Foamnseal FNS 200&ndash;2 Pack Foam Sealant Dispensing Gun / Tool Two FNS200 gun package. Discounted Pricing. Economical and lightweight Foam control knob for variable foam sealant or adhesive bead size Barbed dispenser tip for extension plastic tubes attachment for tough to reach areas No post-dispensing foam drip. Less foam waste. Restartable for up to 30 days