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Transparent rotary shaft seal with single lip and metal case, 1.375 by 1.874 by .25 inches

SKF

SKF 13548 HM14 Shaft Seal 1.375 x 1.874 x .25 in NBR

SKU CH-RS59-XW2M6

Rotary shaft seal with 1.375 in bore, 1.874 in OD and 0.25 in width for grease-lubricated farm machinery

  • Product colorTransparent
  • Reliable sealing for grease-lubricated agricultural machinery
  • Nitrile rubber lip handles animal and vegetable oils, diesel, gasoline, greases, hot water, mineral oils
  • HM14 design with single lip operates up to 3,489 RPM
  • Precise 1.375 in inside diameter and 1.874 in outside diameter
  • Low 10 psi pressure rating suits non-pressurised applications

Fits 1-3/8 inch shafts

This SKF 13548 rotary shaft seal suits agricultural machinery running on grease lubrication. The HM14 design handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. A single nitrile rubber lip with no spring keeps fluids in and contaminants out at low pressure. It is made for inch-dimensioned equipment that turns at moderate speed.

Mechanics sealing low-pressure grease systems

The 10 psi pressure limit and 3,489 RPM ceiling rule out high-pressure hydraulics, high-speed spindles or pump shafts that exceed either figure. Builders needing dual-lip protection, a spring-loaded lip or a metal case coating should select a different profile. This seal also does not fit metric shafts or bores that require ISO dimensions.

1.375 in inside diameter decides fit

The seal only works when the shaft measures exactly 1.375 inches and the housing bore measures 1.874 inches with a 0.25 inch width pocket. Any other shaft size, bore size or groove width will leak or fail to seat. Verify both diameters and the width before ordering.

How it compares

Measured against everything we stock in Engine Service & Diagnostic Tools, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 92% of the 1,113 comparable items (median $19.99).

Specifications

Product
Brand nameSKF
Product colorTransparent

Questions about this item

What shaft diameter does the 1.375 in inside diameter of this HM14 seal fit?

The seal fits a shaft with a 1.375 in outside diameter so the lip can contact and seal against it.

Can this NBR lip seal handle the same speeds as the old felt seal I am replacing?

This seal is rated for up to 3,489 RPM which is well above typical felt-seal limits.

How do I confirm the seal is seated correctly after pressing it into the 1.874 in bore?

The outer face should sit flush with the housing and the spring-loaded lip must face the fluid side.

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