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, valve components, and internal wear parts helps restore vacuum performance, reduce oil contamination, and extend pump life.
This high-quality rebuild kit includes critical wear components required for a complete overhaul and is designed to meet or exceed OEM specifications.
Kit Includes
Mechanical Seal Components
| Part Number | Description | Qty |
|---|---|---|
| 411401F | Mechanical Shaft Seal Assembly | 1 |
| 411401F-01 | Shaft Seal Kit | 1 |
Valve & Control Components
| Part Number | Description | Qty |
|---|---|---|
| 412260 | Lever Valve Kit | 1 |
| 410055 | Spacer | 1 |
| 410696 | Spring Holder | 1 |
| 410715 | V-Belt | 2 |
| 410992 | Pressure Relief Valve | 1 |
| 412161 | Pressure Release Valve | 1 |
| 412256 | Valve Spring | 1 |
| 412259 | Valve Spring | 1 |
| 411508 | Valve Gasket | 1 |
| 4401200 | Steel Ball | 1 |
Washers & Seals
| Part Number | Description | Qty |
|---|---|---|
| 411056 | Aluminum Washer | 4 |
| 411137 | Aluminum Washer | 2 |
| 411266 | Tension Washer | 2 |
| 411267 | Rubber Washer | 2 |
Vanes & Springs
| Part Number | Description | Qty |
|---|---|---|
| 411477 | 1st Stage Iron Vane | 2 |
| 411487 | 2nd Stage Iron Vane | 2 |
| 411304 | Vane Spring | 2 |
| 411488 | Vane Spring | 4 |
| 411489 | Spring Holder | 2 |
Recommended Add-Ons
- Vacuum Pump Oil: VPL M100 Oil (5L)
- Disposable Exhaust Filter: Welch 1397 Disposable Filter
- Flushing Fluid: FF-005 Flushing Fluid
Compatible Pumps
- Welch 1397
- Welch 1397PI
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.
