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SKF 24951 shaft seal, transparent nitrile rubber, 2.5 by 3.428 by .375 in

SKF

SKF 24951 Shaft Seal 2.5 x 3.428 x .375 in

SKU CH-95RG-11DTJ

Rotary shaft seal with 2.5 in inside diameter, 3.428 in outside diameter and .375 in width for oils, greases and fuels up to 10 psi and 2,640 RPM

  • ColorTransparent
  • Width3/8"
  • SKF quality shaft seal ensures reliable engine sealing
  • CRWA1 design with dual lips contains fluids up to 10 psi
  • Nitrile rubber lip resists oil, fuel, grease and hot water
  • Carbon steel spring maintains constant lip pressure at 2,640 RPM
  • Inch-dimensioned 2.5 in ID by 3.428 in OD fits standard housings

Product Identity

The SKF 24951 is a rotary shaft seal built to the CRWA1 design code. It fits a 2.5 in inside diameter and a 3.428 in outside diameter with an overall width of .375 in. The unit uses nitrile rubber lips and a carbon steel spring for reliable sealing in engine assemblies.

Suitability

This seal suits maintenance teams working with mineral oils, gasoline, diesel, greases, animal and vegetable oils, light heating oil or hot water. It handles up to 10 psi and 2,640 RPM so it is not for high-pressure hydraulic circuits or shafts that run faster than the rated speed. Buyers needing a different bore size or a higher pressure rating should look at something else.

Installation Notes

Press the seal squarely into the housing until the acrylic-coated case seats fully; the carbon steel spring holds the twin lips against the shaft. Damage usually comes from cocking the seal during press-in, nicking the nitrile lips on sharp edges or running the shaft beyond 8.81 mps surface speed. Clean the bore and shaft beforehand to avoid early leaks.

Highlights

  • SKF quality shaft seal ensures reliable engine sealing
  • CRWA1 design with dual lips contains fluids up to 10 psi
  • Nitrile rubber lip resists oil, fuel, grease and hot water
  • Carbon steel spring maintains constant lip pressure at 2,640 RPM
  • Inch-dimensioned 2.5 in ID by 3.428 in OD fits standard housings

Specifications

BrandSKF
ColorTransparent
Width3/8"

Questions about this item

What shaft diameter must I already have for the SKF 24951 seal to fit?

The seal requires a shaft with a 2.5 in inside diameter for proper installation.

Will the 2,640 RPM speed limit work with my older equipment running at lower speeds?

Yes, the seal handles speeds up to 2,640 RPM, so it performs reliably on older machinery operating below that limit.

How can I confirm the seal is seated correctly after pressing it into the 3.428 in bore?

Verify the 0.375 in width sits flush, the dual lips contact the shaft evenly, and no fluid leaks appear at 10 psi test pressure.

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