CMP Pressure Test Plug [FG Main Drain] (25215-900-000) laingthermotech When the original cartridge reaches

When the original cartridge reaches the end of its useful life

supporting more convenient operation and a smoother overall control experience

8 ounce sealant tube in gray is designed for sealing and repair applications where a single tube provides the right amount for the project

but to get it running the way it should

Supports cleaner and more dependable system management

CMP Pressure Test Plug [FG Main Drain] (25215-900-000) laingthermotech When the original cartridge reachesThe CMP Pressure Test Plug [FG Main Drain] is a practical replacement test plug for service work where matching the original configuration matters more than making a broad, generic substitution. It is used around drain or main drain service points where correct sizing and compatibility help simplify testing, winterizing, or water movement through the pool or spa system. Key identifying details from the listing include FG Main Drain. Because many CMP,