Explore our aerospace material guide to discover high-performance O-rings, aerospace sealing materials, MIL-Spec and AMS-compliant seals for aircraft engines, hydraulic systems, fuel systems, military defense, and space applications.
Please visit the Aerospace material guide here : ORD-5800-Aerospace-Reference-Chart.pdf
Frequently asked questions
1. What materials are commonly used for aerospace O-rings and seals?
Aerospace O-rings and seals are manufactured from high-performance materials such as fluorocarbon (FKM), fluorosilicone (FVMQ), silicone (VMQ), ethylene propylene diene monomer (EPDM), and perfluoroelastomer (FFKM). These aerospace sealing materials are selected based on temperature resistance, chemical compatibility, pressure requirements, and exposure to aviation fuels, hydraulic fluids, and lubricants.
2. How do I choose the right aerospace sealing material for aircraft applications?
Choosing the right aerospace sealing material depends on operating temperature, pressure, fluid compatibility, environmental exposure, and applicable aerospace specifications. FKM is commonly used in fuel and oil systems, while EPDM is suitable for certain hydraulic fluids and environmental sealing applications. Always verify material compatibility and application-specific requirements before selecting an aerospace O-ring or seal.
3. What are MIL-Spec and AMS-compliant aerospace seals?
MIL-Spec and AMS-compliant aerospace seals are sealing components manufactured or qualified to meet applicable military specifications (MIL-Spec) or Aerospace Material Specifications (AMS). These standards help define material properties, performance requirements, testing criteria, and quality expectations for aerospace applications. Always confirm the exact specification, revision, and qualification requirements for your aircraft, defense, or space program.
4. Which aerospace O-ring materials are best for aircraft engines, fuel systems, and hydraulic systems?
The best aerospace O-ring material depends on the system's operating conditions. Fluorocarbon (FKM) is frequently selected for aircraft fuel, oil, and high-temperature sealing applications. EPDM may be appropriate for compatible hydraulic fluids, while fluorosilicone (FVMQ) is used in certain fuel-resistant, low-temperature applications. Material selection should account for fluid compatibility, temperature limits, pressure, and applicable aerospace standards.
5. What should I consider when selecting aerospace sealing materials for military and space applications?
Military and space applications often require aerospace sealing materials that withstand extreme temperatures, pressure variations, vibration, chemical exposure, and demanding environmental conditions. Consider material qualification, MIL-Spec or AMS compliance, outgassing requirements where applicable, long-term reliability, and traceability. Reviewing these factors helps engineers identify suitable aerospace O-rings and seals for defense equipment, spacecraft, propulsion systems, and other mission-critical applications.