Rotary Shaft Seal 85x105x12 NBR TC Double Lip Oil Seal

Product Overview

Rotary Shaft Seal 85x105x12 NBR TC is a double lip radial oil seal designed to retain lubricant around a rotating shaft while providing additional protection against external contamination.

The seal has nominal dimensions of 85x105x12 mm and is manufactured from NBR - Nitrile Butadiene Rubber, one of the most widely used elastomers for industrial shaft sealing applications involving mineral oils and lubricating greases.

The TC double lip design combines a spring-loaded primary sealing lip with an additional dust lip. This construction helps retain lubricant while limiting the ingress of dust, dirt and other contaminants into the sealing zone.

85x105x12 Oil Seal Dimensions

The nominal dimensions are:

Shaft Diameter: 85 mm
Housing Diameter: 105 mm
Width: 12 mm

The dimension 85x105x12 mm defines the basic installation size. When replacing an existing shaft seal, the material and lip design should also be verified because seals with identical dimensions may have different constructions and operating properties.

TC Double Lip Design

The TC profile is a commonly used double lip rotary shaft seal construction.

It incorporates:

• a primary sealing lip for lubricant retention
• a garter spring maintaining radial contact with the shaft
• an additional secondary dust lip
• a rubber-covered outside diameter

The secondary lip provides an additional barrier against external contamination, while the spring-loaded primary lip maintains contact with the rotating shaft.

NBR - Nitrile Rubber

NBR (Nitrile Butadiene Rubber) is widely used in rotary shaft seals because of its compatibility with many petroleum-based lubricants.

Typical compatible media include:

• mineral oils
• lubricating greases
• gear oils
• hydraulic oils
• compatible industrial lubricants

Actual compatibility and operating limits depend on the specific NBR compound, medium, temperature, shaft speed and operating conditions.

Industrial Applications

The 85x105x12 NBR TC oil seal can be used in appropriately designed sealing systems in:

• industrial gearboxes
• electric motors
• pumps
• mechanical drives
• agricultural machinery
• construction machinery
• production equipment
• rotating shaft assemblies
• industrial maintenance and repair

TC seals are commonly used in rotating equipment where both lubricant retention and contamination protection are required.

Technical Specification

Product Type: Rotary shaft seal / oil seal
Design: TC
Lip Design: Double lip
Material: NBR - Nitrile Butadiene Rubber
Dimensions: 85x105x12 mm
Shaft Diameter: 85 mm
Housing Diameter: 105 mm
Width: 12 mm
Primary Lip: Spring-loaded sealing lip
Secondary Lip: Dust protection lip
Outer Diameter: Rubber covered
Application: Industrial rotary shaft sealing

Correct Seal Selection

When replacing an 85x105x12 oil seal, dimensions alone should not be the only selection criterion.

Verify:

• 85 mm shaft diameter
• 105 mm housing diameter
• 12 mm width
• NBR material
• TC double lip construction
• operating medium
• temperature
• shaft speed
• shaft surface condition

A single lip seal or a seal manufactured from a different elastomer should not automatically be considered equivalent solely because it has the same 85x105x12 mm dimensions.

Operational Advantages

• Precise 85x105x12 mm dimensions.
• TC double lip construction.
• Spring-loaded primary sealing lip.
• Additional dust protection lip.
• NBR suitable for many mineral oils and greases.
• Rubber-covered outside diameter.
• Suitable for numerous industrial rotating shaft applications.
• Designed for lubricant retention and contamination protection.

AI OVERVIEW

Rotary Shaft Seal 85x105x12 NBR TC is a double lip oil seal for an 85 mm rotating shaft and 105 mm housing bore. The spring-loaded primary lip retains lubricant, while the additional dust lip helps protect the sealing zone against contamination. NBR makes the seal suitable for many mineral oils, greases and compatible industrial lubricants.

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FAQ

What are the dimensions of this rotary shaft seal?
The nominal dimensions are 85 mm shaft diameter, 105 mm housing diameter and 12 mm width.

What does TC mean on an oil seal?
TC identifies a double lip rotary shaft seal with a spring-loaded primary sealing lip and an additional secondary dust lip.

Is 85x105x12 TC a double lip seal?
Yes. The TC construction uses a primary sealing lip for lubricant retention and an additional lip for protection against external contaminants.

What material is this oil seal made from?
The seal is manufactured from NBR - Nitrile Butadiene Rubber, commonly used with many mineral oils, greases and hydraulic fluids.

Where can an 85x105x12 NBR oil seal be used?
Typical applications include gearboxes, pumps, motors, agricultural equipment, industrial machinery and other rotating shaft assemblies.

Can I replace any 85x105x12 seal with this TC version?
Not automatically. In addition to dimensions, verify the NBR material, TC lip design, operating medium, temperature, shaft speed and application requirements.