SKF Nitrile Rubber (NBR) Seal, 20 mm ID, 47 mm OD, 7 mm

This radial shaft seal provides a pressure-retaining Interface between rotating and stationary components in machinery, preventing loss of oil or grease while accommodating minor shaft misalignment. It is designed with a rubber outer diameter and a single elastomeric sealing lip reinforced by a garter spring to maintain consistent radial contact under dynamic conditions.

• Operates up to 100°C with short peaks to 120°C for thermal resilience
• Permissible circumferential speed 4.12 m/s allowing moderate rpm operation
• Rotational capability to 3,960 r/min for typical industrial drives
• Rubber outside diameter for secure housing fit and vibration damping
• Garter spring maintains radial load for sustained sealing pressure
• Elastomer lip resists oil and grease to reduce leakage risk

• Suitable for pumps requiring axial sealing in oil circuits
• Ideal for gearboxes with rotating shafts in automation systems
• Used with electric motors where shaft sealing is essential
• Can be used for rotating assemblies in mechanical drives
• Used for maintenance replacement in metric machinery components

It is intended for shafts with a 20mm diameter and fits into housings sized for a 47mm bore.

The sealing lip is MADE from NBR nitrile rubber which performs well with oils and greases and across the stated temperature range.

The combination of a flexible elastomer lip and a garter spring permits the lip to follow minor shaft run-out while keeping contact pressure.

The seal tolerates a pressure differential of 0.03 N/mm, so installations should avoid sustained high-pressure differentials and ensure correct orientation.