SKF HMSA10V Radial Shaft Seal, 12 x 28 x 7mm

This is the SKF HMSA10 V Radial Shaft Seal (CR Seal), FKM, 12 mm and 55 mm Shaft.

The HMSA10 is an SKF CR Seal with a rubber outside diameter, a spring-loaded main sealing lip and a non-contacting auxiliary lip.

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. The HMSA10 range is for oil or grease lubricated applications with a circumferential speed up to 14 m/s and a maximum operating pressure of 0.03 MPa.

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

• Rubber outside diameter that seals in the housing, including a rough or split housing
• Beads on the outside diameter that help the seal hold in the bore and resist spring-back during installation
• Spring-loaded main sealing lip
• Non-contacting auxiliary lip
• Oil or grease lubricated applications
• FKM (fluoroelastomer, Viton) sealing material
• 2 sizes: 12 x 28 x 7mm, 55 x 68 x 8mm

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.

Product details