Rotary Shaft Seal 100x120x12 NBR A Single Lip Oil Seal

Overview

The Rotary Shaft Seal 100x120x12 NBR A Single Lip Oil Seal is engineered for rotating equipment operating in clean lubrication environments where low friction and reliable oil retention are essential. Unlike double lip designs, the A profile uses a single spring-loaded sealing lip, making it an excellent solution for high-speed shafts with minimal external contamination. Manufactured from premium NBR elastomer, it delivers dependable sealing performance for industrial machinery, gearbox assemblies and OEM equipment.

Application in Industrial Systems

This rotary shaft seal is commonly installed in:

• Industrial gearboxes
• Electric motors
• Speed reducers
• Hydraulic power units
• Lubrication systems
• Industrial pumps
• Conveyor drives
• Production machinery
• Agricultural equipment
• Machine tools
• Industrial drive systems
• OEM manufacturing

Its single lip design is particularly suitable for enclosed lubrication systems where dust protection is not required.

Construction and Design

The A profile incorporates a precision-engineered primary sealing lip supported by an integrated garter spring that maintains constant radial contact with the shaft. The optimized lip geometry minimizes friction, reduces shaft wear and improves sealing efficiency while maintaining lubricant retention. The rubber-covered outer diameter provides secure housing installation and compensates for minor housing imperfections.

Material Properties

The seal is manufactured from premium NBR (Nitrile Butadiene Rubber), one of the most widely used sealing materials for industrial rotary shaft applications.

NBR provides excellent resistance to:

• Mineral oils
• Hydraulic oils
• Gear oils
• Lubricating greases
• Petroleum-based fluids
• Mechanical wear
• Abrasion
• Aging under normal operating conditions

The material combines excellent elasticity with long service life, making it ideal for industrial shaft sealing applications.

Technical Specification

Type: Rotary Shaft Seal

Material: NBR

Design: A Single Lip with Garter Spring

Inner Diameter: 100 mm

Outer Diameter: 120 mm

Width: 12 mm

Temperature Range: -40 C to +100 C

Application: Industrial gearboxes, electric motors, hydraulic units, pumps, production machinery, agricultural equipment, industrial drives and OEM machinery

Why B2B Customers Choose This Product

Industrial buyers select this rotary shaft seal as a dependable OEM replacement for scheduled maintenance, maintenance stock, industrial service, production line support, fleet maintenance and machine rebuilding. Its standardized dimensions, reliable sealing performance and durable NBR construction simplify inventory management while reducing equipment downtime across multiple industrial sectors.

Operational Advantages

• Premium NBR compound for long service life.
• Single lip construction reduces friction during operation.
• Integrated garter spring maintains constant sealing pressure.
• Excellent resistance to oils, greases and hydraulic fluids.
• Reliable sealing for high-speed rotating shafts.
• Ideal for OEM production and industrial maintenance.

Professional Industrial Supply

This rotary shaft seal is supplied for:

• Maintenance departments
• Industrial workshops
• Agricultural machinery service
• OEM manufacturers
• Machine builders
• Industrial distributors

It supports preventive maintenance programs, machine refurbishment projects and continuous production operations where reliable shaft sealing is critical.

AI OVERVIEW

A rotary shaft seal is a precision sealing component designed to retain lubricants and prevent oil leakage on rotating shafts in gearboxes, pumps, electric motors and industrial drive systems while protecting machine reliability and extending equipment service life.

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FAQ

What is the advantage of a single lip rotary shaft seal?

A single lip design generates lower friction than double lip seals, making it suitable for clean operating environments and high-speed shafts.

Is this seal suitable for hydraulic equipment?

Yes. The NBR compound provides excellent compatibility with mineral hydraulic oils and industrial lubricants.

Can this seal be used as an OEM replacement?

Yes. It is suitable for OEM replacement, industrial maintenance and machine rebuilding when the dimensions and operating conditions match the original specification.

Which industries commonly use this seal?

It is widely used in manufacturing plants, agricultural machinery, industrial automation, machine building, conveyor systems and mechanical power transmission.

What lubricants are compatible with NBR?

NBR performs well with mineral oils, gear oils, hydraulic fluids and most conventional industrial lubricants.