This 100208091 gasket is fabricated from specialized high-temperature gasket material to withstand the extreme thermal cycling inherent in modulating burner systems

Using a higher or lower microfarad rating will lead to motor inefficiency and will eventually cause the motor windings to fail

For larger 1600 series or 1900 series models

8V drop-out ensures stable operation even with minor control circuit fluctuations

Technicians should replace the orifice if the pilot light appears lazy or yellow

Lochinvar & A.O. Smith 100277953 Volute Gasket This 100208091 gasket is fabricatedThe Lochinvar & A. O. Smith 100277953 Volute Gasket is a critical sealing component engineered for high performance circulating pumps within commercial and residential hydronic systems. This OEM replacement gasket is physically and technically identical to ARM1010 (previously 100133544), ensuring a precision fit for critical pump to volute interfaces. Designed specifically for compatibility with ARM3022PBF pump models, as well as the ARM3024, ARM3072,