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Transparent rotary shaft seal with carbon steel spring, 2.313 by 3.751 by .5 inches

SKF

SKF 23277 Shaft Seal CRW1 NBR 2.313 x 3.751 x .5 in

SKU CH-2E4X-J2B7A

Rotary shaft seal with 2.313 in inside diameter, 3.751 in outside diameter, .5 in width, nitrile rubber lip, carbon steel spring, rated for 10 psi and 2,760 RPM

  • ColorTransparent
  • SKF shaft seal fits 2.313 in shafts precisely
  • NBR lip resists oils, fuels, water and greases
  • Single-lip CRW1 design seals at 10 psi max
  • Carbon-steel spring maintains lip contact up to 2760 RPM
  • Acrylic-coated case protects against corrosion in harsh environments

Engine Tools Shaft Seal 23277

The SKF 23277 is a rotary shaft seal designed for engine applications requiring reliable fluid containment. It suits mechanics and technicians servicing equipment where a single-lip nitrile rubber seal meets the specification. The CRW1 design handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil, and mineral oils.

Upgrade From Worn Single-Lip Seals

This seal replaces leaking or hardened original equipment seals with identical 2.313 in inside diameter, 3.751 in outside diameter, and 0.5 in width dimensions. The jump is worth it when the original lip material has degraded from heat or chemical exposure and the 2,760 RPM maximum rotational speed matches the operating conditions. Buyers needing higher pressure ratings above 10 psi or dual-lip contamination exclusion should verify alternative designs.

Press-Fit Installation With Standard Tools

Installation uses a standard seal driver or socket matching the 3.751 in outside diameter to press the acrylic-coated case into the housing bore. The carbon steel garter spring seats automatically during insertion. What usually goes wrong is damaging the nitrile lip on sharp keyways or splines without a protective sleeve, or cocking the seal in an out-of-round bore which causes immediate leakage.

Highlights

  • SKF shaft seal fits 2.313 in shafts precisely
  • NBR lip resists oils, fuels, water and greases
  • Single-lip CRW1 design seals at 10 psi max
  • Carbon-steel spring maintains lip contact up to 2760 RPM
  • Acrylic-coated case protects against corrosion in harsh environments

Specifications

BrandSKF
ColorTransparent

Questions about this item

What bore and shaft diameters does the 23277 seal fit?

The seal fits a 2.313 in shaft and a 3.751 in bore with a 0.5 in overall width.

How do I install this CRW1 seal without damaging the nitrile lip?

Lubricate the lip, use a flat driver that contacts only the metal case, and press squarely until the case sits flush — do not hammer the lip.

When should I replace this seal based on its speed and pressure limits?

Replace if the shaft exceeds 2,760 RPM or 8.49 m/s surface speed, if pressure rises above 10 psi, or if leakage appears.

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