The Dust Plug is a must-have accessory for your Milcarb Wingnut Coupler P/N MC-C12-12F. This steel plug comes with an O-ring seal, which ensures that your coupler is protected from debris and particulate matter that can damage the seals and shorten its lifespan. By using this dust plug, you can keep your coupler in perfect working condition, ensuring that your Liquid CO2 delivery is safe and efficient. The plug is easy to install and remove, and it will help you avoid costly repairs and replacements in the future. Order your Dust Plug for Wing-Nut Coupler today and enjoy peace of mind knowing that your equipment is well-protected.