SKF CRW1 R Radial Shaft Seal 0.875 x 1.874 x 0.25 in, NBR

The CRW1 is an SKF CR Seal with a metal outer case and a wave-profile sealing lip, for oil or grease lubricated applications.

An oil seal has two main parts: an outer cylindrical casing that is a press fit in the housing bore, and a sealing lip that runs on the shaft. The lip is what keeps oil or grease in and contamination out at the point where the shaft passes through the housing.

The sealing material is NBR (nitrile rubber). SKF describes its standard nitrile rubber as a general-purpose sealing lip material that resists most mineral oils and greases, normal fuels such as petrol and diesel, animal and vegetable oils and fats, and hot water, and that tolerates short-term dry running.

This is a clearance item and is sold as-is. No returns or exchanges apply. Please contact us if you require further details or wish to inspect the item prior to purchase

Where this product is used

• Gearboxes and speed reducers
• Pumps and motors
• Rollers and general rotating equipment
• Shaft penetrations in housings where lubricant must stay in

Features

• Metal outer case with an interference fit in the housing bore
• Wave-profile sealing lip
• Oil or grease lubricated applications
• NBR (nitrile rubber) sealing material
• 4 sizes: 0.875 x 1.874 x 0.25 in; 1.375 x 2.437 x 0.25 in; 1.375 x 2.686 x 0.5 in; 30 x 48 x 8 mm

Key specifications

Sizes

Selecting and fitting

Check the shaft diameter, housing bore diameter and seal width against your application before ordering, and use the dimensions in the sizes table above. The shaft surface the lip runs on must be clean and free from scoring. If the shaft is worn at the seal position, a shaft repair sleeve fixes this without replacing the shaft: SKF Speedi-Sleeve.

The dimensions above are catalogue values for reference. Contact AIMS to confirm a measurement if it is critical to your application.