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Transparent rotary shaft seal with single lip and metal spring

SKF

SKF 18025 Rotary Shaft Seal 1.813 in ID 2.279 in OD 0.313 in Width NBR CRW1

SKU CH-QCVY-4TDP8

Rotary shaft seal with 1.813 in inside diameter, 2.279 in outside diameter, 0.313 in width and nitrile rubber lip rated for 10 psi and 3,120 RPM

  • ColorTransparent
  • Width5/16"
  • Reliable sealing at up to 10 psi pressure
  • NBR lip resists oils, fuels, greases and hot water
  • Single-lip CRW1 design rated for 3,120 RPM
  • Carbon-steel spring maintains consistent lip contact
  • Fits 1.813 in shaft with 2.279 in bore and .313 in width

SKF 18025 Rotary Shaft Seal

The SKF 18025 is a CRW1 rotary shaft seal with a 1.813 in inside diameter and a 2.279 in outside diameter. Its single lip is made from nitrile rubber and is designed to seal fluids such as mineral oils, diesel, gasoline, greases, hot water, light heating oil, and animal or vegetable oils.

For standard oil and grease sealing up to 3 120 RPM

This seal suits applications requiring a 10 psi pressure limit and a maximum surface speed of 7.5 mps. It is not intended for high-pressure systems, vacuum service, or media that attack nitrile rubber, and it will not fit shafts or bores with different diameters.

Press-fit installation into a prepared bore

The metal case has an acrylic coating to aid assembly and resist corrosion. A carbon-steel garter spring maintains lip tension. The bore must be clean, free of burrs, and chamfered; damage to the lip during fitting is the most common cause of early leakage.

Highlights

  • Reliable sealing at up to 10 psi pressure
  • NBR lip resists oils, fuels, greases and hot water
  • Single-lip CRW1 design rated for 3,120 RPM
  • Carbon-steel spring maintains consistent lip contact
  • Fits 1.813 in shaft with 2.279 in bore and .313 in width

Specifications

BrandSKF
ColorTransparent
Width5/16"

Questions about this item

What shaft diameter must I already have for the 1.813 in inside diameter seal to fit?

The seal is designed for a shaft with a 1.813 in diameter, so that exact size must be present for proper installation.

Will the 10 psi maximum pressure rating work with my existing low-pressure lubrication system?

Yes, the seal handles up to 10 psi, making it compatible with typical low-pressure oil or grease systems.

How can I confirm the CRW1 design is sealing correctly after installation?

Check for zero fluid leakage at the lip and verify the shaft rotates freely up to 3,120 RPM without overheating.

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