Compatibility : This barrel nuts is compatible with Fluval FX2 (A213), FX4 (A214), FX5 (A218), and FX6 (A219) canister filter lid fastener replacement parts. Sized to fit the lid mounting holes and work with the standard bolts used on FX-Series fastener assemblies
Leak Prevention : FX2 FX4 FX5 FX6 filter barrel nuts replacement parts supports O-ring compression by holding the bolt in place and distributing force across the sealing area. Helps reduce water seepage after filter cleaning or lid removal
Durable material：Made of reinforced engineering plastic with good dimensional stability. Withstands frequent tightening without cracking, suitable for aquarium environments with high moisture exposure
Easy Installation：Each barrel nut fits into the filter lid’s mounting sockets and pair with the existing bolts and clamps to help secure the lid during operation
Convenient 10-Pack：Includes 10 barrel nuts—enough to replace a full set on one FX2 FX4 FX5 FX6 quarium filter parts, with extra pieces available for future maintenance or part loss
