O-ring 21x2.5 FPM FKM Viton fluor

Industrial applications

The 21x2.5 FPM O-ring made of FKM Viton fluor rubber is designed for sealing applications exposed to aggressive chemicals, high temperatures, and demanding industrial conditions. It is widely used in automotive systems, hydraulic installations, fuel systems, and chemical processing equipment.

This type of O-ring is especially suitable where standard materials such as NBR cannot provide sufficient resistance or durability.

Construction and design

The O-ring 21x2.5 FPM is manufactured from high-performance FKM fluorocarbon elastomer, commonly known as Viton. The material offers excellent chemical resistance and maintains stable mechanical properties across a wide temperature range.

Its precise 2.5 mm cross-section ensures proper sealing performance and reliable fit in standard groove designs. The homogeneous structure guarantees consistent elasticity and sealing efficiency.

Technical parameters

Type: O-ring
Size: 21x2.5 mm
Material: FPM FKM Viton fluor
Hardness: 70 ShA
Temperature range: -20 to +200 degrees C
Resistance: oils, fuels, chemicals, high temperature
Application: industrial, automotive, hydraulic systems

Operational advantages

The 21x2.5 FPM O-ring provides outstanding resistance to oils, fuels, and aggressive chemicals. It maintains sealing performance even under continuous exposure to elevated temperatures.

Compared to standard elastomers, FKM offers superior resistance to aging and degradation, resulting in extended service life and reduced maintenance requirements.

Main description

The O-ring 21x2.5 FPM FKM Viton fluor is a high-performance sealing solution designed for applications requiring resistance to extreme temperatures and aggressive chemical environments.

Within the FPM O-ring category, this size is widely used in systems where reliability and chemical resistance are critical. The 21x2.5 mm dimension is commonly applied in hydraulic systems, automotive components, and industrial machinery where precise sealing is essential.

FKM Viton O-rings are known for their durability and stability under harsh operating conditions. Their ability to resist thermal and chemical degradation makes them a preferred choice in high-performance sealing applications.

In industrial practice, these O-rings are used in fuel systems, chemical installations, and high-temperature environments. As part of the FPM sealing cluster, the 21x2.5 size provides a versatile and reliable solution for demanding technical applications.

FAQ

What is FKM O-ring used for?
For sealing in high-temperature and chemically aggressive environments.

Is Viton resistant to fuels and oils?
Yes, it has excellent resistance to fuels and oils.

What is the operating temperature range?
Approximately -20 to +200 degrees C.

Is FKM better than NBR?
Yes, in high-temperature and chemical applications.

Where is 21x2.5 O-ring commonly used?
In hydraulic systems, automotive applications, and industrial machinery.