Propane LP BBQ Grill 20-40lb Tank Valve Threaded Plugs w/ Chain Tethers, 4-Pack, Made in USA

4 Threaded Plugs with 10-inch Chain Tethers are designed for 20-40 lb. LP Gas Grill tanks. They are compatible with any cylinder ranging from 4 to 40 LB that has an OPD/QCC1 valve. These plugs ensure that nothing, including water, enters your valve once installed. The silicone O-ring creates a seal so tight that not even water can penetrate. This means no more dust, dirt, insects, mud daubers, water, or grease to contend with. It's crucial to keep the internal rubber seals of your OPD/QCC1 clean for an optimal seal when connecting your appliance, whether it's a grill, buddy heater, camp stove, LP Generator, or any other device. These plugs, unlike the dust caps placed over the valve end, remain secure and won't dislodge once tightened. It is important to note that these plugs are not designed to hold pressure.