FKM FPM Viton 36x62x7 TC - Double Lip Rotary Shaft Oil Seal

Technical Specification

The AO/TC designation is commonly associated with a rotary shaft seal featuring a metal reinforcing insert, rubber-covered outside diameter, spring-loaded primary sealing lip and auxiliary dust lip.

The exact construction of this product must be confirmed against manufacturer documentation.

The manufacturer, catalogue number, elastomer hardness, specific FKM compound, spring material, permissible rotational speed and operating temperature range have not been established.

Important information about Viton: Viton is a registered trademark associated with specific fluoroelastomer materials. The FKM/FPM designation alone does not confirm that the seal is manufactured from genuine Viton-branded material.

What Does FKM FPM Viton 36x62x7 AO/TC Mean?

AO and TC may describe similar seal configurations, but their definitions are not universally identical across manufacturers.

Complete interchangeability requires verification of the technical drawing, construction details and operating parameters.

AO/TC Oil Seal Construction

The 36x62x7 AO/TC oil seal is designed for installation in a stationary housing bore surrounding a rotating shaft with a nominal diameter of 36 mm.

A typical AO/TC construction consists of:

• Primary sealing lip: An elastomer contact element that helps retain lubricating oil or another compatible medium.

• Garter spring: Typically maintains additional radial contact force between the primary lip and the shaft.

• Auxiliary dust lip: Provides an additional barrier against external contamination.

• Metal reinforcing insert: Supports dimensional stability and structural integrity.

• Rubber-covered outside diameter: Provides the outer sealing interface between the seal and the housing bore.

The auxiliary dust lip is not intended to function as a second independent pressure seal. Its main purpose is to reduce the entry of external contaminants into the primary sealing area.

FKM/FPM Fluoroelastomer Properties

FKM fluoroelastomers are widely used in industrial sealing systems because of their resistance to many oils, fuels, selected chemicals and elevated temperatures.

Typical material characteristics include:

• Good resistance to many mineral and synthetic oils.

• Resistance to numerous fuels and hydrocarbons, depending on compound formulation.

• Good resistance to ozone and atmospheric ageing.

• Suitability for higher operating temperatures than many standard NBR compounds.

• Chemical resistance that depends on the specific FKM formulation.

• Limited compatibility with certain ketones, amines, esters and other aggressive chemicals.

The exact temperature capability and chemical resistance of this particular oil seal cannot be established without the manufacturer's compound specifications.

The material designation FKM does not identify hardness, formulation, low-temperature performance or the complete chemical compatibility profile.

AO/TC Oil Seal Compared with Other Designs

These descriptions reflect common industry conventions. Exact designations and construction details may vary between manufacturers.

An AO/TC oil seal is not automatically interchangeable with an A/SC oil seal, even when both have identical dimensions of 36x62x7 mm.

The auxiliary lip changes the contact arrangement and can affect friction, lubrication requirements and operating temperature.

Selection and Interchangeability

Before selecting the FKM FPM Viton 36x62x7 AO/TC oil seal, verify:

1. Nominal shaft diameter of 36 mm.

2. Nominal housing bore diameter of 62 mm.

3. Nominal installation width of 7 mm.

4. Required AO/TC double lip construction.

5. FKM/FPM elastomer compatibility.

6. Shaft surface condition and roughness.

7. Shaft and housing dimensional tolerances.

8. Type of sealed medium.

9. Operating temperature and rotational speed.

10. Pressure acting on the seal.

11. Spring and metal insert material, where environmental conditions require verification.

12. Shaft rotation direction and any special lip design requirements.

Identical dimensions of 36x62x7 mm do not guarantee complete interchangeability between different rotary shaft oil seals.

NBR and FKM variants have different material properties. AO/TC seals from different manufacturers may also differ in their detailed construction.

Applications

FKM FPM Viton 36x62x7 AO/TC may be considered for appropriately designed rotating shaft assemblies requiring lubricant retention and additional protection against contamination.

Typical applications for this seal construction include:

• Rotary shaft seals in industrial gearboxes.

• Selected oil-lubricated bearing housings.

• Drive assemblies and rotating mechanical equipment.

• Industrial machinery operating with compatible oils and lubricants.

• Rotating assemblies requiring an auxiliary dust exclusion lip.

These are general applications associated with AO/TC rotary shaft seal construction, not verified OEM applications for this particular product.

Selection for a specific gearbox, motor, pump or industrial machine requires confirmation of its technical and operating requirements.

Alternative Designations and Reference Numbers

Common descriptive variations include:

• FKM FPM Viton 36x62x7 AO/TC

• Oil seal 36x62x7 FKM AO/TC

• Rotary shaft seal 36x62x7 FPM TC

• Double lip oil seal 36x62x7 FKM

• Radial shaft sealing ring 36x62x7 AO

• FKM shaft seal 36x62x7 TC

• Fluoroelastomer oil seal 36x62x7 mm

These are descriptive identification variants, not verified manufacturer catalogue numbers or OEM references.

No manufacturer-specific cross-reference or confirmed replacement part number has been established.

Installation and Operating Recommendations

Before installation, inspect the shaft, housing bore and mating surfaces. The sealing area must be free from burrs, sharp edges and damage that could cut or deform the sealing lips.

During installation:

• Clean the shaft and housing bore.

• Verify the nominal dimensions of 36x62x7 mm.

• Protect the sealing lips when passing over shaft shoulders, keyways or grooves.

• Use an appropriate installation tool and apply force to the correct face of the seal.

• Install the seal squarely with the shaft axis.

• Position the primary spring-loaded sealing lip towards the retained medium unless the equipment manufacturer specifies otherwise.

• Provide suitable lubrication at the primary lip contact surface.

• Check that the auxiliary dust lip has not folded during installation.

Standard rotary shaft seals should not be operated with dry primary lip contact unless the manufacturer explicitly permits such conditions.

During operation, monitor leakage, shaft condition and temperature around the sealing interface.

FAQ - Frequently Asked Questions

What are the dimensions of FKM FPM Viton 36x62x7 AO/TC?

The nominal shaft diameter is 36 mm, the housing bore diameter is 62 mm and the seal width is 7 mm. The designation therefore corresponds to dimensions of 36x62x7 mm.

What does AO/TC mean in a 36x62x7 oil seal?

AO/TC commonly identifies a double lip rotary shaft seal with a spring-loaded primary sealing lip and an auxiliary dust exclusion lip. The exact construction should be confirmed against the manufacturer's specifications.

Are FKM and FPM the same material?

Both designations refer to the fluoroelastomer family. However, they do not identify the exact compound formulation or guarantee identical operating characteristics across different products.

Is every FKM oil seal made from genuine Viton?

No. Viton is a trademark for specific fluoroelastomer materials. Genuine Viton-branded material requires appropriate manufacturer confirmation or traceability.

Is the FKM 36x62x7 oil seal suitable for high temperatures?

FKM fluoroelastomers are commonly used in elevated-temperature sealing applications. However, the permissible temperature depends on the specific compound, sealed medium and operating conditions. No exact temperature rating has been verified for this product.

Can an AO/TC oil seal be replaced with an A/SC seal?

Not automatically. AO/TC has an additional dust lip that is usually absent from standard A/SC designs. Replacement requires assessment of contamination protection, friction and operating conditions.

Can an FKM 36x62x7 oil seal replace an NBR version?

Only after verifying the operating requirements. FKM and NBR differ in temperature resistance, chemical compatibility and mechanical characteristics. Matching dimensions alone are insufficient.

Which direction should a 36x62x7 AO/TC oil seal face during installation?

In a conventional arrangement, the primary spring-loaded sealing lip faces the retained medium, while the auxiliary dust lip faces the external environment. The equipment manufacturer's installation instructions take precedence.

FKM FPM Viton 36x62x7 AO/TC - Key Technical Information

FKM FPM Viton 36x62x7 AO/TC is a double lip rotary shaft oil seal with nominal dimensions of 36x62x7 mm. Its FKM/FPM elastomer belongs to the fluoroelastomer material family. The AO/TC configuration combines a primary sealing lip with an auxiliary dust lip. Correct selection requires verification of compound compatibility, operating conditions and manufacturer-specific construction details.

FKM/FPM Rotary Shaft Oil Seals at simmering.pl

simmering.pl is a specialist B2B industrial trading platform supplying rotary shaft oil seals, FKM/FPM sealing components, O-rings, bearings and other technical products for industrial manufacturers, maintenance departments, engineers and procurement professionals.

Based in Lublin, Poland, simmering.pl supports worldwide shipping from stock in Poland, subject to product availability and destination-specific shipping arrangements.