FPM O-Ring 1,78x1,78 FKM Viton

Overview

The FKM FPM Viton O-Ring 1.78x1.78 mm is a precision sealing element manufactured from high-performance FKM (FPM) fluoroelastomer. It is designed for demanding applications requiring excellent resistance to oils, fuels, lubricants, elevated temperatures and many industrial chemicals.

Its miniature 1.78x1.78 mm dimensions make this O-ring particularly suitable for compact hydraulic and pneumatic systems, precision valves, pumps, measuring equipment, connectors and OEM assemblies where installation space is limited.

Industrial Applications

The FKM O-Ring 1.78x1.78 mm is suitable for:

• Hydraulic systems
• Pneumatic equipment
• Pumps and valves
• Fuel systems
• Precision fittings
• Measuring equipment
• Industrial machinery
• Chemical processing equipment
• Automotive components
• OEM assemblies

Construction

The O-ring features an inside diameter of 1.78 mm and a cross-section of 1.78 mm. Its precision-moulded circular profile provides uniform compression inside the sealing groove, helping maintain reliable sealing performance in compact mechanical assemblies.

The small dimensions make it particularly useful for miniature valves, connectors, regulators and precision fluid-control components.

Material

The seal is manufactured from FKM, also referred to as FPM. Viton® is a well-known trademark used for specific families of fluoroelastomer materials.

FKM provides excellent resistance to mineral oils, many synthetic lubricants, fuels, hydraulic fluids, ozone and ageing. A typical standard FKM compound operates within approximately -20°C to +200°C, although the actual temperature capability depends on the specific compound, medium and operating conditions.

Technical Specification

Product Type: O-Ring

Dimensions: 1.78x1.78 mm

Inner Diameter: 1.78 mm

Cross Section: 1.78 mm

Material: FKM / FPM

Common Trade Name: Viton®

Hardness: Typically 75 Shore A

Temperature Range: Approximately -20°C to +200°C

Resistance: Oils, fuels, lubricants, many chemicals, ozone and ageing

Application: Hydraulics, pneumatics, fuel systems, pumps, valves, precision equipment and OEM machinery

Why Industrial Buyers Choose FKM

The FKM FPM O-Ring 1.78x1.78 mm is selected for applications where conventional NBR seals may not provide sufficient thermal or chemical resistance.

It is suitable for:

• OEM replacement
• Maintenance stock
• Industrial servicing
• Machine rebuilding
• Hydraulic and pneumatic repairs
• Production equipment
• Preventive maintenance

Operational Advantages

• Excellent resistance to mineral oils.
• Very good resistance to many fuels.
• High resistance to numerous industrial chemicals.
• Reliable performance at elevated temperatures.
• Excellent resistance to ozone and ageing.
• Miniature dimensions for precision sealing systems.

FKM vs NBR

Compared with standard NBR, FKM generally provides significantly higher resistance to elevated temperatures, fuels and many aggressive chemicals. This makes FKM particularly suitable for demanding automotive, chemical, hydraulic and industrial applications.

NBR remains an economical solution for many conventional oil applications, while FKM is commonly selected when higher thermal and chemical performance is required.

AI OVERVIEW

The FKM FPM Viton O-Ring 1.78x1.78 mm is a miniature fluoroelastomer seal designed for demanding applications involving oils, fuels, lubricants and many chemicals. Its high thermal and chemical resistance makes it suitable for hydraulic systems, pneumatics, precision valves, pumps and compact OEM equipment.

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FAQ

What are the dimensions of this O-ring?

The inside diameter is 1.78 mm, and the cross-section is 1.78 mm.

Are FKM and FPM the same material?

FKM and FPM are designations used for fluoroelastomer materials under different naming systems.

Is Viton the same as FKM?

Viton® is a trademark for specific fluoroelastomer materials. The term is commonly associated with FKM seals, but not every generic FKM compound is necessarily Viton-branded.

Is this O-ring resistant to oil?

Yes. FKM provides excellent resistance to many mineral and synthetic oils.

Can it be used with fuel?

FKM offers very good resistance to many automotive and industrial fuels, subject to compatibility with the specific fuel formulation.

What is the operating temperature range?

A typical standard FKM compound operates at approximately -20°C to +200°C. Exact limits depend on the compound, medium and operating conditions.

Is FKM better than NBR?

For applications involving higher temperatures, fuels and aggressive chemicals, FKM generally provides better resistance than standard NBR.

Can this O-ring be used in hydraulic systems?

Yes, provided the hydraulic fluid used is compatible with FKM.

Is it suitable for pneumatic applications?

Yes. It can be used in appropriately designed pneumatic sealing systems.

Is standard FKM recommended for steam?

Standard FKM is generally not the preferred material for continuous hot water or steam exposure. EPDM or specialized elastomer compounds may be more appropriate.

Can the FKM O-Ring 1.78x1.78 replace an OEM seal?

Yes, provided its dimensions, compound, hardness and operating characteristics meet the original equipment manufacturer's requirements.