The NAS1611-012 is an aerospace-standard O-ring seal used in aircraft fluid, hydraulic, fuel, and pneumatic systems to provide a reliable leak-proof seal between mating components. It is commonly installed in fittings, valves, actuators, and system housings where pressure integrity is critical.

This seal is designed as an approved alternative to S-0309-012, providing equivalent dimensional fit and sealing performance depending on aircraft configuration and maintenance requirements. It ensures proper containment of fluids and gases while preventing leakage under pressure, vibration, and temperature changes.

Manufactured from high-performance aerospace elastomer (commonly fluorocarbon/Viton-type material), it offers excellent resistance to hydraulic fluids, aviation fuels, oils, and environmental exposure, ensuring long service life in demanding operating conditions.

Key features include:

NAS1611-012 aerospace O-ring seal
10 pcs maintenance pack
Alternative to S-0309-012
Used in hydraulic, fuel, and pneumatic systems
Provides reliable leak-proof sealing
Fluorocarbon (FKM/Viton-type) material
Resistant to aviation fluids and oils
Suitable for pressure and temperature variation
Designed for vibration and cyclic load environments
Direct replacement per NAS aerospace standards