Our billet aluminum NMO antenna mount cap allows you to seal your NMO antenna mount against corrosion and water ingress while you do not have an antenna installed. Caps are machine from 6061 aluminium, and type 2 anodized either clear or black. Each cap includes 2 o-rings (one for our mounts and one for roof mounts) and silicone o-ring lubricant to keep the seal from drying out.
