How often should these gaskets be replaced

While the connector is designed for 5/32" O

the 621931R is the updated OEM replacement relay specifically designed to replace the original 621931 and 6219310 models without any wiring changes

Durable construction resists thermal stress and clogging from fuel impurities

Constructed with high-stability metalized polypropylene film

York S1-025-38737-000 Limit Switch How often should these gasketsThe York S1 025 38737 000 Limit Switch is a critical safety component designed for precise thermal monitoring within York, Luxaire, and Coleman gas furnaces. This automatic reset limit switch is engineered with a trip point range of 140 160F, ensuring the system shuts down the burner if heat exchanger temperatures exceed safe operational limits. As a genuine OEM replacement part, it ensures exact fitment and maintains the original equipments safety