The AS3209-143 is an aerospace-standard O-ring seal (preformed packing) used in aircraft hydraulic, fuel, oil, and filter systems to provide a reliable leak-proof seal between mating components. It is commonly installed in filter housings, valve assemblies, fittings, and fluid system connections where maintaining pressure integrity is essential.

Manufactured from aviation-grade elastomer materials, the seal is designed to withstand exposure to hydraulic fluids, fuels, lubricants, temperature variations, and vibration encountered in aircraft operations. Its precision dimensions ensure proper fit and dependable sealing performance in critical applications.

Key features include:

AS3209-143 aerospace standard O-ring seal
Used in hydraulic, fuel, oil, and filter systems
Provides reliable leak-proof sealing
Common in filter housings and valve assemblies
Resistant to aviation fluids and lubricants
Designed for pressure and temperature variations
Durable aircraft-grade elastomer construction
Supports long-term sealing performance
Suitable for vibration and cyclic load environments
Direct replacement per AS3209 specification