The standout feature is the universal zip nut

Constructed from galvanized steel

Can I use an aftermarket foam tape instead

and this switch provides the necessary protection against restricted airflow or blower failure

Heil Quaker ICP 1070066 Pressure Switch Els PW 17895 The standout feature is theThe Heil Quaker ICP 1070066 Pressure Switch is a critical safety and performance component designed for specific ICP, Heil, and Quaker heating and cooling systems. This Low Pressure Switch operates with a precise Cut Out (CO) of 100 PSI and a Cut In (CI) of 250 PSI. Built for high reliability refrigeration and HVAC applications, this SPST pressure control monitors the system? s refrigerant levels to prevent compressor damage due to low pressure