The GP300 brass series is typically rated for general purpose fluids

Common symptoms include the heat pump failing to defrost correctly

including Miller E1

ensuring a precise fit and matching performance curve to maintain system integrity

York S1-028-12458-002 Gasket 30067439-890 The GP300 brass series isThe York S1 028 12458 002 Gasket is a critical OEM component designed specifically for sealing condensate drain pans in commercial and residential HVAC units. When performing a drain pan replacement or routine maintenance, maintaining a gastight and watertight seal is essential to prevent secondary damage from localized moisture. This York replacement gasket is engineered from high grade elastomeric material to withstand constant exposure to moisture