GRN 40x62x7 TC FPM/FKM - Double Lip Rotary Shaft Oil Seal

GRN 40x62x7 mm TC FPM/FKM - Double Lip Rotary Shaft Oil Seal

GRN 40x62x7 mm TC FPM/FKM is a double lip radial rotary shaft oil seal manufactured from fluoroelastomer. It features a primary sealing lip and an additional dust lip to help protect the sealing area against external contamination. Designed for a nominal shaft diameter of 40 mm and a housing bore diameter of 62 mm, the seal has an axial width of 7 mm. The TC profile combines dynamic shaft sealing with additional protection against dust and other contaminants.

Technical Specifications - GRN 40x62x7 TC FPM/FKM

The TC designation identifies a double lip oil seal with a primary sealing lip and an additional dust exclusion lip.

Correct selection requires verification of the dimensions, material, construction and operating conditions.

What Does GRN 40x62x7 TC FPM/FKM Mean?

GRN - Industrial Sealing Brand

GRN is a brand of industrial sealing products offered by simmering.pl.

The GRN range includes rotary shaft oil seals designed for industrial equipment, mechanical workshops and maintenance applications.

Correct product identification is based on nominal dimensions, seal profile and elastomer material.

40x62x7 mm - Seal Dimensions

The designation 40x62x7 mm specifies three nominal dimensions:

• 40 mm - nominal shaft diameter.

• 62 mm - nominal housing bore diameter.

• 7 mm - nominal axial seal width.

These dimensions are essential for selecting a replacement oil seal.

However, dimensional compatibility alone does not guarantee interchangeability.

The seal profile, material and operating conditions must also be considered.

TC - Double Lip Oil Seal Profile

The TC profile is a common designation for a rotary shaft oil seal with a primary sealing lip and an additional dust lip.

The primary lip is designed to restrict lubricant leakage along the rotating shaft.

The secondary dust lip helps reduce the entry of external contaminants into the primary sealing area.

This construction is particularly useful where both lubricant retention and protection against dust are required.

The additional lip does not make the seal completely waterproof or suitable for unrestricted exposure to pressurised water.

FPM / FKM - Fluoroelastomer

FPM and FKM refer to the same general family of fluorocarbon elastomers under different material designation systems.

Fluoroelastomers are widely used in sealing applications requiring resistance to many mineral oils, lubricants, fuels and elevated temperatures.

Compared with conventional NBR compounds, FPM/FKM materials generally provide improved thermal resistance and broader compatibility with many chemicals.

However, the actual performance depends on:

• The specific elastomer compound.

• Type of lubricant or operating fluid.

• Operating temperature.

• Chemical additives.

• Exposure duration.

• Mechanical operating conditions.

A universal temperature or chemical resistance rating should not be assumed for every FPM/FKM oil seal.

Is FPM, FKM and Viton the Same Material?

FPM and FKM are general designations for the fluoroelastomer material family.

Viton is a registered trademark used for specific fluoroelastomer products.

In commercial terminology, FPM/FKM oil seals are sometimes described as Viton-type seals.

However, this does not establish that a particular GRN oil seal contains genuine Viton-branded material.

The confirmed material designation for this product is FPM/FKM.

Construction of the GRN 40x62x7 TC Oil Seal

Primary Sealing Lip

The primary sealing lip operates in contact with the rotating shaft surface.

Its main function is to restrict the escape of oil or another compatible lubricant from the sealed assembly.

Effective sealing depends on:

• Correct shaft dimensions.

• Shaft surface condition.

• Suitable lubrication.

• Operating temperature.

• Rotational speed.

• Shaft alignment.

• Correct installation.

Damage to the shaft surface or incorrect installation may result in premature lip wear and leakage.

Additional Dust Lip

The secondary lip provides an additional barrier against external contamination.

It helps limit the entry of dust and fine particles toward the primary sealing area.

This can be beneficial in industrial equipment exposed to environmental contaminants.

However, the dust lip should not be interpreted as a guarantee of complete protection against water immersion or high-pressure cleaning.

FPM/FKM Sealing Elastomer

The fluoroelastomer material offers useful resistance to many oils, greases and elevated temperatures.

Its suitability must be evaluated against the actual operating medium.

The FPM/FKM designation does not automatically establish compatibility with every chemical, solvent or industrial fluid.

Outer Sealing Surface

The outer surface of the oil seal fits into a housing bore with a nominal diameter of 62 mm.

Correct installation helps maintain the position of the seal and restrict leakage between its outer surface and the housing.

The housing dimensions and surface condition must meet the requirements of the seal construction.

GRN TC FPM vs Single Lip FPM Oil Seals

Double lip and single lip rotary shaft seals may share the same nominal dimensions and elastomer material.

Their construction and protective functions differ.

An additional dust lip may increase friction compared with an otherwise similar seal without a secondary lip.

The actual difference depends on the lip geometry, shaft condition and operating conditions.

GRN TC FPM/FKM vs GRN TC NBR

TC oil seals manufactured from FPM/FKM and NBR may have identical nominal dimensions but different material characteristics.

FPM/FKM and NBR should not automatically be considered interchangeable.

Before changing materials, verify the operating fluid, temperature, shaft speed and equipment manufacturer's requirements.

Applications of GRN 40x62x7 TC FPM/FKM

Double lip FPM/FKM rotary shaft oil seals can be used in appropriately designed mechanical assemblies containing rotating shafts.

Typical application categories include:

• Industrial gearboxes.

• Speed reducers.

• Mechanical drive systems.

• Bearing housings.

• Production machinery.

• Agricultural equipment.

• Workshop machinery.

• Power transmission assemblies.

These are general application categories for this type of oil seal, not a confirmed list of original equipment applications for the specific GRN product.

Final selection must be based on the requirements of the mechanical assembly.

Industrial Gearboxes

Rotary shaft oil seals are commonly used to restrict lubricant leakage where rotating shafts pass through gearbox housings.

The TC construction can provide additional protection against external contamination.

The operating fluid, pressure conditions and shaft speed must be suitable for the selected seal.

Electric Motor and Drive Assemblies

Rotary shaft seals may be used in suitable drive assemblies where lubricant retention or contaminant exclusion is required.

The exact design and operating conditions must be verified.

Agricultural and Industrial Machinery

Equipment operating in dusty environments may benefit from a seal with an additional dust lip.

However, suitability depends on the type and severity of contamination, operating conditions and installation geometry.

How to Select a 40x62x7 TC FPM/FKM Oil Seal

Verify the Shaft Diameter

The nominal shaft diameter is 40 mm.

The shaft surface must meet the dimensional and surface finish requirements for radial rotary shaft sealing.

Verify the Housing Bore Diameter

The nominal housing bore diameter is 62 mm.

The housing must be suitable for the oil seal's construction and installation requirements.

Confirm the Seal Width

The axial width is 7 mm.

Check the available installation space and the required position of the sealing lip on the shaft.

Confirm the TC Profile

The TC profile incorporates a primary sealing lip and an additional dust lip.

Not every 40x62x7 mm oil seal has the same lip arrangement.

Verify the FPM/FKM Material

The elastomer must be compatible with the actual lubricant or operating fluid.

Operating temperature and chemical exposure must also be considered.

Evaluate Operating Conditions

Important operating parameters include:

• Shaft rotational speed.

• Operating temperature.

• Pressure conditions.

• Shaft runout.

• Shaft surface roughness.

• Lubrication conditions.

• Environmental contamination.

• Installation geometry.

Specific permissible values should not be assumed without technical data for the exact seal construction.

Interchangeability and Replacement Selection

Can Any 40x62x7 mm Oil Seal Be Used?

No.

A replacement seal must have suitable dimensions, elastomer material, lip construction and operating characteristics.

Matching nominal dimensions alone does not confirm interchangeability.

Can a Single Lip Seal Be Replaced with a TC Double Lip Seal?

Such a replacement requires verification of the available installation space, sealing lip geometry and operating conditions.

The additional dust lip may affect friction and the required lubrication conditions.

Can FPM/FKM Replace NBR?

FPM/FKM may be suitable in applications where improved resistance to elevated temperatures or certain chemicals is required.

However, the replacement must be evaluated against the actual operating medium and mechanical conditions.

Is a TC Oil Seal Suitable for Pressurised Applications?

Suitability for pressure depends on the specific seal construction and manufacturer's technical limits.

The TC designation alone does not establish a permissible operating pressure.

Does the Additional Dust Lip Prevent Water Ingress?

The additional lip helps reduce the entry of contaminants.

It does not guarantee complete resistance to water immersion or high-pressure washing.

Installation and Operating Recommendations

Shaft Preparation

Before installation, clean the shaft and inspect the sealing contact surface.

Burrs, corrosion, grooves and other surface damage may cause accelerated seal wear or leakage.

Housing Preparation

The housing bore should be clean and free from damage.

Check the housing dimensions and installation edges before fitting the seal.

Protecting the Sealing Lips

Avoid contact between the sealing lips and sharp edges, threads or shaft grooves during installation.

Use a suitable installation sleeve when necessary.

Correct Installation Orientation

Install the oil seal according to the equipment manufacturer's instructions.

In typical lubricant-retaining applications, the primary sealing lip faces the sealed medium, while the additional dust lip faces the external environment.

Lubrication

Provide suitable lubrication before starting the equipment, according to the requirements of the seal and the mechanical assembly.

Avoid unintended dry-running conditions.

Installation Force

Apply installation force evenly using an appropriate fitting tool.

Avoid striking or deforming the sealing lips.

Storage

Store the seal in a clean, dry environment, away from excessive heat, direct sunlight and substances that may damage the elastomer.

Avoid deformation of the sealing lips during storage.

Frequently Asked Questions - GRN 40x62x7 TC FPM/FKM

What Are the Dimensions of the GRN 40x62x7 TC Oil Seal?

The seal has a nominal inside diameter of 40 mm, an outside diameter of 62 mm and an axial width of 7 mm.

What Does TC Mean in an Oil Seal?

TC identifies a double lip rotary shaft oil seal with a primary sealing lip and an additional dust exclusion lip.

Is GRN 40x62x7 TC a Double Lip Oil Seal?

Yes. It has a primary sealing lip for lubricant retention and a secondary dust lip for additional protection against external contamination.

Are FPM and FKM the Same Material?

Both designations refer to the general fluoroelastomer material family. They are used under different material naming systems.

Is This a Viton Oil Seal?

The seal is manufactured from FPM/FKM fluoroelastomer, sometimes described commercially as Viton-type material.

However, this does not confirm the use of genuine Viton-branded elastomer.

Is FPM/FKM Better Than NBR?

Not in every application.

FPM/FKM generally provides improved resistance to elevated temperatures and many chemicals, but material selection depends on the actual operating conditions.

Can a Single Lip Oil Seal Be Replaced with a TC Double Lip Seal?

Only after verifying installation space, lip geometry, lubrication and operating conditions.

Matching dimensions do not guarantee complete interchangeability.

Can This Oil Seal Be Used in a Gearbox?

It may be suitable for an appropriately designed gearbox if its dimensions, material, profile and operating characteristics meet the equipment requirements.

Does the TC Profile Provide Better Dust Protection?

The additional dust lip provides another barrier against external contamination compared with a similar seal without a dust lip.

The actual level of protection depends on the operating environment and seal construction.

What Is the Difference Between 40x62x7 TC FPM and 40x62x7 TC NBR?

Both may have the same dimensions and lip arrangement, but their elastomer materials differ.

FPM/FKM generally offers higher thermal resistance and different chemical compatibility characteristics than NBR.

GRN 40x62x7 TC FPM/FKM - Quick Technical Overview

GRN 40x62x7 TC FPM/FKM is a double lip radial rotary shaft oil seal with a 40 mm shaft diameter, 62 mm housing bore and 7 mm width. Its primary lip helps retain lubricant, while the additional dust lip reduces external contamination. The fluoroelastomer material provides resistance to many oils and elevated temperatures. Correct selection requires verification of operating conditions.

GRN Oil Seals at simmering.pl

GRN oil seals are available through simmering.pl, a specialist supplier of rotary shaft seals, industrial bearings and mechanical replacement components.

The GRN brand has been part of our product range since 2007.

We serve industrial companies, maintenance departments, mechanical workshops and B2B customers.

Our warehouse and order processing operations are located in Lublin, Poland.

We supply customers throughout Poland and the European Union and offer worldwide shipping.

We also assist customers in identifying rotary shaft oil seals by dimensions, elastomer materials and construction profiles.