BS EN 3050:2025 Aerospace Series — O-rings, in Fluorocarbon Rubber (FKM), Low Compression Set — Technical Specification

Introducing the BS EN 3050:2025, a comprehensive technical specification that sets the standard for O-rings made from fluorocarbon rubber (FKM) with a low compression set, specifically designed for the aerospace industry. This standard is an essential resource for engineers, manufacturers, and quality assurance professionals who are involved in the design, production, and maintenance of aerospace components.

Key Features

• Standard Number: BS EN 3050:2025
• Pages: 14
• Release Date: January 8, 2026
• ISBN: 978 0 539 32120 3
• Status: Standard

Why Choose Fluorocarbon Rubber (FKM) O-rings?

Fluorocarbon rubber, commonly known as FKM, is renowned for its exceptional resistance to high temperatures, chemicals, and weathering. This makes it an ideal material for O-rings used in the demanding environments of the aerospace industry. The low compression set characteristic of these O-rings ensures that they maintain their sealing integrity over extended periods, even under extreme conditions.

Benefits of FKM O-rings:

• Temperature Resistance: Capable of withstanding temperatures ranging from -20°C to +200°C, making them suitable for a wide range of aerospace applications.
• Chemical Resistance: Excellent resistance to fuels, oils, and hydraulic fluids, ensuring durability and reliability in harsh chemical environments.
• Weathering Resistance: Superior resistance to ozone, UV radiation, and general weathering, which is crucial for aerospace components exposed to the elements.
• Low Compression Set: Ensures long-term sealing performance by minimizing permanent deformation under pressure.

Applications in the Aerospace Industry

The BS EN 3050:2025 standard is specifically tailored for the aerospace sector, where precision and reliability are paramount. These FKM O-rings are used in a variety of applications, including:

• Fuel Systems: Providing reliable sealing solutions in fuel lines and tanks, where exposure to aggressive fuels is common.
• Hydraulic Systems: Ensuring leak-free performance in hydraulic actuators and pumps, which are critical for aircraft control systems.
• Engine Components: Withstanding high temperatures and chemical exposure in engine seals and gaskets.
• Environmental Seals: Protecting sensitive equipment from environmental factors such as moisture and dust.

Comprehensive Technical Specification

The BS EN 3050:2025 standard provides a detailed technical specification that covers all aspects of FKM O-rings, including material properties, dimensional tolerances, and performance criteria. This ensures that manufacturers and users have a clear understanding of the requirements for producing and utilizing these critical components.

Contents of the Standard:

• Material Specifications: Detailed information on the composition and properties of fluorocarbon rubber used in O-rings.
• Dimensional Tolerances: Precise guidelines for the dimensions and tolerances of O-rings to ensure compatibility and performance.
• Performance Criteria: Testing methods and performance benchmarks to verify the quality and reliability of O-rings.
• Quality Assurance: Recommendations for quality control processes to maintain high standards in production.

Conclusion

The BS EN 3050:2025 standard is an indispensable resource for anyone involved in the aerospace industry. By adhering to this standard, manufacturers can ensure that their FKM O-rings meet the highest levels of quality and performance, providing peace of mind to engineers and end-users alike. Whether you are designing new aerospace systems or maintaining existing ones, this standard will guide you in selecting and utilizing the best sealing solutions available.

Invest in the future of aerospace technology with the BS EN 3050:2025 standard, and ensure that your components are equipped to handle the challenges of tomorrow's skies.

BS EN 3050:2025

This standard BS EN 3050:2025 Aerospace series — O-rings, in fluorocarbon rubber (FKM), low compression set — Technical specification is classified in these ICS categories:

• 49.080 Aerospace fluid systems and components

This document specifies the characteristics, qualification and acceptance requirements for O-rings in low compression set fluorocarbon rubber (FKM) to EN 2798.