O-Ring Kit for AquaPro Union Adapter

The AquaPro Union Adapter O-Ring Kit includes 3 different size o-rings. Use the appropriate o-ring to fit one of the three types of AquaPro union adapters found on most AquaPro above ground Sand, Cartridge, and D.E. filter systems as well as on the bottom of the elbow adapter on all AquaPro above ground Cartridge and D.E. filter systems.