Broad Compatibility: Serving as a genuine Source1 part

but compatibility depends on the specific orifice size and body material

significantly reducing callbacks for premature component failure

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

Lochinvar & A.O. Smith 100277953 Volute Gasket Broad Compatibility: Serving as aThe 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,