The Therm standard flange hardware and gasket kit is designed for compatible heater service work where the flange sealing and fastening components need to be replaced together. Kits like this are useful because they help renew both the hardware and the sealing elements at the same time instead of relying on worn reused parts.This replacement is especially useful when the original hardware is corroded, incomplete, or stripped, or when the flange gasket is flattened, cracked, or no longer sealing reliably. A combined kit can make service more efficient and help produce a cleaner finished repair.It is a practical maintenance item when restoring dependable flange sealing and fastening is part of a more complete heater rebuild. Therm standard flange hardware and gasket kit Helps restore flange sealing and fastening together Useful when original hardware or gaskets are worn or damaged Supports cleaner and more complete heater service Improves confidence in flange-area repairs