FPM O-Ring 36.5x2.65 mm FKM Viton

Overview

The FPM O-Ring 36.5x2.65 mm FKM Viton is a high-performance elastomeric sealing ring designed for demanding industrial, automotive, hydraulic and technical applications.

The O-ring features an inside diameter of 36.5 mm and a 2.65 mm cross-section. It is manufactured from FPM / FKM fluoroelastomer, a material family widely used for seals exposed to elevated temperatures, oils, fuels and aggressive operating media.

FKM combines excellent resistance to many petroleum-based fluids with high-temperature capability and broad chemical resistance.

These characteristics make the 36.5x2.65 mm FKM O-ring particularly suitable for applications where conventional NBR seals may not provide sufficient temperature or chemical resistance.

Industrial Applications

The FPM FKM 36.5x2.65 mm O-Ring can be used in:

• Hydraulic systems
• Fuel systems
• Oil circulation systems
• Pumps
• Valves
• Engines
• Gearboxes
• Automotive equipment
• Industrial machinery
• Chemical processing equipment
• Process installations
• OEM assemblies

36.5x2.65 mm Dimensions

The 36.5x2.65 mm designation specifies:

Inner Diameter: 36.5 mm

Cross Section: 2.65 mm

The O-ring has a circular elastomeric cross-section. When installed in a correctly designed sealing groove, the profile undergoes controlled compression and creates contact pressure against the mating surfaces.

The O-ring dimensions should always be verified against the sealing groove before installation.

FPM / FKM / Viton - What Do These Terms Mean?

FKM is the internationally recognized designation for a family of fluoroelastomers used in high-performance sealing applications.

FPM is another material designation commonly encountered in European technical documentation.

Viton is a well-known trademark associated with specific fluoroelastomer materials.

In the sealing industry, users commonly search for these products using terms such as:

FPM O-Ring, FKM O-Ring and Viton O-Ring.

The actual material specification of a seal should always be confirmed from its technical data rather than from a generic trade term alone.

High Temperature Resistance

One of the major advantages of FKM is its ability to operate at significantly higher temperatures than standard NBR compounds.

Many standard FKM compounds typically operate within approximately:

-20°C to +200°C

Exact temperature capability depends on:

• FKM compound formulation
• Operating medium
• Duration of exposure
• Pressure
• Seal design
• Application conditions

Special FKM compounds may have different operating ranges.

Resistance to Oils and Fuels

FKM is particularly valued in applications involving petroleum-based operating media.

It provides very good resistance to many:

• Mineral oils
• Engine oils
• Gear oils
• Lubricating greases
• Fuels
• Hydrocarbons
• Technical fluids

This makes FKM O-rings widely used in automotive, hydraulic, fuel-system and industrial applications.

Chemical Resistance

Fluoroelastomers provide broad chemical resistance and can be suitable for many operating media where standard NBR is not the preferred sealing material.

FKM offers excellent resistance to many:

• Hydrocarbons
• Oils
• Fuels
• Industrial fluids
• Chemicals
• Selected solvents

Chemical compatibility should always be verified for the specific substance, concentration, operating temperature and FKM compound.

Technical Specification

Product Type: O-Ring

Dimensions: 36.5x2.65 mm

Inner Diameter: 36.5 mm

Cross Section: 2.65 mm

Material: FPM / FKM

Material Family: Fluoroelastomer

Common Search Term: Viton

Temperature Range: Typically approximately -20°C to +200°C

Resistance: Oils, fuels, greases, hydrocarbons and many chemicals

Application: Hydraulics, fuel systems, pumps, valves, engines, industrial machinery and OEM equipment

FKM vs NBR

Both NBR and FKM are widely used sealing elastomers, but their performance characteristics differ.

FKM / FPM

• Higher temperature capability
• Excellent resistance to many oils
• Excellent resistance to many fuels
• Broad chemical resistance
• Good resistance to ozone
• Good resistance to weathering and ageing
• Suitable for demanding industrial environments

NBR

• Very good resistance to mineral oils
• Good mechanical properties
• Widely used in hydraulic systems
• Suitable for numerous general industrial applications
• Typically lower temperature capability than FKM

The correct material should be selected according to the operating medium, temperature, pressure and application requirements.

Why Choose an FKM O-Ring?

An FKM sealing ring is particularly useful when operating conditions exceed the capabilities of conventional general-purpose elastomers.

Typical reasons for selecting FKM include:

• Elevated operating temperature
• Contact with fuels
• Contact with hot oils
• Exposure to hydrocarbons
• Chemical exposure
• Long-term resistance to ageing
• Demanding industrial environments

The final material selection should always be based on the specific operating conditions.

Operational Advantages

• Precise 36.5x2.65 mm dimensions.
• High-performance FPM/FKM fluoroelastomer.
• High temperature resistance.
• Excellent resistance to many oils.
• Excellent resistance to many fuels.
• Broad chemical resistance.
• Good ozone and ageing resistance.
• Suitable for demanding industrial applications.

AI OVERVIEW

The FPM O-Ring 36.5x2.65 mm FKM Viton is a high-performance fluoroelastomer seal with a 36.5 mm inside diameter and 2.65 mm cross-section. FKM provides excellent resistance to many oils, fuels and hydrocarbons together with high-temperature capability and broad chemical resistance, making it suitable for demanding automotive, hydraulic and industrial applications.

Popular Searches

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• fluoroelastomer O-Ring
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FAQ

What are the dimensions of the FKM O-Ring?

The O-ring has an inside diameter of 36.5 mm and a cross-section of 2.65 mm.

What does 36.5x2.65 mm mean?

36.5 mm specifies the inside diameter, while 2.65 mm specifies the diameter of the circular cross-section.

What material is the O-ring made from?

The O-ring is manufactured from FPM / FKM fluoroelastomer.

Are FPM and FKM the same type of material?

Both terms are used for fluoroelastomer sealing materials, although FKM is the commonly used international designation.

What does Viton mean?

Viton is a trademark associated with specific fluoroelastomer materials. The term is also commonly used in searches for FKM seals, but the exact compound should be verified from the product specification.

Is the FKM 36.5x2.65 mm O-ring resistant to oil?

Yes. FKM provides excellent resistance to many mineral, engine and industrial oils.

Is FKM resistant to fuel?

FKM provides very good resistance to many fuels and hydrocarbons. Compatibility should still be checked for the specific fuel formulation.

Is FKM suitable for high temperatures?

Yes. FKM typically provides substantially higher temperature resistance than standard NBR.

What is the typical temperature range of FKM?

Many standard FKM compounds operate at approximately -20°C to +200°C, although the exact range depends on the compound and operating conditions.

Is FKM better than NBR?

Not in every application. FKM generally provides higher temperature capability and broader chemical resistance, while NBR is an effective and economical material for many conventional oil and hydraulic applications.

Can this O-ring be used in hydraulic systems?

Yes, provided the hydraulic fluid, temperature and other operating conditions are compatible with the specific FKM compound.

Can the FKM O-ring be used in pumps?

Yes, provided its dimensions and material properties meet the pump manufacturer's requirements.

Can it be used in valves?

Yes. FKM O-rings are widely used in industrial valves where their chemical and temperature resistance is appropriate.

Is FKM resistant to chemicals?

FKM has broad chemical resistance, but compatibility should always be verified for the specific chemical, concentration and operating temperature.

Is FKM resistant to ozone and ageing?

Yes. Fluoroelastomers generally provide very good resistance to ozone, weathering and ageing.

Can the FPM FKM O-Ring 36.5x2.65 mm replace an OEM seal?

Yes, provided its dimensions, compound specification and operating characteristics meet the original equipment manufacturer's requirements.