NBR Double Lip Oil Seal 37x66x9.5/12 AO TC Rotary Shaft Seal

Construction and design

The NBR double lip oil seal 37x66x9.5/12 AO TC is a rotary shaft seal designed for reliable sealing in demanding rotating systems where both oil retention and contamination protection are required.

The AO TC design includes:

• primary sealing lip with garter spring ensuring tight oil sealing
• secondary dust lip protecting against dirt, dust and moisture

The stepped width 9.5/12 mm allows installation in specific housing designs, improving stability and sealing performance.

Manufactured from NBR elastomer, the seal provides excellent resistance to oils, greases and standard industrial operating conditions.

Technical specifications

Type: rotary shaft oil seal
Design: AO TC double lip
Material: NBR
Inner diameter: 37 mm
Outer diameter: 66 mm
Width: 9.5/12 mm
Spring: yes
Temperature range: -30°C to +100°C
Media: oils, greases, lubricants

Technical snippet:
NBR 37x66x9.5/12 AO TC is a double lip rotary shaft oil seal designed for oil retention and contamination protection in rotating equipment.

Industrial applications

The NBR oil seal 37x66x9.5/12 AO TC is widely used across industrial and automotive systems where durability and sealing reliability are critical.

Typical applications include:

• gearboxes and transmissions
• hydraulic systems and pumps
• electric motors
• agricultural machinery
• industrial production equipment

The double lip configuration ensures stable performance even in dusty or contaminated environments.

Operational advantages

This rotary shaft seal ensures long term reliability and efficient sealing performance.

Key benefits:

• effective oil sealing with spring loaded lip
• additional protection against contamination
• compatibility with oils and lubricants
• reduced leakage risk
• extended service life

The special width design increases mounting flexibility in complex assemblies.

Main description

NBR double lip oil seal 37x66x9.5/12 AO TC is a rotary shaft sealing solution designed for applications requiring both oil retention and protection against external contaminants.

One sentence definition:
NBR 37x66x9.5/12 AO TC is a double lip rotary shaft oil seal that prevents oil leakage and protects machinery from dust and contamination.

The seal combines a spring loaded primary lip responsible for maintaining tight sealing against the shaft with a secondary lip that acts as a barrier against dirt and environmental factors. Its stepped width enables installation in specialized housings used in advanced industrial systems.

Common long tail search queries supported:

• oil seal 37x66x9.5/12
• NBR shaft seal 37x66x9.5/12
• double lip oil seal AO TC
• rotary shaft seal 37 mm

This product is suitable for OEM use as well as maintenance and repair operations.

FAQ

What does AO TC mean in oil seals?
It indicates a double lip design with a dust protection lip.

Why does the seal have width 9.5/12 mm?
It is designed for specific housing configurations requiring stepped dimensions.

Is NBR suitable for oil applications?
Yes, it provides excellent resistance to oils and greases.

Where is this oil seal used?
In gearboxes, pumps, motors and industrial machinery.

Does it include a spring?
Yes, the main sealing lip is spring loaded.