York 028-11977-000 O-Ring R-410A Smith 100112840 Connector Board is

Smith 100112840 Connector Board is a critical OEM replacement part engineered for precise electrical signal routing in high-efficiency commercial boilers and water heaters

accommodating most standard HVAC power conductor cables up to 200 A

Optimized for high-pressure applications

Using it on a higher voltage circuit will cause immediate failure of the component

Always handle the new element by the ceramic block to avoid failure

York 028-11977-000 O-Ring R-410A Smith 100112840 Connector Board isThe York 028 11977 000 O Ring is a precision engineered neoprene seal designed for high performance HVACR applications, specifically within York chiller systems and industrial liquid cooled units. Constructed from high grade chloroprene, this 1 inch OEM replacement part provides superior resistance to refrigerants, compressor oils, and common chemical solvents found in heavy duty HVAC environments. Its mechanical properties ensure a robust airtight