Grommet Plug, 2pcs

Grommet plugs help reduce your utility costs by providing an airtight seal in your hot tub’s water circuit. Made from fiberglass with a rubber lining, they ensure a watertight connection secured by specialized rivets. Designed specifically for closing the heater water circuit in outdoor hot tubs, these plugs minimize heat loss and maintain water warmth longer. Suitable exclusively for fiberglass hot tubs and hot tub liners.