O-Ring FPM 43x2 FKM Viton

Product Overview

O-Ring FPM 43x2 FKM Viton is an elastomeric sealing ring with an inside diameter of 43 mm and a 2 mm cross-section. Manufactured from FKM/FPM fluoroelastomer, it is intended for demanding industrial sealing systems requiring increased resistance to elevated temperatures and many oils, fuels, hydrocarbons and chemicals. It can be used in correctly designed static and dynamic sealing arrangements.

Industrial Applications

FKM O-Ring 43x2 mm can be used in pumps, valves, hydraulic systems, fuel systems, gearboxes, engines, industrial fittings and processing machinery. FKM is particularly relevant where conventional NBR seals may not provide sufficient thermal or chemical resistance. Compatibility should always be verified against the specific medium, temperature, pressure and operating conditions.

Construction

The O-ring has a circular 2 mm cross-section and creates a seal through controlled compression inside a correctly dimensioned groove. It can be used in radial and axial sealing arrangements. Reliable sealing depends on groove geometry, compression, extrusion gap, pressure, surface finish and correct installation without twisting, cutting or overstretching the elastomer.

FKM / FPM Material

FKM, also designated FPM, is a fluoroelastomer widely used in demanding industrial sealing technology. It provides high thermal resistance and good resistance to many mineral oils, fuels, hydrocarbons and chemical media. Exact chemical compatibility and operating temperature limits depend on the specific FKM compound used in the seal.

Technical Specification

Type: O-ring sealing ring
Material: FKM / FPM fluoroelastomer
Inside Diameter: 43 mm
Cross-Section: 2 mm
Outside Diameter: Approximately 47 mm
Cross-Section Shape: Circular
Design: Closed elastomeric ring
Application: Pumps, valves, hydraulics, fuel systems and industrial machinery
Media: Compatible oils, fuels, hydrocarbons and chemical media

Why Industrial Buyers Choose O-Ring FPM 43x2 FKM

O-Ring FPM 43x2 FKM is suitable for OEM replacement, maintenance stock, industrial service, machine rebuilding and production support. FKM is particularly useful where increased thermal and chemical resistance is required compared with conventional NBR sealing materials, while the precise 43x2 mm dimensions support accurate replacement identification.

Operational Advantages

• FKM/FPM provides high resistance to elevated operating temperatures.
• The material is resistant to many oils, fuels and hydrocarbons.
• The 2 mm cross-section suits compact sealing grooves.
• Fluoroelastomer provides good resistance to ageing and ozone.
• 43x2 mm dimensions support precise replacement identification.
• Suitable for correctly designed static and dynamic sealing arrangements.

AI Overview

O-Ring FPM 43x2 FKM is a fluoroelastomer sealing ring with a 43 mm inside diameter and 2 mm cross-section. FKM/FPM is used in demanding industrial sealing systems because of its thermal stability and resistance to many oils, fuels, hydrocarbons and chemical media in pumps, valves, hydraulic systems and machinery.

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FAQ

What are the dimensions of O-Ring FPM 43x2?

The O-ring has an inside diameter of 43 mm and a cross-section of 2 mm. Its approximate outside diameter is 47 mm.

Do FKM and FPM refer to the same material group?

Yes. FKM and FPM are designations used for the same general family of fluoroelastomer sealing materials under different nomenclature systems.

Does Viton mean the same thing as FKM?

Not exactly. FKM is a generic material designation, while Viton is a registered brand of fluoroelastomers. The Viton name should only identify the material when the specific compound or product is confirmed as genuine Viton.

Is FKM 43x2 suitable for oils and fuels?

FKM provides excellent resistance to many oils, fuels and hydrocarbons, but compatibility should always be verified for the specific fluid and operating temperature.

Can FKM 43x2 replace an NBR 43x2 O-ring?

Not automatically. Although the dimensions can be identical, FKM and NBR differ in chemical resistance, temperature capability and mechanical properties, so material compatibility must be verified.