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Transparent rubber shaft seal with metal spring visible inside, 1.375 in inner diameter

SKF

SKF 13865 Rotary Shaft Seal CRW1 NBR 1.375 in ID 2.502 in OD

SKU CH-QM5V-8X73J

Rotary shaft seal with nitrile lip rated for 10 psi and 3,480 RPM in oil and grease applications

  • ColorTransparent
  • Width5/16"
  • Reliable sealing for rotating shafts with 1.375 in inside diameter
  • Resists common automotive fluids including oil, gasoline and diesel
  • Withstands up to 10 psi pressure in service
  • Operates at speeds up to 3,480 RPM with 6.38 m/s surface speed
  • Nitrile rubber lip and carbon-steel spring deliver durable contact sealing

Seal dimensions and material

This SKF rotary shaft seal carries part number 13865 and is built to the CRW1 design. It fits a 1.375 in shaft and a 2.502 in housing bore with an overall width of .313 in. The lip is made from nitrile rubber and the spring uses carbon steel.

Intended fluid and speed range

The seal handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. It is rated for a maximum rotational speed of 3, 480 RPM and a maximum surface speed of 6.38 mps. Buyers who need higher pressure capability or a different fluid compatibility should look at other sealing solutions.

Pressure limit

Maximum pressure is limited to 10 psi, which determines whether this seal suits the application. Exceeding that pressure will compromise the contact lip and lead to leakage.

Highlights

  • Reliable sealing for rotating shafts with 1.375 in inside diameter
  • Resists common automotive fluids including oil, gasoline and diesel
  • Withstands up to 10 psi pressure in service
  • Operates at speeds up to 3,480 RPM with 6.38 m/s surface speed
  • Nitrile rubber lip and carbon-steel spring deliver durable contact sealing

Specifications

BrandSKF
ColorTransparent
Width5/16"

Questions about this item

What bore diameter and housing depth does the 1.375 in ID by 2.502 in OD seal require?

The seal fits a 1.375 in shaft and a 2.502 in bore with a 0.313 in overall width.

How do you press the CRW1 seal in without damaging the nitrile lip or carbon-steel spring?

Use a flat driver that contacts only the metal case, press squarely until the case bottoms out, and never hammer the lip.

When should the NBR lip be replaced given the 10 psi and 3,480 RPM limits?

Replace at first sign of leakage, lip hardening, or groove wear on the shaft; inspect at every oil change.

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