O-ring FPM 1080x5.7 FKM - Fluoroelastomer O-ring

O-ring FPM 1080x5.7 FKM - Fluoroelastomer O-ring

O-ring FPM 1080x5.7 FKM is a large-diameter elastomeric sealing ring with a nominal inside diameter of 1080 mm and a cross-section of 5.7 mm. It is manufactured from FKM fluoroelastomer, also referred to as FPM. This material is used in sealing technology due to its characteristic resistance profile to elevated temperatures, many oils, fuels and chemical media.

Technical data - O-ring FPM 1080x5.7 FKM

What does O-ring FPM 1080x5.7 FKM mean?

The designation identifies the material and principal dimensions of the sealing ring.

1080 - nominal inside diameter of 1080 mm.

5.7 - nominal cross-section diameter of 5.7 mm.

FKM - designation for the family of fluoroelastomers used in sealing technology.

FPM - an alternative material designation for fluoroelastomer commonly encountered in European technical and commercial documentation.

The nominal O-ring size is:

1080x5.7 mm

Dimensions of the 1080x5.7 O-ring

Inside diameter d1: 1080 mm

Cross-section d2: 5.7 mm

Nominal size:

1080x5.7 mm

The approximate outside diameter of the uncompressed O-ring is:

1091.4 mm

This results from:

1080 mm + 2 x 5.7 mm = 1091.4 mm

The primary dimensional designation remains 1080x5.7 mm.

FKM or FPM - what is the difference?

FKM and FPM are designations associated with fluoroelastomers used to manufacture technical sealing components.

Both abbreviations can be encountered in technical documentation and commercial product descriptions:

FKM

FPM

For this reason, an O-ring with dimensions 1080x5.7 mm may be described or searched for as either:

O-ring FKM 1080x5.7

O-ring FPM 1080x5.7

The material designation should always be considered together with the specification of the actual elastomer compound when precise chemical or thermal performance is required.

FKM, FPM and Viton - do they mean the same thing?

These terms should not be treated as completely interchangeable.

FKM identifies a family of fluoroelastomers.

FPM is an alternative designation used for fluoroelastomer materials.

Viton is a trade name associated with specific fluoroelastomer materials.

For this reason, not every FKM or FPM O-ring should automatically be described as an original Viton O-ring.

If an application specifically requires Viton from a particular manufacturer or a defined fluoroelastomer compound, the material specification of the supplied O-ring should be confirmed.

FKM fluoroelastomer

FKM belongs to the fluoroelastomer family and is widely used in technically demanding sealing systems.

Depending on the specific FKM compound, typical characteristics can include:

• good resistance to elevated temperatures

• good resistance to many oils

• good resistance to many fuels

• resistance to many chemical media

• good ozone resistance

• good weathering resistance

• good resistance to ageing

The exact resistance profile depends on the fluoroelastomer type, compound formulation, operating medium, temperature and service conditions.

Operating temperature of FKM

An exact operating temperature range should not be assigned to this specific O-ring without knowing the precise FKM compound.

Permissible operating temperature depends on factors including:

• FKM type and compound formulation

• operating medium

• exposure time

• pressure

• static or dynamic operation

• seal design

If temperature is a critical selection parameter, the specification of the particular elastomer compound should be verified.

Chemical resistance of FKM

FKM is used in sealing technology partly because of the resistance profile available from fluoroelastomer compounds in contact with many demanding media.

However, FKM should not be considered universally resistant to every chemical.

Before using the O-ring, compatibility of the specific FKM compound should be checked with regard to:

• type of operating medium

• chemical composition

• concentration

• temperature

• pressure

• exposure time

• static or dynamic operation

For aggressive chemical media, material selection should be based on compatibility data for the specific FKM compound.

Design of the 1080x5.7 O-ring

O-ring 1080x5.7 is a closed elastomeric sealing ring with a circular cross-section.

When installed in a correctly designed groove, the ring is compressed between the mating surfaces. Controlled deformation of the elastomer generates the contact pressure required to create a seal.

Because of the large nominal inside diameter of 1080 mm, particular attention should be paid to:

• correct groove dimensions

• uniform positioning around the entire circumference

• prevention of O-ring twisting

• correct compression

• mating surface condition

• compatibility of the material with the operating medium

O-ring 1080x5.7 FKM vs NBR

An FKM O-ring and an NBR O-ring with nominal dimensions of 1080x5.7 mm may be geometrically similar but are manufactured from different elastomers.

FKM is a fluoroelastomer with a characteristic chemical and thermal resistance profile.

NBR is nitrile rubber widely used in many standard technical sealing applications, particularly with compatible mineral oils and greases.

Identical 1080x5.7 mm dimensions do not make FKM and NBR automatically interchangeable.

O-ring 1080x5.7 FKM vs VMQ

FKM and VMQ belong to different elastomer families.

FKM is a fluoroelastomer selected for applications where its particular chemical and thermal resistance characteristics are required.

VMQ is silicone rubber, particularly valued for low-temperature flexibility and resistance to ozone, UV radiation and atmospheric ageing.

Material selection should therefore be based on the operating medium and actual service conditions rather than O-ring dimensions alone.

Typical applications of FKM O-rings

FKM O-rings are used in technical sealing systems where the properties of the selected fluoroelastomer compound correspond to the operating conditions.

They may be used in appropriately designed:

• static sealing arrangements

• flange connections

• housings

• industrial equipment

• systems operating with media compatible with the selected FKM compound

These are typical applications based on the general properties and design of FKM O-rings. They do not confirm the suitability of this specific O-ring for a particular machine, installation or operating medium.

Alternative designations and reference formats

Natural designation and search variants include:

O-ring FPM 1080x5.7

O-ring FKM 1080x5.7

FPM O-ring 1080x5.7

FKM O-ring 1080x5.7

O-ring 1080x5.7 FPM

O-ring 1080x5.7 FKM

Fluoroelastomer O-ring 1080x5.7

Fluorocarbon O-ring 1080x5.7

1080x5.7 FKM O-ring

1080x5.7 FPM O-ring

Viton O-ring 1080x5.7

O-ring Viton 1080x5.7

The term "Viton" may occur as a commercial or search reference, but it does not by itself confirm that the supplied compound is an original Viton material.

Selection and interchangeability

Before purchasing or selecting this O-ring, check:

• inside diameter 1080 mm

• cross-section 5.7 mm

• required FKM/FPM material

• specific elastomer compound where relevant

• operating medium

• operating temperature

• pressure

• static or dynamic operation

• groove dimensions and geometry

• required compression

• requirements of the specific sealing system

An NBR, VMQ, EPDM or other elastomer O-ring with dimensions of 1080x5.7 mm is not automatically interchangeable with the FKM version.

Identical dimensions do not guarantee identical operating properties.

Installation of a large 1080x5.7 O-ring

Because of the 1080 mm inside diameter, uniform positioning of the O-ring around its entire circumference is particularly important during installation.

Avoid:

• twisting the O-ring

• excessive local stretching

• cutting the ring

• pulling it across sharp edges

• contact with burrs

• contamination of the sealing surface

The groove and mating surfaces should be clean before installation.

If an assembly lubricant is used, it should be compatible with both the FKM material and the operating medium.

Storage

The O-ring should be stored in a manner that minimises deformation, contamination and mechanical damage.

For a large-diameter O-ring, avoid prolonged storage in a severely folded, twisted or stretched condition.

The entire circumference of the sealing ring should be inspected before installation.

FAQ - O-ring FPM 1080x5.7 FKM

What are the dimensions of the O-ring 1080x5.7?

The nominal inside diameter is 1080 mm and the cross-section diameter is 5.7 mm. The nominal product size is 1080x5.7 mm.

What is the outside diameter of a 1080x5.7 O-ring?

Based on its nominal dimensions, the approximate uncompressed outside diameter is 1091.4 mm. The primary dimensional designation remains 1080x5.7 mm.

What does FKM mean?

FKM is a designation for a family of fluoroelastomers used to manufacture technical sealing components, including O-rings.

What does FPM mean?

FPM is an alternative designation for fluoroelastomer material commonly encountered in European technical and commercial documentation.

Are FPM and FKM the same type of material?

Both abbreviations are used in relation to fluoroelastomer sealing materials. For precise technical selection, the actual compound specification should also be considered.

Is every FKM O-ring a Viton O-ring?

No. Viton is a trade name associated with specific fluoroelastomer materials. An O-ring identified as FKM should not automatically be declared to be made from original Viton unless the compound specification confirms this.

Can a 1080x5.7 NBR O-ring replace the FKM version?

Not automatically. Although the nominal dimensions may be identical, NBR and FKM have different chemical and thermal resistance characteristics.

What should be considered when installing an O-ring with a 1080 mm inside diameter?

The ring should be positioned uniformly around its entire circumference without twisting or excessive local stretching. Groove cleanliness, geometry, surface condition and correct compression are also important.

O-ring FPM 1080x5.7 FKM - key information

O-ring FPM 1080x5.7 FKM is a large-diameter fluoroelastomer sealing ring with a 1080 mm inside diameter and 5.7 mm cross-section. FKM/FPM identifies the fluoroelastomer material family. For correct selection, compatibility of the specific compound with the operating medium, temperature, pressure and sealing conditions should be verified.

Available from simmering.pl, a specialist supplier of industrial sealing solutions. Stock in Poland with worldwide shipping.