McDonnell & Miller 302500 Gasket The 310137 is technically identical

The 310137 is technically identical to the 310137/U universal designation

the York S1-7990-3591 is a critical OEM furnace limit switch designed for precision thermal monitoring

UL-Classified Component: Maintains the original manufacturer's safety certifications for FOVHN fire dampers

Precision Fit: Engineered as a genuine 100208085 replacement to ensure zero-tolerance sealing on Lochinvar Knight KB models and A

Standardized Fit: 0

McDonnell & Miller 302500 Gasket The 310137 is technically identicalThe McDonnell & Miller 302500, also identified by model number CO 11, is a high performance Sylphon base gasket engineered for a precise seal in steam and hydronic applications. Designed specifically for compatibility with Series 63 and E 28 low water cut offs, this six hole replacement component facilitates a leak proof interface between the bellows assembly and the float head chamber. In the field, maintaining the integrity of the LWCO replacement