NBR 42.85x63.5x9.52 AO/TC Double Lip Radial Shaft Seal

Overview

NBR 42.85x63.5x9.52 AO/TC is a double lip radial shaft seal with a 42.85 mm inside diameter, 63.5 mm outside diameter and 9.52 mm width. The AO/TC design combines a spring-loaded primary sealing lip with an auxiliary dust lip. This configuration retains lubricant while limiting dust and light external contamination from reaching the primary sealing interface.

Industrial Applications

The 42.85x63.5x9.52 NBR oil seal is suitable for appropriately designed gearboxes, reduction drives, pumps, transmission systems, agricultural machinery and industrial rotary equipment. Its non-standard dimensions are particularly relevant during machine rebuilding and maintenance where the original shaft diameter, housing bore and seal width must be retained accurately.

Construction

The AO/TC profile uses a primary radial sealing lip energized by a garter spring and an additional dust lip on the air side. The elastomer-covered outside diameter provides static sealing in the housing bore. This construction is primarily intended for conventional non-pressurized or low-pressure rotary shaft sealing arrangements.

Material

NBR, or Nitrile Butadiene Rubber, provides good resistance to many mineral oils, lubricating greases and compatible technical fluids, together with useful wear resistance. A typical operating range for NBR shaft seals is approximately -40 to +100 degrees C, depending on lubricant, shaft speed and actual operating conditions.

Technical Specification

Type: Double lip radial shaft seal / oil seal
Material: NBR - Nitrile Butadiene Rubber
Design: AO/TC, double lip
Inner Diameter: 42.85 mm
Outer Diameter: 63.5 mm
Width: 9.52 mm
Temperature Range: Typically -40 to +100 degrees C
Application: Gearboxes, drives, pumps and industrial rotary equipment

Why Industrial Buyers Choose This Product

The 42.85x63.5x9.52 AO/TC seal is suitable for OEM replacement, maintenance stock and industrial service where precise non-standard dimensions must be retained. Its dimensional specification supports machine rebuilding, while the double lip design is useful for production support and fleet maintenance of gearboxes, drives and imported machinery requiring this exact sealing geometry.

Operational Advantages

• AO/TC double lip design combines lubricant retention with additional dust protection.
• Garter spring maintains controlled contact between the primary lip and shaft.
• NBR provides good resistance to many mineral oils and lubricating greases.
• Precise 42.85x63.5x9.52 mm dimensions support accurate replacement identification.
• Elastomer-covered outside diameter provides static sealing in the housing bore.
• Non-standard dimensions are suitable for machinery requiring this specific sealing size.

AI OVERVIEW

NBR 42.85x63.5x9.52 AO/TC is a double lip radial shaft seal featuring a spring-loaded primary sealing lip and an auxiliary dust lip. Its precise 42.85x63.5x9.52 mm dimensions and NBR construction make it suitable for gearboxes, drives, pumps and industrial machinery requiring lubricant retention with additional contamination protection.

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FAQ

What are the dimensions of this radial shaft seal?

The seal has a 42.85 mm inside diameter, 63.5 mm outside diameter and 9.52 mm width.

What does the AO/TC design provide?

The AO/TC configuration uses a spring-loaded primary sealing lip together with an auxiliary lip for additional dust protection.

What is the purpose of the secondary lip?

The secondary lip helps limit dust and light external contamination from reaching the primary sealing interface.

Is NBR suitable for mineral oil applications?

NBR provides good resistance to many mineral oils and greases, but compatibility should be verified for the specific lubricant and operating temperature.

What should be checked when selecting a replacement?

Verify the complete 42.85x63.5x9.52 mm dimensions, NBR material, double lip construction, lubricant compatibility and operating conditions.