GRN® 135x165x12 NBR TC - Double Lip Radial Shaft Oil Seal

Product Description

GRN® 135x165x12 NBR TC is a double lip radial shaft oil seal (Simmerring) manufactured from nitrile butadiene rubber (NBR). Its nominal dimensions are 135x165x12 mm, with an inner diameter of 135 mm, an outer diameter of 165 mm and an axial width of 12 mm. The TC sealing profile features a primary sealing lip and an additional dust exclusion lip, helping reduce lubricant leakage and limit contamination ingress into rotating mechanical assemblies.

The GRN® oil seal is designed for installation on a shaft with a nominal diameter of 135 mm and in a housing bore with a nominal diameter of 165 mm.

Its primary function is to retain oil or grease inside rotating equipment, while the additional dust exclusion lip helps protect the main sealing interface against dust, dirt and fine particles.

The nominal radial cross-section height is 15 mm.

Due to the relatively large shaft diameter, shaft surface speed, lubrication conditions, operating temperature and shaft surface condition are particularly important when selecting this oil seal.

Technical Specifications - GRN® 135x165x12 NBR TC

Technical note: The dimensions, material and sealing profile are based on the supplied product designation. Without verified GRN® documentation for this specific product, no particular NBR hardness, operating temperature range, permissible pressure, maximum shaft surface speed or exact spring construction should be assumed.

GRN® 135x165x12 Oil Seal Dimensions

The designation 135x165x12 mm defines three essential installation dimensions:

• Shaft diameter: 135 mm.

• Housing bore diameter: 165 mm.

• Oil seal width: 12 mm.

The nominal radial cross-section height is 15 mm.

These are nominal dimensions. Actual shaft, housing and oil seal tolerances must be determined according to the equipment's mechanical design requirements.

What Does GRN® 135x165x12 NBR TC Mean?

GRN® - Product Brand

GRN® is a brand of technical sealing components, including radial shaft oil seals and O-rings.

135x165x12 - Nominal Dimensions

• 135 mm - inner diameter d.

• 165 mm - outer diameter D.

• 12 mm - axial width b.

NBR - Nitrile Butadiene Rubber

NBR is a synthetic elastomer commonly used in sealing applications involving many mineral oils and lubricating greases.

TC - Double Lip Sealing Profile

The TC profile identifies a construction with two lips:

• A primary sealing lip.

• An additional dust exclusion lip.

However, full interchangeability between oil seals from different manufacturers should not be assumed solely from the sealing profile designation.

Construction and Operating Principle

Primary Sealing Lip

The primary sealing lip operates against the rotating surface of a shaft with a nominal diameter of 135 mm.

Its purpose is to create a dynamic sealing interface that helps prevent lubricant from escaping the mechanical assembly.

Sealing performance depends on lip geometry, shaft surface condition, lubrication, operating temperature and shaft surface speed.

Additional Dust Exclusion Lip

The secondary lip helps prevent dust, dirt and fine particles from reaching the primary sealing interface.

It provides an additional protective barrier, particularly in environments exposed to contamination.

However, this does not guarantee complete resistance to pressurized water or suitability for every environmental condition.

Garter Spring

Typical TC radial shaft oil seals feature a garter spring supporting the primary sealing lip and helping maintain contact with the rotating shaft.

The presence and exact construction of the spring in the specific GRN® 135x165x12 NBR TC oil seal require confirmation from the manufacturer's technical documentation.

Oil Seal Body

Typical TC oil seals incorporate internal metal reinforcement and a rubber-covered outer diameter.

This construction helps maintain the seal body's geometry and provides static sealing between the seal and housing bore.

The exact body construction of the GRN® 135x165x12 oil seal should be confirmed by the manufacturer.

NBR Material - Properties and Limitations

Nitrile Butadiene Rubber is one of the most commonly used elastomers in radial shaft oil seals.

Its relevant properties include:

• Good resistance to many mineral oils.

• Compatibility with numerous mineral oil-based lubricating greases.

• Elasticity required for dynamic shaft sealing.

• Suitability for appropriately designed rotating mechanical assemblies.

Chemical resistance depends on the specific NBR compound and the operating medium.

Compatibility with all synthetic oils, fuels, solvents and chemicals must not be assumed solely from the NBR designation.

Similarly, permissible operating temperature depends on the elastomer formulation and operating conditions. Without manufacturer data, a reliable temperature range cannot be assigned to this specific oil seal.

TC Double Lip vs Single Lip Radial Shaft Oil Seals

The TC profile provides an additional dust exclusion barrier.

However, a double lip oil seal cannot automatically replace a single lip seal in every application.

Before changing the sealing design, installation space, lip positioning and lubrication requirements must be checked.

GRN® 135x165x12 Compared with Other Oil Seal Dimensions

When identifying a replacement oil seal, all three dimensions must be considered.

The dimensions in this table are provided for geometric comparison and do not confirm the availability of specific variants.

A 135x170x15 mm oil seal has an outer diameter 5 mm larger and an axial width 3 mm greater, making it unsuitable as a direct dimensional replacement.

A 135x165x15 mm oil seal has the same inner and outer diameters but is 3 mm wider. This difference may affect installation and sealing lip position on the shaft.

An identical shaft diameter does not guarantee full oil seal interchangeability.

Alternative Designations and Search References

Natural variations of the product designation include:

• GRN® 135x165x12 NBR TC

• 135x165x12 NBR TC GRN®

• GRN® 135x165x12 Simmerring

• GRN® 135x165x12 NBR double lip oil seal

• 135x165x12 TC radial shaft oil seal GRN®

These are alternative ways of identifying the stated product, not verified catalogue numbers from other manufacturers.

No unverified OEM references or cross-reference numbers have been assigned.

Oil Seal Selection and Interchangeability

Before purchasing, verify the following:

1. Shaft diameter: nominally 135 mm.

2. Housing bore diameter: nominally 165 mm.

3. Axial width: 12 mm.

4. Sealing profile: double lip TC.

5. Material: NBR compatible with the operating medium.

6. Shaft condition: wear, scratches, corrosion and surface roughness.

7. Rotational speed: compatibility with the seal's operating requirements.

8. Operating temperature: actual conditions at the sealing interface.

9. Pressure: conditions inside the housing.

10. Contamination: dust, moisture and environmental exposure.

11. Construction: compatibility of the seal body and lips with equipment requirements.

Shaft Surface Speed for a 135 mm Shaft

Shaft surface speed depends on shaft diameter and rotational speed.

It can be calculated using:

Where:

• v - shaft surface speed in m/s.

• d - shaft diameter in mm.

• n - rotational speed in rpm.

For a shaft diameter of 135 mm:

These values are geometric calculations.

They do not represent verified permissible operating speeds for the GRN® 135x165x12 NBR TC oil seal.

With a large shaft diameter, even moderate rotational speeds can generate substantial linear velocity at the sealing lip contact area.

Therefore, lubrication, temperature and manufacturer-approved operating limits require particular attention during product selection.

Typical Applications of TC Double Lip Radial Shaft Oil Seals

Double lip radial shaft oil seals are used in appropriately designed rotating mechanical assemblies where lubricant retention and protection against contamination are required.

General application categories for this sealing construction include:

• Mechanical drive systems.

• Gearboxes and rotating assemblies.

• Bearing housings.

• Industrial machinery and equipment.

These are typical applications of the sealing design, not verified OEM applications of the specific GRN® 135x165x12 product.

Suitability depends on dimensions, material, operating temperature, shaft speed, operating medium and application conditions.

Installation and Operating Recommendations

Before installation, thoroughly clean the shaft surface and housing bore.

Check the shaft for scratches, sharp edges or wear grooves that could damage the sealing lip.

Install the oil seal evenly using a suitable installation tool. Installation force should not be transmitted through the sealing lips.

In typical applications, the primary sealing lip should face the retained lubricant, while the dust exclusion lip faces the external environment. The final installation orientation must follow the equipment manufacturer's instructions.

Before initial operation, ensure appropriate lubrication of the primary sealing lip contact area. For double lip constructions, lubrication requirements for the space between the lips must also be considered.

Store the oil seal in a clean, dry environment protected from direct sunlight, ozone and deformation.

Frequently Asked Questions - GRN® 135x165x12 NBR TC

1. What are the dimensions of the GRN® 135x165x12 NBR TC oil seal?

The inner diameter is 135 mm, the outer diameter is 165 mm and the axial width is 12 mm. The nominal radial cross-section height is 15 mm.

2. What does TC mean in the GRN® 135x165x12 oil seal designation?

TC identifies a double lip sealing profile featuring a primary sealing lip and an additional dust exclusion lip.

3. Is the GRN® 135x165x12 a double lip oil seal?

Yes. The construction features a primary sealing lip and an additional lip designed to limit dust and contamination ingress.

4. Is NBR suitable for sealing oil?

Yes. NBR offers good resistance to many mineral oils and lubricating greases. Compatibility with the specific operating medium should be verified.

5. Can a 135x165x15 oil seal replace a 135x165x12 oil seal?

Interchangeability should not be assumed. The 3 mm difference in axial width may affect installation depth and sealing lip position.

6. Is a 135x170x15 oil seal interchangeable with a 135x165x12 oil seal?

No, not as a direct dimensional replacement. The two seals differ in both outer diameter and axial width.

7. Can an oil seal from another manufacturer with the same dimensions be used?

It may be suitable if the dimensions, sealing profile, material, construction and permissible operating conditions are compatible.

8. How should the GRN® 135x165x12 NBR TC oil seal be installed?

Clean the shaft and housing, inspect the contact surfaces, install the oil seal evenly, and ensure correct sealing lip orientation and lubrication.

GRN® 135x165x12 NBR TC - Key Information

GRN® 135x165x12 NBR TC is a double lip radial shaft oil seal with nominal dimensions of 135x165x12 mm, manufactured from nitrile butadiene rubber. The TC profile features a primary sealing lip and an additional dust exclusion lip. Its nominal radial cross-section height is 15 mm. The seal helps reduce oil and grease leakage while limiting contamination ingress.

The GRN® 135x165x12 NBR TC oil seal is offered by simmering.pl, a specialist supplier of industrial sealing components, O-rings and bearings. The company operates a warehouse in Lublin, Poland, and serves customers in Poland and international markets.