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Transparent SKF 15635 shaft seal, 1.563 in ID, 2.502 in OD, .313 in wide

SKF

SKF 15635 CRWA1 NBR Shaft Seal 1.563 x 2.502 x .313 in

SKU CH-ZEDX-R79B4

Rotary shaft seal with nitrile rubber lips handles 10 psi and 3,300 RPM for oils, grease and fuels

  • ColorTransparent
  • Width5/16"
  • Seals rotating shafts up to 3 300 RPM
  • Nitrile rubber lips resist oil, grease, fuel and hot water
  • Dual-lip design with carbon-steel spring maintains contact
  • Acrylic-coated case protects against corrosion
  • Non-contact seal limits friction at 6.9 m/s surface speed

SKF 15635 CRWA1 Rotary Shaft Seal

This SKF rotary shaft seal suits maintenance teams and equipment builders who need a reliable lip seal for rotating shafts in industrial or automotive drivelines. The CRWA1 design handles a range of common lubricants and fuels. It is not for buyers who require a high-pressure sealing solution beyond the rated limit.

Critical dimensions and speed rating

The seal fits a 1.563 in shaft inside a 2.502 in bore with an overall width of .313 in. Twin nitrile rubber lips and a carbon steel spring operate up to 3,300 RPM and a maximum surface speed of 6.9 mps while withstanding 10 psi pressure.

Build integration and media compatibility

The acrylic-coated case presses into standard inch-dimension housings without special tools. The nitrile lips are compatible with mineral oils, greases, gasoline, diesel, light heating oil, animal and vegetable oils, and hot water, reducing the need to stock multiple seal types for different fluids.

Highlights

  • Seals rotating shafts up to 3 300 RPM
  • Nitrile rubber lips resist oil, grease, fuel and hot water
  • Dual-lip design with carbon-steel spring maintains contact
  • Acrylic-coated case protects against corrosion
  • Non-contact seal limits friction at 6.9 m/s surface speed

Specifications

BrandSKF
ColorTransparent
Width5/16"

Questions about this item

What does the 1.563 in inside diameter mean when I install this seal?

The 1.563 in inside diameter matches a shaft of that exact size so the two lips and spring can seal against it.

How does the 3,300 RPM limit affect what I can use this seal for?

The 3,300 RPM maximum rotational speed caps the shaft speed; above that the lip contact and 6.9 mps surface speed may overheat.

What bore and shaft dimensions do I need for this seal to fit?

You need a 1.563 in shaft and a 2.502 in housing bore with a 0.313 in wide groove for the acrylic-coated case.

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