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SKF 29218 rotary shaft seal, transparent nitrile rubber, 3/8 inch wide

SKF

SKF 29218 Shaft Seal 2-15/16 x 3-39/64 x 3/8 in CRW1 NBR

SKU CH-GBAT-DSXAK

Rotary shaft seal with nitrile rubber lip rated for 2,400 RPM and 10 psi maximum pressure

  • ColorTransparent
  • Width3/8"
  • Reliable sealing for rotating shafts up to 2,400 RPM
  • Nitrile rubber lip handles oils, fuels, greases and hot water
  • Carbon-steel spring maintains consistent lip pressure at 10 psi
  • Precise 2.938 in ID and 3.623 in OD ensure correct fit
  • Acrylic-coated case resists corrosion in harsh environments

SKF 29218 Rotary Shaft Seal

This SKF rotary shaft seal uses a CRW1 design with a nitrile rubber lip and carbon steel spring. It fits an inside diameter of 2.938 inches and an outside diameter of 3.623 inches. The overall width is .375 inches and the case has an acrylic coating. It is designed for rotary motion sealing applications.

Check shaft dimensions and fluid compatibility

Verify that the shaft diameter matches the 2.938 inch inside diameter and the housing bore matches the 3.623 inch outside diameter. Confirm the operating fluid is among animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil, or mineral oils. Ensure the surface speed does not exceed 9.46 mps and rotational speed stays below 2,400 RPM. The maximum pressure rating is 10 psi.

Replaces worn seals in compatible housings

This seal replaces a worn or leaking rotary shaft seal with the same CRW1 dimensions and nitrile rubber lip material. The upgrade is worth it when the original seal has hardened, lost spring tension, or shows lip wear causing leaks. It restores sealing performance for the listed fluids and speed limits in the existing housing.

Highlights

  • Reliable sealing for rotating shafts up to 2,400 RPM
  • Nitrile rubber lip handles oils, fuels, greases and hot water
  • Carbon-steel spring maintains consistent lip pressure at 10 psi
  • Precise 2.938 in ID and 3.623 in OD ensure correct fit
  • Acrylic-coated case resists corrosion in harsh environments

Specifications

BrandSKF
ColorTransparent
Width3/8"

Questions about this item

What does the SKF 29218 shaft seal include and is any installation tool or additional component sold separately?

The package contains the single CRW1 rotary shaft seal with nitrile rubber lip, carbon steel spring and acrylic-coated case. No installation tool, lubricant or mating hardware is supplied; these must be sourced separately.

How do I confirm the 29218 is the correct size for my shaft and housing?

Match the seal to a shaft diameter of 2.938 in and a housing bore of 3.623 in with a 0.375 in groove width; the seal is designed to the inch system of measurement.

What does the 2,400 RPM speed rating mean for actual service life on my equipment?

At the maximum 2,400 RPM the lip surface speed reaches 9.46 m/s; running continuously at or near this limit with the rated 10 psi pressure will accelerate lip wear, so lower speeds and clean lubrication extend service intervals.

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