O-Ring FPM 774.1x8.4 FKM

Applications

The O-Ring FPM 774.1x8.4 FKM is a high-performance rubber sealing ring designed for very demanding industrial applications where high resistance to temperature, oils, and aggressive chemical media is required. It is primarily used as a static seal and, under suitable operating conditions, as a dynamic sealing element in hydraulic and pneumatic systems, large flange connections, oil circuits, and industrial process installations.

Manufactured from FPM (FKM) fluoroelastomer, this O-Ring provides long-term sealing reliability in environments where standard elastomers such as NBR or EPDM are not sufficient.

Advantages

• FPM / FKM (fluor) material with very high thermal and chemical resistance

• Resistant to mineral and synthetic oils, fuels, greases, and hydraulic fluids

• Excellent resistance to aging, ozone, and environmental influences

• Precise 774.1x8.4 dimensions ensuring secure groove fit

• Widely used as a technical sealing component in hydraulic and pneumatic systems

Technical Data

• Product type: O-Ring

• Material: FPM (FKM)

• Inner diameter: 774.1 mm

• Cross-section: 8.4 mm

• Color: brown

• Sealing type: static and dynamic

Main Description

The O-Ring FPM 774.1x8.4 FKM is an advanced technical sealing solution engineered for operation in environments with very high thermal and chemical load. Made from FPM fluoroelastomer, it maintains sealing performance when exposed to oils, fuels, hydraulic fluids, and a wide range of aggressive industrial chemicals.

This O-Ring is selected wherever a standard rubber gasket cannot provide sufficient durability or operational safety. FKM material is known for its resistance to high temperatures, oxidation, and long-term aging, making it suitable for continuous-duty applications and large-diameter industrial sealing systems.

The large and precise 774.1x8.4 size allows effective sealing of extensive flange joints, cylindrical housings, and oversized grooves used in heavy machinery and industrial installations. The O-Ring is commonly applied in hydraulic and pneumatic sealing, industrial process equipment, energy systems, and maintenance operations where stable sealing parameters and long service life are critical.

For B2B customers, maintenance teams, and technical distributors, this sealing ring offers predictable performance, high durability, and reliable operation in the most demanding industrial environments.

FAQ

What is the main advantage of FPM O-Rings?
FPM offers significantly higher resistance to heat, oils, fuels, and chemicals compared to standard elastomers.

What is the typical operating temperature range?
Usually from about -20°C up to +200°C, depending on operating conditions.

Is this O-Ring suitable for hydraulic systems?
Yes, it is widely used in hydraulic and pneumatic applications, especially for large diameters and high temperatures.

Can it be used for dynamic sealing?
Yes, when properly selected and installed, it can operate in dynamic sealing applications.

Where are very large-diameter FKM O-Rings typically used?
In industrial process systems, energy installations, heavy machinery, and large-scale hydraulic equipment.