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Transparent nitrile rubber shaft seal with metal spring, 2.5 by 3.5 by .438 inches

SKF

SKF 24980 Shaft Seal CRW1 NBR 2.5 x 3.5 x .438 in

SKU CH-WZ8F-GTSBF

Rotary shaft seal with 2.5 in inside diameter, 3.5 in outside diameter and .438 in width, nitrile rubber lip, 10 psi max pressure and 2,640 RPM limit

  • ColorTransparent
  • Width7/16"
  • Seals shafts reliably with NBR lip material
  • Fits 2.5 in ID and 3.5 in OD precisely
  • Handles up to 10 psi pressure rating
  • Operates at 2,640 RPM maximum speed
  • Carbon steel spring maintains consistent lip tension

Engine Tools Shaft Seal

The SKF 24980 is a CRW1 rotary shaft seal built for engines and rotating equipment where a single lip is sufficient. It suits mechanics and plant engineers who need a standard inch-dimension seal for routine maintenance or original-equipment replacement.

Build Fit and Clearance

The seal installs in a 2.5 in bore and seats against a 3.5 in housing with an overall width of .438 in, leaving the shaft free to rotate up to 640 RPM. Its acrylic-coated case resists distortion during press-fit assembly, and the carbon-steel spring maintains lip tension without additional hardware.

Sustained Load Behaviour

Nitrile rubber lip material handles continuous exposure to mineral oils, diesel, gasoline, greases, hot water, light heating oil and animal or vegetable oils at pressures up to 10 psi. The single-lip design limits heat buildup at the maximum surface speed of 8.81 mps, so sealing performance remains stable during extended duty cycles.

Highlights

  • Seals shafts reliably with NBR lip material
  • Fits 2.5 in ID and 3.5 in OD precisely
  • Handles up to 10 psi pressure rating
  • Operates at 2,640 RPM maximum speed
  • Carbon steel spring maintains consistent lip tension

Specifications

BrandSKF
ColorTransparent
Width7/16"

Questions about this item

How many RPM can this seal sustain before it overheats?

The seal is rated for a maximum rotational speed of 2,640 RPM and a surface speed of 8.81 m/s.

What heat or friction should I expect from the lip material during continuous operation?

Nitrile rubber lip material handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils at up to 10 psi pressure.

Which shaft diameter and housing bore does this seal fit?

It fits a 2.5 in shaft inside diameter and a 3.5 in housing outside diameter with a 0.438 in overall width.

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