O-ring 214x3 FPM/FKM Viton - Fluoroelastomer O-ring

Technical Specifications

The Shore A hardness, exact FKM compound, colour, dimensional tolerances, operating temperature range and maximum working pressure are not established by the supplied product designation.

The use of genuine Viton-branded material has not been independently verified.

What Does O-ring 214x3 FPM/FKM Viton Mean?

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

• 214 mm - nominal inside diameter of the O-ring.

• 3 mm - nominal cross-sectional diameter.

• FPM - designation used for fluorocarbon rubber in technical documentation.

• FKM - designation for the fluoroelastomer material family.

• Viton - a registered trademark associated with specific fluoroelastomer materials, not a universal designation for every FKM product.

The nominal outside diameter is calculated as:

214 + (2 x 3) = 220 mm.

The value of 220 mm is a calculated nominal dimension, not a separately verified measurement of the finished sealing ring.

Important: An FPM/FKM material designation does not automatically confirm that the O-ring is manufactured from genuine Viton-branded compound. Such a claim requires supporting manufacturer or material documentation.

Construction and Sealing Principle

The O-ring 214x3 mm FPM/FKM is a continuous elastomeric ring with a circular cross-section.

When installed in a correctly designed sealing groove, the O-ring undergoes controlled compression between the mating surfaces. The resulting contact pressure helps prevent leakage of the sealed medium.

Sealing performance depends on groove geometry, compression ratio, dimensional tolerances, surface finish, operating pressure and the mechanical characteristics of the FKM compound.

With a nominal inside diameter of 214 mm and a cross-sectional diameter of 3 mm, particular attention should be given to even positioning during assembly to prevent twisting, excessive stretching or localised deformation.

Properties of FPM/FKM Fluoroelastomer Rubber

FKM fluoroelastomers are commonly selected for sealing applications requiring resistance to various chemicals and elevated operating temperatures.

Typical characteristics of the material family include:

• Resistance to many mineral and synthetic oils.

• Compatibility with numerous fuels and petroleum-based products.

• Suitability for elevated temperatures, depending on the compound.

• Good resistance to ozone and atmospheric ageing.

• Relatively low permeability to many gases compared with certain general-purpose elastomers.

• Limited compatibility with certain ketones, esters, amines and other aggressive media, depending on the FKM grade.

Not all FKM compounds offer identical chemical resistance.

Performance depends on polymer composition, curing system, additives and operating conditions.

Without documentation for the specific compound, an exact temperature range or universal chemical compatibility rating cannot be assigned to this O-ring.

O-ring FPM/FKM Compared with NBR, EPDM and MVQ/VMQ

FKM is not automatically the best elastomer for every sealing medium.

For example, appropriately selected EPDM compounds may be preferable in certain water-based or polar-fluid applications.

Material selection must always be based on the actual operating conditions.

Alternative Designations and Search References

The product may appear under the following descriptive designations:

• O-ring 214x3 FPM

• O-ring 214x3 FKM

• FKM O-ring 214x3 mm

• Fluoroelastomer O-ring 214x3

• FPM sealing ring 214x3 mm

• Fluorocarbon rubber O-ring 214x3

• O-ring ID 214 mm CS 3 mm

The term Viton may also appear in commercial descriptions as a reference to fluoroelastomer materials. However, its use does not establish genuine Viton material origin.

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

Selection and Interchangeability

Before selecting the O-ring 214x3 mm FPM/FKM, verify the following technical requirements:

• Nominal inside diameter of 214 mm.

• Cross-sectional diameter of 3 mm.

• Sealing groove geometry and dimensional tolerances.

• Required compression of the elastomer.

• Shore A hardness and compound specifications.

• Operating temperature and pressure.

• Chemical compatibility with the sealed medium.

• Static or dynamic sealing conditions.

• Compression set requirements.

• Risk of extrusion into clearance gaps.

Two FKM O-rings with identical nominal dimensions may differ in hardness, compound formulation, chemical resistance and high-temperature performance.

Identical dimensions do not guarantee full interchangeability.

Typical Applications

FKM O-rings may be considered for properly designed static sealing arrangements, including:

• Flanged connections.

• Equipment covers and housings.

• Selected oil-handling systems.

• Certain hydraulic assemblies.

• Industrial equipment operating with chemically compatible media.

These are general application categories for FKM seals, not verified OEM applications for this specific O-ring 214x3 mm.

Final suitability must be confirmed against the actual operating conditions and the specifications of the supplied compound.

Installation and Handling

Before installation, clean the sealing groove and mating surfaces. Remove burrs, contamination and sharp edges that could damage the elastomer.

Position the O-ring evenly, avoiding twisting, excessive stretching and local damage to the cross-section.

If an assembly lubricant is required, confirm its compatibility with the specific FKM compound and the sealed medium.

During storage, protect the sealing ring from contamination, mechanical damage and unnecessary deformation.

FAQ - Frequently Asked Questions

1. What are the dimensions of the O-ring 214x3 FPM/FKM?

The nominal inside diameter is 214 mm, and the cross-sectional diameter is 3 mm. The calculated nominal outside diameter is 220 mm.

2. Are FPM and FKM the same material?

Both designations refer to the fluoroelastomer family. However, different FKM compounds may have significantly different chemical and mechanical properties.

3. Is every FKM O-ring made from genuine Viton?

No. Viton is a registered trademark for specific fluoroelastomer materials. The FKM designation alone does not verify the use of genuine Viton-branded compound.

4. Is the O-ring 214x3 FKM resistant to oil?

Many FKM compounds offer good resistance to mineral oils and numerous synthetic oils. Compatibility with the specific oil, additives and operating temperature must still be verified.

5. What temperature can the O-ring 214x3 FPM/FKM withstand?

The permissible temperature range depends on the particular FKM compound and operating conditions. Exact minimum and maximum temperatures cannot be reliably specified without material documentation.

6. Can an NBR O-ring 214x3 be replaced with an FKM O-ring?

Not automatically. Although the nominal dimensions may be identical, the elastomers differ in chemical resistance, mechanical characteristics and temperature performance.

7. Is the O-ring 214x3 FKM suitable for dynamic sealing applications?

Suitability depends on the sealing arrangement, movement speed, friction, lubrication and compound properties. Dynamic use cannot be confirmed from the dimensions and material designation alone.

8. What is the Shore A hardness of this FKM O-ring?

The Shore A hardness is not specified in the designation. It must be confirmed in the technical documentation for the supplied product.

O-ring 214x3 FPM/FKM - Key Information

The O-ring 214x3 mm FPM/FKM is a fluoroelastomer sealing ring with a nominal inside diameter of 214 mm and a cross-sectional diameter of 3 mm. Its calculated nominal outside diameter is 220 mm. FKM materials are commonly used where resistance to many oils, fuels and elevated temperatures is required. Exact operating limits depend on the specific compound.

The product can be sourced through the specialist B2B industrial trading platform simmering.pl, supporting industrial procurement and worldwide shipping from stock in Poland, subject to availability.