Resideo HPSR101 Relay 320735-701 Do I need a packing

Do I need a packing nut with this well

Will this fix a "no spark" condition in my Bard unit

Additional Information:

ensuring consistent hydronic heating control across multi-zone residential and light commercial applications

Resideo HPSR101 Relay 320735-701 Do I need a packingThe Resideo HPSR101 Relay is a heavy duty single zone switching relay designed for demanding hydronic heating applications and general purpose cooling systems. Engineered to replace standard single pole relays, this unit features a 120V input and high performance DPDT switching capabilities. It provides reliable control for circulator pumps, boiler burners, and indirect water heaters by effectively bridging the gap between low voltage thermostats and