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SKF 32344 shaft seal, transparent nitrile rubber ring, 3.25 x 4.003 x .375 in

SKF

SKF 32344 Shaft Seal 3.25 x 4.003 x .375 in CRW1 Nitrile Rubber

SKU CH-FD9K-8M79X

Rotary shaft seal with a 3.25 in inner diameter, 4.003 in outer diameter and .375 in width, rated for 10 psi and 210 °F

  • ColorTransparent
  • Width3/8"
  • Seals shafts up to 210 °F with nitrile rubber lip
  • Handles 10 psi pressure for reliable fluid containment
  • CRW1 design with carbon-steel spring ensures consistent lip contact
  • Fits 3.25 in ID and 4.003 in OD housings
  • Compatible with oils, fuels, greases and hot water

SKF 32344 Rotary Shaft Seal

The SKF 32344 is a CRW1-design rotary shaft seal built for inch-dimensioned equipment. It fits a 3.25 in inside diameter and a 4.003 in outside diameter with a .375 in overall width. The single lip uses nitrile rubber and a carbon steel spring to retain lubricants and exclude contaminants in engines and industrial machinery.

Thermals noise and power draw

The seal operates reliably up to 210 degrees F and handles surface speeds to 3,600 fpm without excess heat buildup. Nitrile rubber resists animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils. Acrylic case coating eases installation and protects the bore. Maximum pressure rating is 10 psi for low-pressure rotary applications.

Replaces worn CRW1 seals in inch bores

This part directly replaces a failed 3.25 x 4.003 x .375 in CRW1 seal when leakage or lip wear appears. The jump is worth it when the original seal hardens, cracks or loses spring tension after extended service. It is not for metric bores, high-pressure systems above 10 psi or temperatures exceeding 210 degrees F.

Highlights

  • Seals shafts up to 210 °F with nitrile rubber lip
  • Handles 10 psi pressure for reliable fluid containment
  • CRW1 design with carbon-steel spring ensures consistent lip contact
  • Fits 3.25 in ID and 4.003 in OD housings
  • Compatible with oils, fuels, greases and hot water

Specifications

BrandSKF
ColorTransparent
Width3/8"

Questions about this item

How do I install the SKF 32344 shaft seal and what step is often missed?

Press the seal squarely into the bore until the case sits flush; the step often missed is applying a light coat of compatible oil or grease to the nitrile lip and shaft before installation to prevent dry-start damage.

What maintenance or replacement will this CRW1 nitrile seal need over time?

The nitrile lip wears against the shaft and hardens with heat cycles; plan to replace the seal whenever the shaft is removed or at the first sign of weeping, since no relubrication point exists.

What is the first limit reached under sustained high-speed operation?

The 3,600 fpm surface-speed rating is reached before the 10 psi pressure or 210 °F temperature limits, so shaft speed is the governing constraint for continuous running.

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