O-Ring FPM 34.2x3 mm FKM Viton Rubber Seal

What Is the O-Ring FPM 34.2x3 mm FKM Viton?

The O-Ring FPM 34.2x3 mm is a high-performance sealing ring manufactured from FPM (FKM, Viton®) fluoroelastomer. Designed for demanding industrial environments, it offers excellent resistance to high temperatures, mineral oils, synthetic oils, fuels, hydraulic fluids and many aggressive chemicals. The dimensions 34.2x3 mm indicate an inside diameter of 34.2 mm and a cross-section of 3 mm.

Applications

The FPM 34.2x3 mm O-Ring is commonly used in:

• Hydraulic systems
• Pneumatic systems
• Pumps
• Valves
• Hydraulic cylinders
• Compressors
• Internal combustion engines
• Gearboxes
• Industrial machinery
• Chemical processing equipment
• Automotive applications
• OEM equipment

Technical Specification

Product Type: O-Ring

Material: FPM / FKM (Viton®)

Inside Diameter: 34.2 mm

Cross Section: 3 mm

Colour: Brown

Hardness: 75 Shore A (unless otherwise specified)

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

Resistance to:

• Mineral oils
• Synthetic oils
• Lubricating greases
• Gasoline
• Diesel fuel
• Hydraulic fluids
• Ozone
• UV radiation
• Weathering
• Many industrial chemicals

Why Choose FPM (FKM Viton®)?

FPM (FKM) is selected for applications where standard NBR rubber cannot provide sufficient resistance to temperature or aggressive media.

Key advantages include:

• Excellent high-temperature resistance
• Outstanding chemical resistance
• Excellent resistance to fuels and oils
• Low compression set
• Excellent ageing resistance
• Ozone and UV resistance
• Long service life
• Excellent dimensional stability

Typical Industrial Applications

The 34.2x3 mm FPM O-Ring is suitable for:

• Chemical industry
• Petrochemical industry
• Hydraulic equipment
• Pneumatic systems
• Automotive engineering
• Power generation
• Industrial machinery
• Process equipment
• Fluid handling systems
• OEM manufacturing

Installation Recommendations

Before installation, verify:

• Groove dimensions
• Sealing surface condition
• Material compatibility
• Operating temperature
• Working pressure
• Proper assembly lubrication

Correct installation helps ensure reliable sealing performance and extended service life.

Frequently Asked Questions (FAQ)

What is the difference between FPM and NBR?

FPM (FKM, Viton®) offers significantly better resistance to high temperatures, fuels, oils and aggressive chemicals than standard NBR.

Is the FPM O-Ring suitable for gasoline?

Yes. FPM provides excellent resistance to gasoline, diesel fuel and many petroleum-based fluids.

Can it be used in hydraulic systems?

Yes. It is widely used in hydraulic systems operating with compatible hydraulic fluids and elevated temperatures.

What is the operating temperature range?

Typically -20°C to +200°C, depending on the specific compound and operating conditions.

Are FKM and Viton® the same?

FKM is the international material designation for fluoroelastomer, while Viton® is a registered trademark for a family of FKM materials.