SKF Thermoplastic Elastomer Polyester Four-Lip Ring Seal, 140 mm ID, 187.5 mm OD

This ring seal is a four-lip radial shaft sealing element designed to prevent fluid leakage and exclude contaminants in rotating equipment. It is intended for incorporation into mechanical assemblies where a compact, resilient seal is required. The unit is supplied in black and is compatible with installations needing reliable lip contact and dynamic sealing performance.

• Polyester reinforcement improves dimensional stability under load
• Four-lip profile offers enhanced particle exclusion and fluid retention
• Suitable for radial shaft sealing applications with tight clearance requirements
• Robust construction supports repeated shaft rotation and axial movement

• Suitable for sealing rotary shafts in automation actuators and gearboxes
• Ideal for use in electrical motor housings and generators
• Used with shaft-driven pumps handling lubricants and light oils
• Can be used for sealing bearing housings in mechanical drives

The seal combines a thermoplastic elastomer elastomeric section with a polyester component to balance elasticity with structural integrity.

Multiple lips create sequential barriers that reduce ingress of dust and liquids while maintaining contact pressure on the shaft surface.

The design tolerates limited axial displacement during rotation due to the elastomeric lip flexibility and reinforced body support.

Polyester offers resistance to deformation under operational stresses, helping preserve sealing geometry over extended service periods.