Applications

The Simrit 180x220x16 B2 NBR rotary shaft seal is designed for sealing rotating shafts in industrial and automotive systems. It provides reliable protection against oil, grease, hydraulic fluids, and contaminants in engines, gearboxes, pumps, transmissions, agricultural machinery, and heavy-duty mechanical equipment. As a single lip (SC / B2) oil seal, it is suitable for applications where primary sealing is required without an integrated dust exclusion lip.

Advantages

This shaft seal features a metal-reinforced outer casing for structural stability and precise housing fit. The sealing lip is made from NBR (Nitrile Butadiene Rubber), offering excellent resistance to oils, lubricants, and fuel mixtures commonly used in industrial machinery. The spiral tension spring maintains constant radial pressure on the shaft surface, ensuring long-term sealing efficiency under dynamic operating conditions. The single-lip construction minimizes friction and heat buildup, supporting stable rotation and extended service life.

Technical Data

• Type: Rotary Oil Seal, Single Lip (SC / B2 design)
• Dimensions: 180 x 220 x 16 mm
• Material: NBR (Nitrile Rubber)
• Outer Structure: Metal-cased reinforcement
• Function: Sealing rotating shafts against oils, greases, and fluids
• Application: Industrial drives, mechanical transmissions, hydraulic systems

Main Description

The Simrit 180x220x16 B2 NBR rotary shaft seal is a precision-engineered component designed for high-performance shaft sealing in rotating machinery. Manufactured with a metal-reinforced outer structure, it ensures secure and vibration-resistant seating in the housing bore, even under heavy load conditions. The sealing lip is produced from NBR (Nitrile Butadiene Rubber), a widely used elastomer in industrial sealing due to its balance of elasticity, mechanical strength, and resistance to oils, lubricants, grease, and hydraulic fluids.

As a single lip (SC / B2) oil seal, it is optimized for applications where effective fluid retention is required without the need for additional external dust protection. The integrated spiral tension spring applies constant radial pressure, maintaining contact with the shaft surface over long service durations. This stable sealing interface supports high durability across varying temperatures, rotational speeds, and lubrication conditions.

Used in industrial machinery, automotive systems, gearboxes, electric motors, agricultural equipment, pumps, and power transmission assemblies, this rotary seal ensures reliable operation and prevents leakage that can lead to component wear, contamination, or equipment downtime. Its design and material properties make it especially suitable for continuous industrial use and high-duty mechanical environments.

FAQ

Q1: What is the difference between a single lip and double lip shaft seal?
A single lip seal (SC/B2) focuses on fluid retention. A double lip seal (TC) adds an external dust lip for contamination protection.

Q2: When should NBR shaft seals be used?
NBR is suitable for applications involving oils and grease at moderate temperatures and speeds.

Q3: How do I confirm correct seal size?
Match seal dimensions (ID x OD x width) to the shaft diameter and housing bore as specified by equipment tolerances.

Q4: Can this seal be used in high-temperature environments?
NBR supports standard industrial temperature ranges; for elevated temperatures, FKM/FPM seals are recommended.