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Small transparent rubber shaft seal ring with thin profile

SKF

SKF 4913 Shaft Seal .5 x .75 x .125 in HMS1 Nitrile Rubber

SKU CH-VHVJ-YNQZY

Rotary shaft seal with .5 in inside diameter, .75 in outside diameter, .125 in width, single nitrile rubber lip rated to 7 psi and 999 mps surface speed

  • ColorTransparent
  • Seals 0.5 in shafts with 0.125 in width
  • Single nitrile lip handles 7 psi pressure
  • HMS1 design runs at 999 m/s surface speed
  • 75 in OD fits standard housings
  • SKF 4913 quality for engine applications

SKF 4913 Rotary Shaft Seal

This SKF 4913 rotary shaft seal fits a 0.5 in shaft inside a 0.75 in bore with a 0.125 in overall width. The single-lip HMS1 design uses nitrile rubber for the sealing element and operates at pressures up to 7 psi. It is a new component for engine-related maintenance.

Mechanics repairing rotating shafts at low pressure

The seal suits shafts that run at surface speeds up to 999 mps where a single nitrile lip and 7 psi pressure limit are acceptable. It is not for applications that need higher pressure resistance, multiple sealing lips, a different lip material or a larger cross-section than the stated dimensions.

0.5 in inside diameter by 0.75 in outside diameter

The critical specification is the 0.5 in inside diameter paired with the 0.75 in outside diameter and 0.125 in width. Match these three dimensions exactly to the shaft, housing and groove before ordering.

Highlights

  • Seals 0.5 in shafts with 0.125 in width
  • Single nitrile lip handles 7 psi pressure
  • HMS1 design runs at 999 m/s surface speed
  • 75 in OD fits standard housings
  • SKF 4913 quality for engine applications

Specifications

BrandSKF
ColorTransparent

Questions about this item

What shaft diameter must I already have for this .5 in inside-diameter seal to fit?

The seal is built for a 0.5 in shaft, so the shaft you are sealing must measure .5 in at the sealing surface.

Will this single-lip nitrile seal rated for 7 psi and 999 mps work on an older shaft that shows light wear?

Light wear is usually acceptable if the shaft surface is smooth and free of deep grooves; the nitrile lip can conform to minor imperfections while maintaining its pressure and speed limits.

After pressing the .75 in outside-diameter case into the bore, how can I confirm the .125 in wide seal is seated and functioning?

Check that the case sits flush with the bore face, the lip contacts the shaft evenly all around, and no oil leaks appear when the shaft rotates at operating speed.

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