Society of British Aerospace Companies Standard AGS1186
Issue: 13
Issue date: 1958
Aerospace Grade AGS1186-13 Bonded Seals for High-Performance Applications
AGS1186-13 bonded seals are aerospace-standard sealing washers designed to deliver reliable, leak-proof performance in high-pressure and high-reliability environments.

What Are AGS1186-13 Bonded Seals?
AGS1186-13 bonded seals are a specialised form of bonded washer designed for aerospace, defence and high-spec engineering applications.
They consist of:
- A precision metal outer washer
- A synthetic rubber sealing element bonded internally
When compressed, the elastomer creates a tight seal, preventing leakage even under extreme operating conditions.
Key Features of AGS1186-13 Bonded Seals
- Manufactured to AGS1186 aerospace standard
- Suitable for high-pressure and critical sealing applications
- Resistant to vibration, temperature fluctuations and aggressive fluids
- Available with approved aerospace-grade compounds (NFL approved)
- Produced under ISO EN9100 quality systems
- High reliability for safety-critical environments
Materials & Specifications
AGS1186-13 bonded seals are available in a range of metal and elastomer combinations to suit different environments:
Metal Options
- Carbon steel
- Stainless steel
- Special aerospace alloys
Elastomer Options
- Nitrile (NBR)
- Viton (FKM)
- EPDM
- Custom aerospace-approved compounds
Each seal is selected based on temperature, pressure and media compatibility to ensure optimal performance.
Applications of AGS1186-13 Bonded Seals
Aerospace & Defence
- Aircraft hydraulic systems
- Fuel and lubrication systems
- Military vehicle components
High-Performance Engineering
- Precision hydraulic assemblies
- Fluid power systems
- High-spec industrial equipment
Oil & Gas & Energy
- High-pressure connections
- Critical sealing environments
These seals are specifically designed for industries where failure is not an option and performance must be consistent under extreme conditions.
Why Choose AGS1186-13 Bonded Seals?
Compared to standard bonded washers, AGS1186-13 seals offer:
- Certified aerospace-grade quality and compliance
- Enhanced durability under extreme conditions
- Improved resistance to pressure and vibration
- Reliable performance in safety-critical systems
They are a trusted solution where precision engineering and regulatory compliance are essential.