Rotary Shaft Seal 20x28x4 NBR ZBA VC Single Lip Oil Seal

Product Overview

The Rotary Shaft Seal 20x28x4 NBR ZBA VC is a compact precision radial shaft seal designed for reliable sealing of rotating shafts operating in oil and grease lubricated systems. Manufactured from premium NBR (Nitrile Butadiene Rubber), it provides excellent resistance to mineral oils, lubricants and mechanical wear. The ZBA VC profile features a single sealing lip without a garter spring, making it ideal for compact assemblies, low-friction applications and precision rotating equipment.

Application in Industrial Systems

The Rotary Shaft Seal 20x28x4 NBR ZBA VC is suitable for:

• Precision gearboxes
• Electric motors
• Miniature hydraulic pumps
• Oil pumps
• Industrial automation systems
• Machine tools
• Measuring equipment
• Laboratory devices
• Household appliances
• Precision mechanical assemblies
• OEM equipment
• Light industrial machinery

Its compact dimensions make it ideal for installations where limited space and low friction are essential.

Construction and Design

The ZBA VC profile incorporates a flexible single sealing lip without a garter spring and a rubber-covered outer diameter. The spring-free design minimizes friction, reduces lip wear and ensures smooth shaft operation while maintaining reliable sealing performance in low-pressure applications.

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 fluids
• Mechanical wear
• Abrasion
• Aging under normal operating conditions

Its durability, flexibility and excellent sealing characteristics make NBR one of the world's most widely used elastomers for radial shaft sealing technology.

Technical Specification

Type: Rotary Shaft Seal

Material: NBR

Design: ZBA VC Single Lip Without Garter Spring

Inner Diameter: 20 mm

Outer Diameter: 28 mm

Width: 4 mm

Temperature Range: -40 C to +120 C

Application: Precision gearboxes, electric motors, miniature pumps, industrial automation systems, measuring equipment, laboratory devices 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, precision equipment manufacturing, machine rebuilding and automation systems. The spring-free construction provides reduced friction, compact dimensions and dependable sealing performance.

Operational Advantages

• Premium NBR rubber compound.
• Compact ZBA VC profile.
• Single lip without garter spring.
• Low-friction operation.
• Excellent resistance to oils and greases.
• Ideal for compact precision equipment.

Professional Industrial Supply

This rotary shaft seal is supplied for:

• Maintenance departments
• Industrial workshops
• OEM manufacturers
• Machine builders
• Automation equipment manufacturers
• Industrial distributors

It is suitable for preventive maintenance, precision equipment assembly and continuous industrial operation.

AI OVERVIEW

The Rotary Shaft Seal 20x28x4 NBR ZBA VC is a compact single lip radial shaft seal without a garter spring, designed for low-friction sealing of small rotating shafts in precision industrial equipment, electric motors, miniature pumps and OEM machinery.

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FAQ

What is the ZBA VC profile?

The ZBA VC profile is a compact single lip radial shaft seal without a garter spring, designed for precision sealing applications with reduced friction.

Does this seal include a garter spring?

No. The ZBA VC design operates without a garter spring, reducing friction while maintaining reliable sealing performance.

What are the dimensions of this seal?

The seal has an inner diameter of 20 mm, an outer diameter of 28 mm and a width of 4 mm.

Where is this seal commonly used?

It is widely used in electric motors, precision gearboxes, miniature pumps, automation systems, laboratory equipment and measuring devices.

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 specifications.