WBT OS-A11 NBR Oil Seal, 40x50x5 mm

Description

This is a high-quality oil seal, model OS-A11, from WBT World Bearing Trade. Manufactured from durable NBR (Nitrile Butadiene Rubber), it is designed for effective sealing in a wide range of industrial applications. This package contains two seals, ensuring you have what you need for your maintenance or repair project.

Specifications

• Manufacturer: WBT World Bearing Trade
• Type: OS-A11
• Dimensions: 40 mm Inner Diameter x 50 mm Outer Diameter x 5 mm Width
• Material: NBR (Nitrile Butadiene Rubber)
• Quantity: 2 Pieces

Label Info

• Article Number: 23053589
• Barcode: 2511100012

Application

Designed for rotating shaft applications to retain oil or grease and prevent the ingress of dirt, dust, and moisture. Commonly used in gearboxes, motors, pumps, and other machinery.

Country of Origin

Information not available on product.

CO2 Impact

By purchasing this pre-owned set of seals, you contribute to a circular economy and help avoid approximately 0.3 kg of CO2 emissions associated with new production. This saving is equivalent to charging a smartphone about 36 times.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

Standard NBR seals generally operate effectively in temperatures ranging from -30 deg C to +100 deg C. Performance can vary based on the specific medium and operating conditions.

The OS-A11 is a standard single-lip seal, typically designed for low-pressure applications, generally up to about 0.5 bar. For higher pressures, a different seal profile or material may be required.

NBR is excellent for oil and fuel resistance at moderate temperatures. FKM (often known by its brand name Viton) offers superior resistance to a wider range of chemicals and can withstand much higher temperatures (up to 200 deg C), but it is generally more expensive.

Last Update: Friday, March 13, 2026

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