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Transparent SKF rotary shaft seal HM1 R, 2.75 in ID, 3.25 in OD, .313 in wide, single nitrile lip

SKF

SKF 27225 Shaft Seal HM1 R 2.75 x 3.25 x .313 in

SKU CH-XNVV-J8QQ1

Rotary shaft seal with 2.75 in inside diameter, 3.25 in outside diameter and .313 in width for grease-lubricated agricultural machinery

  • ColorTransparent
  • Width5/16"
  • Seals shafts reliably with nitrile rubber lip
  • Fits 2.75 in bore and 3.25 in housing
  • Withstands 3 psi in grease-lubricated machinery
  • Operates up to 2,513 RPM with single-lip design
  • Resists animal and vegetable oils, diesel, gasoline, greases, hot water, mineral oils

SKF 27225 shaft seal for grease-lubricated machinery

This SKF 27225 rotary shaft seal uses an HM1 R design with a single nitrile rubber lip. It fits a 2.75 in inside diameter and a 3.25 in outside diameter with a .313 in overall width. The uncoated case suits agricultural equipment running on grease, animal and vegetable oils, diesel, gasoline, hot water, light heating oil or mineral oils.

Suits shafts needing a 2.75 in ID seal

Mechanics sealing grease-lubricated shafts at moderate speeds will find this seal matches the stated dimensions and fluid compatibility. It is not for buyers who need a spring-energised lip, a coated case, higher pressure tolerance above 3 psi, or a different inside or outside diameter.

Press-fit installation into a 3.25 in bore

The seal installs by pressing the uncoated metal case into a 3.25 in housing bore until flush. Common issues include damaging the nitrile lip during insertion, misaligning the seal so it leaks, or using it above the 2,513 RPM limit where the single lip can overheat and fail.

Highlights

  • Seals shafts reliably with nitrile rubber lip
  • Fits 2.75 in bore and 3.25 in housing
  • Withstands 3 psi in grease-lubricated machinery
  • Operates up to 2,513 RPM with single-lip design
  • Resists animal and vegetable oils, diesel, gasoline, greases, hot water, mineral oils

Specifications

BrandSKF
ColorTransparent
Width5/16"

Questions about this item

What shaft diameter does the 2.75 in inside diameter of the SKF 27225 seal fit?

The 2.75 in inside diameter is designed to fit a shaft with a matching 2.75 in diameter for proper sealing contact.

Will the 3.25 in outside diameter of this seal install into a housing bore sized for a smaller seal?

No, the 3.25 in outside diameter requires a housing bore machined to that exact dimension; a smaller bore will prevent correct installation.

How can I confirm the SKF 27225 seal is operating correctly after installation?

Verify no fluid leakage at the lip, ensure the shaft rotates smoothly up to 2 513 RPM, and check that the seal remains seated in the housing bore.

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