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SKF 21101 rotary shaft seal, transparent nitrile rubber ring, 2.125 x 2.875 x .25 in

SKF

SKF 21101 HM14 Shaft Seal 2.125 x 2.875 x .25 in

SKU CH-DCT8-3VK6D

Rotary shaft seal with 2.125 in inside diameter, 2.875 in outside diameter and .25 in width for grease-lubricated agricultural machinery up to 884 RPM

  • ColorTransparent
  • Width1/4"
  • Reliable sealing at up to 10 psi pressure
  • Nitrile rubber lip handles oils, greases, fuel and hot water
  • HM14 design suits 2.125 in shaft and 2.875 in bore
  • Single-lip contact seal rated for 2,884 RPM maximum speed
  • Thin .25 in width fits compact engine assemblies

Shaft Seal for Grease-Lubricated Machinery

The SKF 21101 HM14 rotary shaft seal fits agricultural equipment and other grease-lubricated systems. It handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. The nitrile rubber lip and uncoated case suit standard industrial conditions. Designed for a maximum pressure of 10 psi and speeds up to 2,884 RPM.

Verify Shaft and Housing Dimensions Before Ordering

Confirm the shaft outside diameter is 2.125 in and the housing bore is 2.875 in. The seal width is 0.25 in and uses a single lip with contact seal design. No spring is fitted. Ensure the application runs within the 10 psi pressure limit and the rated rotational speed. The seal is transparent in colour.

Replaces Worn HM14 Seals in Identical Bores

This unit directly replaces a failed HM14 seal with the same inside diameter, outside diameter and width. The upgrade is worthwhile when the existing lip is hardened, leaking or the spring has lost tension. It restores sealing performance for the listed fluids without changing hardware. Not suitable for applications exceeding the pressure or speed ratings.

Highlights

  • Reliable sealing at up to 10 psi pressure
  • Nitrile rubber lip handles oils, greases, fuel and hot water
  • HM14 design suits 2.125 in shaft and 2.875 in bore
  • Single-lip contact seal rated for 2,884 RPM maximum speed
  • Thin .25 in width fits compact engine assemblies

Specifications

BrandSKF
ColorTransparent
Width1/4"

Questions about this item

What is included in the box and do I need to buy a spring or housing separately?

The box contains the single SKF 21101 shaft seal with its nitrile rubber lip and uncoated case; no spring is used in the HM14 design and no separate housing is required.

How do I choose between the listed dimensions when ordering this seal?

The part number 21101 corresponds to one fixed size — 2.125 in inside diameter, 2.875 in outside diameter and 0.25 in width — so no capacity or version choice is needed.

What does the 2884 RPM maximum rotational speed mean once the seal is installed in a grease-lubricated agricultural machine?

It indicates the highest shaft speed the nitrile lip can reliably handle while sealing grease, diesel, gasoline or mineral oil at up to 10 psi.

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