The SilencerCo AC88 Booster Assembly O-Ring Pack provides essential replacement seals for your suppressor maintenance needs. These black rubber O-rings ensure proper sealing and performance in booster assembly applications.SilencerCo AC88 Booster Assembly O-Ring PackBlack rubber construction for durability2-pack quantity for replacement needsCompatible with Octane/Osprey suppressor modelsEssential maintenance component for optimal suppressor functionPerfect for routine maintenance and repair of SilencerCo suppressors ensuring continued reliable performance and proper sealing of booster assemblies.