Scot 118.000.383 Repair Kit — Motorpump 57 Seal Kit
The Scot 118.000.383 repair kit is the service kit for Scot Motorpump 57 and 57E. These models use a 1-1/2? Type 21 seal arrangement rather than the standard arrangement found across the rest of the JM-frame line, so they take this kit and not the 118.000.344. Supplied complete, and built to OEM-equivalent standards or higher.
What’s included:
Available Versions
Same kit, same fit — the difference is the seal material inside. Choose your build from the dropdown above.
Most Motorpump 57 installations take the Standard Kit. Step up to an Upgrade Kit if your system runs hotter, carries glycol or chemicals, handles gritty water, or the pump runs at 3500 RPM on a long duty cycle.
| Kit |
Max °F |
Choose This If |
| Standard – Carbon/Ceramic/Nitrile |
200°F |
Clean water at neutral pH. The standard build. |
| Upgrade – Carbon/Ceramic/EPDM |
300°F |
Hot water, steam, caustic or glycol systems. |
| Upgrade – Carbon/Silicon Carbide/EPDM |
300°F |
Same duty, harder seat — for seals wearing out early. |
| Heavy Duty – Silicon Carbide/EPDM |
300°F |
Hot water or glycol carrying grit or solids. |
| Upgrade – Carbon/Ceramic/Viton |
450°F |
Higher temperatures, bleach, aggressive chemicals. |
| Top gradeHeavy Duty – Silicon Carbide/Viton |
450°F |
Chemicals plus abrasives. Hardest faces we offer. |
Not sure? Text a photo of your pump nameplate to 561-414-1046 and tell us what the system runs — we’ll tell you which build to order. No purchase required.
Applications:
The Motorpump 57 and 57E are the higher-duty end of the Scot JM-frame line, run at 1150, 1750 and 3500 RPM in commercial heating and chilled water circulation, domestic water boosting and process water service. Faster shaft speeds and longer duty cycles are hard on a seal, which is what makes the material choice below worth a moment’s thought on this model in particular.
The Scot 118.000.383 repair kit fits the 1-1/2? Type 21 seal on Motorpump 57 and 57E.
Note: Every other Motorpump size in this frame range — 50, 52, 53, 54, 55, 65 and 81 — uses a different seal arrangement and takes the 118.000.344 kit instead. Verify your pump nameplate, motor and frame at checkout so we can confirm the correct kit.
Have questions? Call us anytime-we’re here to help
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