Heat Stabilized Nylon Dome Plugs are molded from a Halogen-free, non-toxic nylon material which, in the event of a fire, will not burn and will not produce toxic gases.* They are UV resistant, and self-extinguishing. Their convex, matte finish head tapers to a thin edge, and they are used to close unneeded panel holes.
(* Other parts are available in this material-please consult EFC International for details.)