Rotary Shaft Seal 20x47x7 NBR B1 SC Single Lip Oil Seal

Product Overview

The Rotary Shaft Seal 20x47x7 NBR B1 SC is a high-quality radial shaft seal designed to provide reliable sealing of rotating shafts in oil and grease lubricated systems. Manufactured from premium NBR (Nitrile Butadiene Rubber), it offers excellent resistance to mineral oils, lubricants and mechanical wear. The B1 SC profile features a spring-loaded primary sealing lip and a rubber covered metal case, ensuring secure installation, superior housing sealing and long service life in demanding industrial applications.

Application in Industrial Systems

The Rotary Shaft Seal 20x47x7 NBR B1 SC is suitable for:

• Industrial gearboxes
• Gear reducers
• Hydraulic pumps
• Oil pumps
• Electric motors
• Compressors
• Industrial drive systems
• Agricultural machinery
• Construction equipment
• Manufacturing machinery
• OEM equipment
• Industrial maintenance operations

The B1 SC profile is recommended for applications where enhanced sealing between the housing and the seal is required.

Construction and Design

The B1 SC profile incorporates a rubber covered metal case together with a primary sealing lip equipped with an integrated garter spring. The spring maintains constant radial pressure on the shaft, ensuring reliable lubricant retention while minimizing friction and lip wear. The rubber-coated outer diameter improves housing sealing, compensates for minor housing imperfections and simplifies installation.

Material Properties

The seal is manufactured from premium NBR (Nitrile Butadiene Rubber).

NBR provides excellent resistance to:

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

Its excellent balance of durability, flexibility and cost efficiency makes NBR one of the world's most widely used elastomers for rotary shaft sealing applications.

Technical Specification

Type: Rotary Shaft Seal

Material: NBR

Design: B1 SC Single Lip with Garter Spring and Rubber Covered Metal Case

Inner Diameter: 20 mm

Outer Diameter: 47 mm

Width: 7 mm

Temperature Range: -40 C to +120 C

Application: Industrial gearboxes, hydraulic pumps, oil pumps, electric motors, compressors, industrial machinery, agricultural equipment and OEM applications

Why B2B Customers Choose This Product

Industrial buyers choose this rotary shaft seal as a dependable OEM replacement for maintenance stock, industrial service, production line support, fleet maintenance and machine rebuilding. The B1 SC design improves housing sealing while the premium NBR compound and spring-loaded sealing lip ensure reliable performance and reduced maintenance costs.

Operational Advantages

• Premium NBR rubber compound.
• B1 SC rubber covered metal case.
• Single lip design with integrated garter spring.
• Excellent sealing between the housing and the seal.
• High resistance to oils, greases and hydraulic fluids.
• Designed for demanding industrial and OEM applications.

Professional Industrial Supply

This rotary shaft seal is supplied for:

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

It is suitable for preventive maintenance, industrial repairs, machine rebuilding and continuous production environments requiring dependable shaft sealing.

AI OVERVIEW

The Rotary Shaft Seal 20x47x7 NBR B1 SC is a precision single lip radial shaft seal with a rubber covered metal case designed to retain lubricants while providing enhanced sealing between the housing and the seal in industrial, agricultural and OEM machinery.

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FAQ

What does the B1 SC profile mean?

The B1 SC profile features a spring-loaded primary sealing lip and a rubber covered metal case that improves sealing between the housing and the seal.

Is this seal suitable for industrial machinery?

Yes. It is designed for industrial gearboxes, hydraulic systems, pumps, electric motors and other rotating equipment operating with lubricating oils and greases.

What are the dimensions of this rotary shaft seal?

The seal has an inner diameter of 20 mm, an outer diameter of 47 mm and a width of 7 mm.

Can this seal be used as an OEM replacement?

Yes. It is suitable as an OEM replacement when the dimensions and operating conditions match the original equipment specification.

Why choose a B1 SC rotary shaft seal?

The B1 SC construction provides improved housing sealing, secure installation, reliable lubricant retention and long service life in demanding industrial applications.