ABS plastic handle designed for comfortable grip
Teflon coated adjustable foam control for precision foam dispensing
Teflon coated gun body, gun barrel, needle and dispenser tip.
Teflon coated check valve ball bearing. Teflon adapter basket makes it easier to remove empty foam cans. Cleaning is easier too.
> Teflon Body, Adapter & Barrel
> Quality Parts for Long Life
> Dependable Workhorse
Professional Foam Dispensing Gun
Than Competitor Foam Guns


The FOAM N’ SEAL™ FNS500 is our premium foam dispensing gun used by professionals in the weatherization of residential and commercial buildings.

The dependable FNS500 dispenses consistent foam or adhesive every time, and features precision control of foam dispensing for filling small gaps, cracks and voids. It is also ideal for filling door and window door jamb voids.

The polyurethane foam dispenser is engineered for long life with quality parts and has a Teflon® (PTFE) coated gun body, canister adapter basket, and gun barrel. The internal stainless steel needle rod controlling the flow of foam and check valve are also Teflon coated. The same PTFE material used in non-stick cooking ware is used to coat the pro foam gun. Unlike some competitors that use inferior quality PTFE, we sourced our customized formulated PTFE. The coating is specially formulated with high premium ingredients to achieve an extremely low coefficient of friction (resistance to objects over its surface). In addition, this improves resistance to cold flow or creep, reduces wear friction, and increases PTFE adhesion, coating stiffness, and surface hardness.

The FNS500 foam insulation gun is compatible with most polyurethane foam sealants and adhesives products that use a universal screw-on thread adapter on the top of the foam canister. Foam sealant products that are compatible include Great Stuff Pro, Handi-Foam, Handi-Seal, Touch ‘n Foam and Touch ‘n Seal.

The FNS500 has been thoroughly field tested and has continuously been improved over the years. It has proven itself to be a quality and dependable workhorse in the insulation / weatherization market space.

The FNS500 offers better value and has comparable or superior features when compared to other polyurethane foam gun brands. It is an excellent professional foam gun substitute to the Dow GREAT STUFF™ PRO 13, 14 and 15, Fomo Handi-Tools,  Hilti CF DS-1 Foam Dispenser, and Convenience Touch ‘n Foam™ and Touch ‘n Seal™ Sharpshooter gun foam applicators.


■ Comparable or surpasses all major brand foam dispenser guns on the market
■ Premium gun engineered with thicker gauge metal and quality parts for long gun life
■ TEFLON coated stainless steel canister adaptor, needle and check valve
■ TEFLON coated gun body and barrel for easy foam canister loading and removal
■ Adjustable foam bead control allows variable foam bead size control
■ Foam shut off feature
■ Barbed dispenser tip for use with plastic straw extenders for hard to reach areas.
■ Less foam waste compared to straw dispensers
■ No post-dispensing insulation foam drip
■ Restartable for up to 30 days


■ 12.75″ Length
■ 8.5″ high
■ 11.1 oz
■ Includes two 8″ long flexible plastic straw tubes for extended reach and two 2” narrow tip plastic nozzles for fine foam dispensing. Additional 8″ plastic straws and 2″ narrow tip nozzles are available for purchase via our online store

Optional 8″ plastic extension straw tubes (sold in pack of 5)


Optional 2″ narrow tip nozzle (sold in pack of 10)


* All FNS series foam guns are not compatible with foam sealant and adhesive products that use a plastic straw to dispense foam.


*GREAT STUFF, Fomo Handi-Tools, Touch ‘n Foam and Touch ‘n Seal are all registered trademarks of their respective companies.