O-ring FPM 8x1.5 FKM Viton

Technical specifications

The nominal outside diameter of 11 mm is calculated from the specified dimensions: 8 mm + 2 x 1.5 mm.

FKM and FPM identify the elastomer family but do not specify the exact rubber compound.

Viton is a registered trade name for certain fluoroelastomers. Without manufacturer documentation, the use of genuine Viton-branded material cannot be independently confirmed.

The manufacturer, Shore A hardness, dimensional tolerances, operating temperature range, permissible pressure and packaging quantity have not been established.

What does O-ring FPM 8x1.5 FKM Viton mean?

The designation identifies the sealing ring type, nominal dimensions and elastomer family.

• O-ring - a continuous sealing ring with a circular cross-section.

• FPM - a designation for fluorocarbon rubber.

• 8 mm - nominal inside diameter of the sealing ring.

• 1.5 mm - nominal cross-sectional diameter.

• FKM - internationally recognized designation for the fluoroelastomer material family.

• Viton - a trade name for certain fluoroelastomers, frequently associated with FKM sealing materials.

FKM and FPM refer to the same general family of fluorocarbon elastomers. However, individual compounds may differ in chemical resistance, hardness, flexibility and temperature capability.

Construction and FKM/FPM material properties

The O-ring 8x1.5 mm features a continuous, one-piece elastomeric construction with a circular cross-section.

Sealing is achieved through controlled compression of the ring between mating surfaces. The compressed elastomer generates contact pressure that helps prevent leakage through the sealing connection.

FKM belongs to the family of fluorocarbon elastomers commonly used in demanding industrial sealing applications.

Typical properties of appropriately selected FKM compounds include:

• Resistance to many mineral and synthetic oils.

• Resistance to numerous fuels and hydrocarbons.

• Higher temperature resistance than standard NBR compounds.

• Good resistance to ozone and atmospheric exposure.

• Resistance to many chemicals, depending on the specific formulation.

FKM is not universally resistant to all chemicals.

Certain ketones, amines, esters, hot water and steam may require specially formulated compounds or an alternative sealing material.

Actual chemical compatibility depends on the elastomer formulation, operating medium, temperature and exposure time.

O-ring FKM/FPM compared with other sealing materials

Sealing rings with identical nominal dimensions of 8x1.5 mm are not automatically interchangeable when manufactured from different elastomers.

Typical applications

The O-ring FPM 8x1.5 FKM Viton may be suitable for appropriately designed sealing connections in:

• Valve bodies and industrial fluid control components.

• Static sealing connections in technical equipment.

• Hydraulic systems operating with compatible fluids.

• Housings and covers of small mechanical assemblies.

• Installations using suitable oils and fuels.

• Compact mechanisms requiring small-diameter elastomeric seals.

These are potential applications based on the general construction and material properties of FKM O-rings, not verified OEM applications of this specific product.

Dynamic sealing applications require additional assessment of friction, lubrication, wear and groove geometry.

Selection and interchangeability

Before selecting the O-ring FPM 8x1.5 FKM Viton, verify the following parameters:

• Nominal inside diameter of 8 mm.

• Cross-sectional diameter of 1.5 mm.

• Installation groove dimensions and tolerances.

• Required cross-sectional compression.

• Chemical compatibility with the sealed medium.

• Operating temperature and pressure.

• Required elastomer hardness.

• Static or dynamic sealing conditions.

• Requirements for the specific FKM compound.

Identical nominal dimensions do not guarantee complete technical interchangeability.

Dimensional tolerances, hardness, compression set and chemical resistance must also be considered.

Alternative designations and search references

Common alternative representations include:

• O-ring FPM 8x1.5 FKM Viton

• O-ring FKM 8x1.5 mm

• O-ring 8x1.5 FPM

• FKM sealing ring 8x1.5

• FPM O-ring 8x1.5 mm

• Viton O-ring 8x1.5

• Fluorocarbon rubber O-ring 8x1.5

• O-ring 8x1,5 FKM

These are alternative descriptive designations, not verified manufacturer part numbers, OEM references or confirmed cross-reference numbers.

The term Viton does not independently confirm the origin or brand certification of the elastomer.

Installation and handling

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

Remove contaminants and check that sharp edges or burrs cannot damage the elastomer.

Avoid twisting the ring, excessive stretching and the use of sharp installation tools.

Where assembly lubrication is required, use a lubricant compatible with the specific FKM compound and operating medium.

Store the sealing ring in a clean, dry environment protected from excessive heat, contamination and prolonged mechanical deformation.

FAQ - Frequently asked questions

1. What are the dimensions of the O-ring FPM 8x1.5 FKM Viton?

The nominal inside diameter is 8 mm, the cross-sectional diameter is 1.5 mm, and the calculated nominal outside diameter is 11 mm.

2. Do FPM and FKM refer to the same material?

Yes. Both designations refer to the general family of fluorocarbon elastomers, although individual compounds may have different properties.

3. Is every FKM O-ring manufactured from Viton?

No. Viton is a trade name for certain fluoroelastomers. The FKM designation alone does not confirm the use of genuine Viton-branded material.

4. Is the O-ring FPM 8x1.5 resistant to oils and fuels?

Many FKM compounds offer good resistance to oils and fuels. Compatibility must be verified for the specific operating medium and temperature.

5. What is the operating temperature range of the O-ring FKM 8x1.5?

The operating temperature range cannot be reliably established without information about the exact FKM compound and manufacturer specifications.

6. Can an NBR 8x1.5 O-ring be replaced with an FKM 8x1.5 O-ring?

Not automatically. Despite having identical nominal dimensions, the materials differ in chemical resistance, mechanical properties and temperature-dependent performance.

7. Is the O-ring FKM 8x1.5 suitable for hydraulic applications?

It may be suitable for selected hydraulic sealing connections, provided compatibility with the fluid, groove geometry and operating conditions has been confirmed.

8. Is the O-ring FKM 8x1.5 resistant to hot water and steam?

Resistance depends on the specific compound. Standard fluoroelastomers may have limited suitability for prolonged exposure to hot water and steam.

O-ring FPM 8x1.5 FKM Viton - key information

The O-ring FPM 8x1.5 FKM Viton is an elastomeric sealing ring with an 8 mm inside diameter and 1.5 mm cross-section, manufactured from fluorocarbon rubber (FKM/FPM). This material family is used in sealing applications requiring resistance to many oils, fuels and elevated temperatures. Proper selection requires verification of the specific compound, chemical compatibility and operating conditions.

The product is offered through the specialist B2B industrial trading platform simmering.pl, serving industrial companies, technical purchasing departments and maintenance operations, with worldwide shipping from stock in Poland.