1)
- 4401200 – Steel Ball (Qty 1)
Washers & Seals
- 411056 – Aluminum Washer (Qty 4)
- 411137 – Aluminum Washer (Qty 2)
- 411266 – Tension Washer (Qty 2)
- 411267 – Rubber Washer (Qty 2)
Vanes & Springs
- 411477 – 1st Stage Vane (Qty 2)
- 411487 – 2nd Stage Vane (Qty 2)
- 411304 – Vane Spring (Qty 2)
- 411488 – Vane Spring (Qty 4)
- 411489 – Spring Holder (Qty 2)
Keys & Sleeves
- 411490 – Woodruff Key (Qty 2)
- 411516 – Woodruff Key (Qty 1)
- 412257 – Hardened Sleeve (Qty 1)
- 412258 – Hardened Sleeve (Qty 1)
Gaskets
O-Rings
Recommended Add-Ons
- Vacuum Pump Oil: VPL M100 Oil (5L)
- Disposable Exhaust Filter: Welch 1397 Disposable Filter
- Flushing Fluid: FF-005 Flushing Fluid
For best results, replace vacuum pump oil and filtration during rebuild. Proper maintenance helps maintain vacuum performance, reduce oil mist, and extend service life on Welch 1397 and 1397PI pumps.
