O-ring FKM 150x2 FPM Viton - Fluoroelastomer Sealing Ring

Technical Specifications

The nominal outside diameter is calculated as follows:

150 mm + 2 x 2 mm = 154 mm.

This is a geometrically calculated nominal dimension, not a separately verified manufacturing inspection dimension.

The exact FKM compound, Shore A hardness, dimensional tolerances, and permissible operating temperature range require confirmation against the product's technical documentation.

What Does O-ring FKM 150x2 FPM Viton Mean?

FKM and FPM refer to the same general family of fluorocarbon elastomers, although the properties of individual compounds may differ.

Viton is a trademark, not a generic synonym for all FKM materials. The product designation alone does not confirm that the sealing ring is manufactured from a genuine Viton-branded compound.

Construction and Operating Principle

O-ring FKM 150x2 is a continuous elastomeric sealing ring with a circular cross-section and a nominal inside diameter of 150 mm.

When installed in a correctly designed sealing groove, the 2 mm cross-section undergoes controlled compression. The resulting contact pressure between the O-ring and mating surfaces restricts the passage of the working medium through the sealing interface.

Sealing performance depends on:

• Sealing groove geometry and dimensional tolerances.

• Compression of the 2 mm cross-section.

• Stretching of the ring during installation.

• Surface condition and roughness of mating components.

• Operating pressure and extrusion gap.

• Operating temperature.

• Chemical compatibility between the FKM compound and the working medium.

• Compression set of the elastomer during service.

The relatively small 2 mm cross-section combined with a 150 mm inside diameter requires particular attention during installation. Uniform positioning must be maintained, and twisting of the ring should be avoided.

FKM / FPM - Fluoroelastomer Material Properties

FKM is a family of fluorocarbon elastomers used in sealing applications requiring resistance to selected oils, fuels, chemicals, and elevated temperatures.

Appropriately selected FKM compounds generally offer:

• Resistance to many mineral and synthetic oils.

• Resistance to selected fuels and hydrocarbons.

• Good resistance to ozone and atmospheric ageing.

• Suitability for elevated operating temperatures.

• Relatively low gas permeability compared with many general-purpose elastomers.

However, these properties do not imply universal chemical resistance.

Standard FKM compounds may be unsuitable for contact with ketones, certain amines, glycol-based brake fluids, hot water, and steam. Specialised FKM compounds may have different resistance characteristics.

Chemical compatibility must therefore be verified for the exact compound and operating conditions.

No specific operating temperature range or hardness value is assigned to this product without confirmed material documentation.

O-ring FKM 150x2 FPM Viton vs Other Elastomers

Material selection must be based on actual operating conditions.

Replacing FKM with NBR, EPDM, or VMQ requires verification of chemical compatibility and mechanical properties.

Identical dimensions of 150x2 mm do not automatically guarantee interchangeability.

O-ring Selection and Interchangeability

Before selecting O-ring FKM 150x2 FPM Viton, verify the requirements of the sealing application.

Important selection criteria include:

• Inside diameter: 150 mm.

• Cross-section diameter: 2 mm.

• Material: FKM / FPM.

• Exact fluoroelastomer compound.

• Shore A hardness.

• Dimensional tolerances of the sealing ring.

• Sealing groove dimensions and tolerances.

• Required compression and permissible stretching.

• Operating pressure and extrusion gap.

• Operating temperature.

• Chemical compatibility with the working medium.

• Static or dynamic sealing conditions.

Matching the 2 mm cross-section to the groove depth and width is particularly important.

Incorrect compression may cause leakage, excessive deformation, or damage to the sealing ring.

If the equipment documentation specifies a particular Viton compound, its origin and material specification must be confirmed. The generic FKM designation alone does not establish compliance.

Applications of O-ring FKM 150x2 FPM Viton

O-ring FKM 150x2 FPM Viton may be considered for appropriately designed sealing arrangements in:

• Industrial equipment housings and covers.

• Flanged mechanical connections.

• Oil systems operating with compatible fluids.

• Selected fuel system applications.

• Mechanical assemblies requiring a small sealing cross-section.

These are potential application categories based on the O-ring geometry and general properties of fluorocarbon elastomers.

They do not establish confirmed OEM applications for this particular product.

Dynamic sealing applications require additional evaluation of friction, lubrication, operating speed, and groove geometry.

Alternative Designations and Reference Formats

Natural descriptive formats include:

• O-ring FKM 150x2 FPM Viton

• O-ring 150x2 FKM

• O-ring 150x2 FPM

• FKM O-ring 150x2

• FPM Sealing Ring 150x2

• Fluoroelastomer O-ring 150x2

These are descriptive reference formats, not confirmed manufacturer catalogue numbers or OEM part numbers.

The primary product designation remains O-ring FKM 150x2 FPM Viton.

Installation, Handling and Storage

Before installation, clean the sealing groove and inspect the mating surfaces.

During installation:

• Protect the sealing ring from sharp edges.

• Avoid excessive stretching.

• Prevent twisting of the cross-section.

• Position the O-ring uniformly within the groove.

• Use only assembly lubricants compatible with the specific FKM compound and working medium.

• Verify correct seating before closing the assembly.

The sealing rings should be stored in clean conditions, protected against mechanical damage, excessive heat, and aggressive chemicals.

Frequently Asked Questions - FAQ

What are the dimensions of O-ring FKM 150x2 FPM Viton?

The inside diameter is 150 mm, and the cross-section diameter is 2 mm. The geometrically calculated nominal outside diameter is 154 mm.

Are FKM and FPM the same material?

Yes. Both designations refer to the general family of fluorocarbon elastomers. Exact material properties depend on the specific compound formulation.

Is every FKM O-ring manufactured from genuine Viton?

No. Viton is a trademark associated with specific fluoroelastomers, while FKM is a generic material designation. Not every FKM sealing ring is manufactured from a Viton-branded compound.

Is O-ring FKM 150x2 resistant to oils and fuels?

Appropriately selected FKM compounds are resistant to many oils and fuels. Compatibility must be verified for the specific medium, its composition, and operating temperature.

What is the hardness of O-ring FKM 150x2 FPM Viton?

The hardness is not specified in the product designation. Values such as 70, 75, or 90 Shore A should not be assumed without confirmation from technical documentation.

Can O-ring 150x2 FKM be replaced with an NBR O-ring?

Not automatically. Chemical resistance, operating temperature, hardness, dimensional tolerances, and sealing design requirements must be compared before substitution.

Is O-ring FKM 150x2 suitable for high temperatures?

Many FKM compounds are designed for elevated operating temperatures, but the exact permissible range for this particular product requires confirmation.

Is the outside diameter 154 mm?

Yes. This is the nominal outside diameter calculated from the 150 mm inside diameter and 2 mm cross-section. Actual manufactured dimensions depend on production tolerances.

O-ring FKM 150x2 FPM Viton - Key Technical Information

O-ring FKM 150x2 FPM Viton is a fluoroelastomer sealing ring with a 150 mm inside diameter and a 2 mm cross-section. It is intended for appropriately designed sealing arrangements. The FKM/FPM material family offers resistance to selected oils, fuels, and elevated temperatures. Exact compound composition, hardness, and chemical compatibility require verification.

FKM / FPM O-rings at simmering.pl

FKM / FPM O-rings, industrial sealing components, rolling bearings, and mechanical accessories are available through simmering.pl, a specialist B2B trading platform serving industrial companies, engineers, maintenance departments, and technical purchasing teams.

Our warehouse and order processing facilities are located in Lublin, Poland. We provide worldwide shipping from stock in Poland.

Technical product identification and selection assistance is available based on sealing dimensions, elastomer material, hardness, and application requirements.