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SKF 11124 rotary shaft seal, 1.125 in ID, 1.624 in OD, .25 in wide, black nitrile rubber with metal case and spring

SKF

SKF 11124 Shaft Seal 1.125 in ID 1.624 in OD 0.25 in CRWA1 NBR

SKU CH-KACZ-BEJ7J

Rotary shaft seal with 1.125 in ID, 1.624 in OD, 0.25 in width, dual NBR lips and carbon-steel spring for oils, greases and fuels up to 10 psi and 3,720 RPM

  • Designed for 3,720 RPM rotary shafts
  • Nitrile rubber lips resist oil, fuel and grease
  • Dual-lip CRWA1 design seals at 10 psi max
  • Acrylic-coated case protects against corrosion
  • Fits 1.125 in ID and 1.624 in OD housings

SKF 11124 Rotary Shaft Seal

The SKF 11124 is a CRWA1-design rotary shaft seal built for a 1.125 in shaft and a 1.624 in bore. Its nitrile rubber lips and carbon-steel garter spring suit automotive and light-industrial drives that see oil, fuel, grease or hot water. Two sealing lips and an acrylic-coated case give reliable retention in the listed fluids.

Speed and pressure envelope

Continuous operation is rated to 3,720 RPM with a maximum surface speed of 5.57 mps. The seal handles only 10 psi differential, so it fits low-pressure splash or gravity-fed housings but not pressurised pump chambers. Buyers who need higher pressure capability or faster surface speeds must select a different profile.

Replaces worn CRWA1 seals

This part directly replaces a failed CRWA1 seal of the same inch dimensions and lip material. The jump is worthwhile when the old lip shows hardening, grooving or leakage at the shaft. It does not upgrade a single-lip design or a different case coating; installers must match the original design code and fluid compatibility.

Highlights

  • Designed for 3,720 RPM rotary shafts
  • Nitrile rubber lips resist oil, fuel and grease
  • Dual-lip CRWA1 design seals at 10 psi max
  • Acrylic-coated case protects against corrosion
  • Fits 1.125 in ID and 1.624 in OD housings

Specifications

BrandSKF

Questions about this item

Should I choose the 1.125 in ID version or a different size for my shaft?

Select the 1.125 in inside diameter only if your shaft measures exactly 1.125 in; the seal also requires a 1.624 in bore and 0.25 in width to match the housing.

What does the 3,720 RPM rating mean once the seal is installed?

It is the maximum rotational speed the CRWA1 design can sustain; running the shaft faster than 3,720 RPM risks lip wear and leakage.

How does the 10 psi pressure limit affect what fluids I can seal?

The seal handles up to 10 psi, so it suits low-pressure lubrication and splash duties with oil, grease, diesel, gasoline or hot water but not pressurised hydraulic systems.

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