SKF HMSA25V Radial Shaft Seal

The HMSA25 is a CR Seal radial shaft seal supplied by SKF.

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 FKM (fluoroelastomer), also sold as Viton. Check that the FKM material suits the lubricant and the operating temperature of your application before ordering. This is a clearance item and is sold as-is.

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

• Radial shaft seal for oil or grease lubricated applications
• FKM (fluoroelastomer, Viton) sealing material
• 1 size: 2.75 x 3.876 x 0.591"
• Style: V

Key specifications

Choosing the right option

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.