The AERCO Boiler and Water Heater 84017 Condensate Trap O-Ring is a replacement sealing component designed for condensate traps used in AERCO Benchmark boilers and Innovation and ReCon water heaters. Installed beneath the trap cover, the O-ring creates a secure seal that helps prevent condensate leakage while maintaining proper trap operation. It is commonly used during routine conden... https://www.partshnc.com/aerco-boiler-and-water-heater-84017-condensate-trap-o-ring