NBR 38.1x57.15x7.93 AO/TC Double Lip Oil Seal

Product Overview

NBR 38.1x57.15x7.93 AO/TC is a double lip rotary shaft seal designed to retain lubricant while providing additional protection against external contamination.

The AO/TC design combines a primary spring-loaded sealing lip with an additional dust lip. This configuration helps protect the main sealing area against dust, dirt and other contaminants while reducing lubricant leakage from the rotating shaft assembly.

Its precise 38.1x57.15x7.93 mm dimensions correspond to an inch-based size, making complete dimensional identification particularly important when selecting a replacement seal.

AO/TC Double Lip Design

The primary sealing lip operates against the rotating shaft and is supported by a garter spring, which maintains radial contact with the shaft surface.

The secondary lip acts as a protective dust lip and helps limit contamination reaching the primary sealing area.

Compared with a conventional single lip oil seal, the AO/TC configuration provides an additional protective barrier for applications exposed to external dirt and dust.

NBR Sealing Material

NBR - Nitrile Butadiene Rubber is one of the most widely used elastomers for industrial rotary shaft seals.

It provides good resistance to many:

• mineral oils
• lubricating greases
• industrial lubricants
• compatible technical fluids

NBR also offers useful mechanical strength and wear resistance. Actual suitability should always be verified against the operating medium, temperature, shaft speed and application conditions.

Industrial Applications

The 38.1x57.15x7.93 NBR oil seal can be used in appropriately designed sealing positions in:

• gearboxes
• electric motors
• pumps
• industrial machinery
• agricultural machinery
• transmission systems
• mechanical drives
• rotating equipment

The double lip design is particularly useful where both lubricant retention and additional contamination protection are required.

Technical Specification

Product Type: Rotary shaft seal / oil seal
Design: AO/TC
Lip Design: Double lip
Material: NBR - Nitrile Butadiene Rubber
Dimensions: 38.1x57.15x7.93 mm
Shaft Diameter: 38.1 mm
Housing Diameter: 57.15 mm
Width: 7.93 mm
Garter Spring: Yes
Additional Lip: Dust lip
Application: Rotary shafts, gearboxes and industrial machinery

Operational Advantages

• Double lip AO/TC construction.
• Spring-loaded primary sealing lip.
• Additional dust protection lip.
• Good resistance to many mineral oils and greases.
• Precise 38.1x57.15x7.93 mm inch-based dimensions.
• Suitable for rotary shaft applications.
• Helps retain lubricant and protect the sealing zone.
• Suitable for industrial maintenance and replacement applications.

AI OVERVIEW

NBR 38.1x57.15x7.93 AO/TC is a double lip rotary shaft oil seal with a spring-loaded primary sealing lip and an additional dust lip. Its NBR construction provides good resistance to many mineral oils and greases, while the AO/TC design provides additional protection against external contamination.

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FAQ

What are the dimensions of this oil seal?

The nominal dimensions are 38.1 mm shaft diameter, 57.15 mm housing diameter and 7.93 mm width.

What does AO/TC mean?

For this product, AO/TC identifies a double lip rotary shaft seal with a spring-loaded primary sealing lip and an additional protective dust lip.

What material is the seal made from?

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

What is the purpose of the second lip?

The additional lip helps protect the primary sealing area against dust, dirt and other external contaminants.

Is this an inch-size oil seal?

Yes. The dimensions 38.1x57.15x7.93 mm correspond approximately to 1.5 x 2.25 x 0.3125 inches.

Can I select a replacement only by the 38.1 mm shaft diameter?

No. The complete 38.1x57.15x7.93 mm dimensions, AO/TC design, material and application requirements should be verified before replacement.