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Transparent rubber rotary shaft seal with metal spring visible inside, SKF 13534, 1.375 by 1.874 by .25 inch

SKF

SKF 13534 Rotary Shaft Seal 1.375 x 1.874 x .25 in CRW1 NBR

SKU CH-4A8N-15YCK

Rotary shaft seal with 1.375 in inside diameter, 1.874 in outside diameter and 0.25 in width for oils, greases and fuels up to 3,480 RPM

  • ColorTransparent
  • SKF 13534 rotary shaft seal for precise fit
  • Nitrile rubber lip resists oil, fuel and grease
  • CRW1 design handles up to 10 psi pressure
  • Carbon-steel spring maintains lip contact at 3 480 RPM
  • Acrylic-coated case protects against corrosion in harsh fluids

Rotary Shaft Seal 13534

The SKF 13534 is a rotary shaft seal designed for retaining lubricants and excluding contaminants in rotating equipment. Its CRW1 design code indicates a single-lip configuration with a carbon steel garter spring that maintains consistent radial pressure against the shaft surface.

Nitrile Lip and Acrylic Coating

The sealing lip uses nitrile rubber (NBR) for compatibility with mineral oils, greases, gasoline, diesel, animal and vegetable oils, light heating oil and hot water. An acrylic coating on the metal case assists installation and helps prevent bore leakage.

Suits Standard Inch Shafts

This seal fits a 1.375 inch shaft diameter within a 1.874 inch bore and operates up to 3,480 RPM with a 10 psi pressure limit. It is not suited for applications exceeding these speed or pressure values or for fluids outside the listed compatibility range.

Highlights

  • SKF 13534 rotary shaft seal for precise fit
  • Nitrile rubber lip resists oil, fuel and grease
  • CRW1 design handles up to 10 psi pressure
  • Carbon-steel spring maintains lip contact at 3 480 RPM
  • Acrylic-coated case protects against corrosion in harsh fluids

Specifications

BrandSKF
ColorTransparent

Questions about this item

When will the nitrile rubber lip on the CRW1 seal need replacement?

The nitrile rubber lip wears with shaft rotation and fluid exposure; plan inspection at each major service interval and replace if leakage or hardening appears.

What rotational speed limit applies to the 1.375 in shaft seal during continuous operation?

Maximum rated speed is 3,480 RPM; sustained operation above this limit accelerates lip wear and heat buildup.

How much heat and power loss should I expect from the 0.25 in wide seal running all day?

At up to 6.38 m/s surface speed the seal generates modest frictional heat; the single nitrile lip and carbon-steel spring keep power loss low for continuous duty.

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