NBR 125x143x13 AO/TC Double Lip Radial Shaft Seal

Overview

The NBR 125x143x13 AO/TC is a double lip radial shaft seal designed for a 125 mm shaft and 143 mm housing bore.

The AO/TC design incorporates a spring-loaded primary sealing lip and an additional dust lip. The primary lip retains lubricant at the rotating shaft, while the auxiliary lip provides additional protection against external dust and contamination.

Technical Specification

Product Type: Radial shaft seal

Design: AO / TC

Material: NBR - Nitrile Butadiene Rubber

Shaft Diameter d: 125 mm

Housing Bore D: 143 mm

Width B: 13 mm

Dimensions: 125x143x13 mm

Number of Lips: 2

Primary Lip: Spring-loaded

Secondary Lip: Dust protection lip

Outside Surface: Rubber covered

AO/TC Design

The double lip construction consists of:

• Spring-loaded primary sealing lip
• Additional dust protection lip
• Internal metal reinforcement
• Rubber-covered outside surface

The primary sealing lip provides dynamic sealing against the rotating shaft, while the secondary lip helps prevent contaminants from reaching the main sealing area.

NBR Material

NBR (Nitrile Butadiene Rubber) is a standard elastomer widely used for radial shaft seals due to its resistance to mineral oils and greases.

The suitability of NBR depends on the operating medium, temperature, shaft speed and application conditions.

Industrial Applications

AO/TC radial shaft seals are commonly used in:

• Gearboxes
• Gear reducers
• Pumps
• Industrial drives
• Bearing arrangements
• Shafts and axles
• General industrial machinery

Operational Advantages

• Double lip AO/TC design.
• 125x143x13 mm dimensions.
• Spring-loaded primary sealing lip.
• Additional dust protection lip.
• Rubber-covered outside diameter.
• NBR material for use with compatible oils and greases.

AI OVERVIEW

The NBR 125x143x13 AO/TC is a double lip radial shaft seal for a 125 mm shaft and 143 mm housing bore. It features a spring-loaded primary sealing lip, auxiliary dust lip and rubber-covered outside surface. The NBR construction is suitable for sealing compatible mineral oils and greases in industrial machinery.

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FAQ

What are the dimensions of the seal?

The dimensions are 125x143x13 mm.

What material is the seal made from?

It is manufactured from NBR - Nitrile Butadiene Rubber.

Is AO/TC a double lip design?

Yes. It has a primary sealing lip and an additional dust protection lip.

Does the primary lip have a garter spring?

Yes. The primary sealing lip is spring-loaded.

What shaft diameter is the seal designed for?

It is designed for a 125 mm shaft.

What is the outside diameter?

The outside diameter is 143 mm.

What is the seal width?

The width is 13 mm.

What is the purpose of the secondary lip?

The secondary lip helps protect the main sealing area against dust and external contamination.

What is the correct product category?

The product belongs to Double Lip Radial Shaft Seals.