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SKF 16246 shaft seal transparent nitrile rubber ring

SKF

SKF 16246 Shaft Seal 1.625 x 2.502 x .313 in CRWA1 NBR

SKU CH-QWGN-3KNBT

Rotary shaft seal with nitrile rubber lips, 1.625 in inner diameter and 0.313 in width, rated for 10 psi and 3,240 RPM

  • ColorTransparent
  • Reliable sealing for 1.625 in shafts with 2.502 in housing
  • Nitrile rubber lips handle oils, fuels, greases and hot water
  • Twin-lip design with carbon-steel spring maintains contact under pressure
  • Acrylic-coated case resists corrosion during installation and service
  • Rated for 3,240 RPM and 7.06 m/s surface speed

SKF 16246 Rotary Shaft Seal

The SKF 16246 is a CRWA1-design rotary shaft seal built for automotive and industrial engines. It suits technicians and maintenance teams who need a reliable lip seal for rotating shafts in equipment handling mineral oils, diesel, gasoline, greases, hot water, light heating oil, and animal or vegetable oils.

Sealing Performance Under Continuous Operation

The double-lip NBR sealing element with a carbon-steel spring maintains contact pressure up to 10 psi and handles surface speeds of 7.06 mps at 3,240 RPM. The acrylic-coated case resists the listed fluids while the nitrile lips retain elasticity during sustained rotation, limiting leakage and contaminant ingress over long duty cycles.

Press-Fit Installation and Common Pitfalls

Install by pressing the 2.502 in outside diameter evenly into the housing bore until the 0.313 in wide case seats fully on the 1.625 in shaft. Misalignment, cocked entry, or a rough shaft surface will damage the lips and cause immediate leaks; always use a proper driver and verify shaft finish before assembly.

Highlights

  • Reliable sealing for 1.625 in shafts with 2.502 in housing
  • Nitrile rubber lips handle oils, fuels, greases and hot water
  • Twin-lip design with carbon-steel spring maintains contact under pressure
  • Acrylic-coated case resists corrosion during installation and service
  • Rated for 3,240 RPM and 7.06 m/s surface speed

Specifications

BrandSKF
ColorTransparent

Questions about this item

How much heat and power draw should I expect from the SKF 16246 shaft seal running continuously at 3,240 RPM?

As a passive elastomer component, the seal generates no electrical load; frictional heat at the rated 7.06 m/s surface speed is managed by the fluid film and remains within normal operating limits for NBR material.

What shaft and housing dimensions must already be in place for the 1.625 in ID and 2.502 in OD seal to install correctly?

The seal requires a shaft diameter of 1.625 in and a housing bore of 2.502 in with a 0.313 in groove width; both surfaces must meet standard roughness and chamfer specs for CRWA1 profile retention.

Will the NBR lip material and 10 psi pressure rating hold up if I reuse an older shaft that has minor groove wear?

NBR tolerates the listed fluids and 10 psi, but the dual-lip CRWA1 design relies on a smooth shaft finish; noticeable groove wear can accelerate lip wear and reduce sealing life.

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