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SKF 12350 rotary shaft seal 1.25 x 1.687 x .313 in CRWA1 NBR

SKF

SKF 12350 Shaft Seal 1.25 x 1.687 x .313 in CRWA1 NBR

SKU CH-QQQT-VC7DH

Rotary shaft seal with 1.25 in inside diameter, 1.687 in outside diameter and 0.313 in width

  • 25 in bore fits standard shafts
  • 687 in OD seats securely in housing
  • .313 in width matches OEM specs
  • NBR lip resists oil, fuel and grease
  • Dual-lip design blocks contaminants at 3 600 RPM

SKF 12350 Rotary Shaft Seal

The SKF 12350 is a rotary shaft seal designed for retaining lubricants and excluding contaminants in rotating equipment. It features a CRWA1 design with an inside diameter of 1.25 in and an outside diameter of 1.687 in. The seal incorporates two nitrile rubber lips and a carbon steel spring for consistent radial force. This component suits maintenance and repair tasks on shafts requiring these exact dimensions.

Upgrade From Worn Single Lip Seals

This seal replaces worn or leaking original equipment seals where a dual lip arrangement improves exclusion of dirt and moisture. The jump is worthwhile when the existing seal shows leakage, lip hardening or spring fatigue. Its nitrile rubber material handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. Maximum pressure rating is 10 psi and maximum rotational speed is 3,600 RPM.

Suits Shafts With 1.25 Inch Diameter

The seal fits shafts measuring 1.25 in diameter with a 1.687 in bore and 0.313 in width. It suits applications operating within the stated speed and pressure limits using compatible fluids. Builders needing higher pressure capability, different lip materials or metric dimensions should look elsewhere. The acrylic coated case aids installation in standard housings.

Highlights

  • 25 in bore fits standard shafts
  • 687 in OD seats securely in housing
  • .313 in width matches OEM specs
  • NBR lip resists oil, fuel and grease
  • Dual-lip design blocks contaminants at 3 600 RPM

Specifications

BrandSKF

Questions about this item

Will the 1.25 in inside diameter and 1.687 in outside diameter match my shaft and housing?

The seal has an inside diameter of 1.25 in and an outside diameter of 1.687 in. Measure both the shaft and the bore before ordering to confirm the fit.

What is the correct way to press this CRWA1 seal in without damaging the NBR lips?

Use a flat driver that contacts only the metal case. Press the seal squarely until the case is flush with the housing face; never hammer directly on the rubber lips.

How often should I plan to replace a nitrile seal running at 3,600 RPM in mineral oil?

NBR lips typically last several thousand hours at 3,600 RPM in mineral oil. Inspect for leakage or hardening at each service interval and replace if wear is visible.

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