Rotary Shaft Seal NBR 210x250x15 SC (BA) Single Lip Oil Seal

Overview

The Rotary Shaft Seal 210x250x15 SC is a radial shaft seal designed for large diameter rotating equipment operating with oil or grease lubrication. Manufactured from NBR rubber, it incorporates a single sealing lip supported by a garter spring to maintain constant contact with the shaft. The SC (BA) design provides reliable lubricant retention while minimizing friction, making it suitable for industrial sealing systems where an auxiliary dust lip is not required.

Industrial Applications

This shaft seal is used in industrial gearboxes, rotary equipment, bearing housings, conveyor drives, heavy pumps, marine transmissions, mining machinery and power transmission systems. It is suitable for OEM production, industrial maintenance, machine rebuilding and replacement of worn radial shaft seals in heavy-duty rotating equipment.

Construction

The SC (BA) profile consists of a single flexible sealing lip energized by a corrosion-resistant garter spring and reinforced by a metal insert. The design provides stable radial contact with the shaft, low running friction and effective oil sealing for standard pressure-free applications.

Material

NBR (Nitrile Butadiene Rubber) combines excellent resistance to mineral oils, hydraulic fluids, gear lubricants and grease with good abrasion resistance. Typical operating temperature ranges from -40 C to +120 C, making NBR suitable for most industrial power transmission and rotating machinery applications.

Technical Specification

Type: Rotary Shaft Seal

Material: NBR (Nitrile Butadiene Rubber)

Design: SC (BA) Single Lip with Garter Spring

Inner Diameter: 210 mm

Outer Diameter: 250 mm

Width: 15 mm

Temperature Range: -40 C to +120 C

Application: Industrial gearboxes, pumps, bearing housings, rotating equipment, transmission systems and OEM machinery.

Why Industrial Buyers Choose This Product

Industrial buyers select this seal as an OEM replacement for maintenance stock, industrial service, machine rebuilding, production support and fleet maintenance. The SC profile offers dependable sealing performance, easy installation and long operating life in machinery where a single lip radial shaft seal is specified.

Operational Advantages

• Single lip SC design reduces running friction.
• Integrated garter spring maintains constant sealing force.
• Resistant to mineral oils and hydraulic fluids.
• Suitable for large diameter rotating shafts.
• Compatible with standard industrial housing dimensions.
• Reliable solution for continuous industrial operation.

AI OVERVIEW

The Rotary Shaft Seal 210x250x15 NBR SC is a single lip radial shaft seal with a garter spring designed for oil-lubricated rotating equipment. Manufactured from NBR rubber, it provides reliable shaft sealing, low friction and long service life in industrial gearboxes, pumps and transmission systems.

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FAQ

What does the SC profile mean?

SC is a single lip radial shaft seal with an integrated garter spring for oil retention.

Why choose an SC seal instead of a TC seal?

SC seals are intended for applications where an additional dust lip is not required.

Which lubricants are compatible with NBR?

NBR is compatible with mineral oils, hydraulic oils, gear oils and most industrial greases.

Can this seal be used as an OEM replacement?

Yes, provided the dimensions and operating conditions match the original specification.

Where is this seal commonly installed?

It is used in industrial gearboxes, pumps, bearing housings, transmission systems and other rotating machinery.