• Product Details
    A unique gun for a unique project, Great Stuff Pro™ Gasket Dispensing Gun is the reusable dispensing gun built solely to apply gaskets with professional accuracy. Unlike other dispensers, it can be cleaned with a garden hose, making maintenance a breeze.
    • Lightweight, durable plastic handle and body
    • Flow-control mechanism dispenses beads from 1/8” to 3”
    • Non-stick coated can adapter and needle
    • Large flow control knob with secured back-screw system
    • Replaceable smooth dispensing nozzle
    • Easy to use trigger for quick dispensing
    • No-drip dispensing
    • Includes hose adapter
  • Q.

    Can I clean the Great Stuff™ Blue gun?


    The water-based product can be cleaned from the Blue handled gun with the cleanout adapter provided in the Great Stuff Pro™ Dispensing Gun packaging. Remove the empty can, dispense residue from the gun, screw the adapter into the gun's basket, screw this assembly onto a garden hose or similar source of water.

    • Flush 4-8 oz of water through the gun until it runs clear.
    • The gun can be left wet, or excess water blown out with 10-20psi compressed air if available.
    • Dispose of the rinse water as you would the washings of a latex paint brush. Do not dump into sewer, on ground or in a body of water.

    How can I store Great Stuff Pro™ Gasket if I don't use the entire can?


    The can may be left attached to the Blue Great Stuff Pro™ Dispensing Gun for up to 90 days. Close the adjustment dial and store up-right where the can will not be punctured. To restart, shake vigorously for 60 seconds, dispense a small amount of foam into a trash can until normal bead expansion is observed.  Proceed with normal application


    The Great Stuff Pro™ Gasket Gun looks similar to Great Stuff Pro™ polyurethane foam guns. Can I use one of those?


    No. Great Stuff Pro™ Gasket is water-based, whereas one-component polyurethane reacts with water to cure. Mixing the two would permanently clog the gun.

    The Great Stuff Pro™ Gasket Dispensing Gun has a Blue Handle which matches the Blue Collars on its can. This is a visual check to only use Blue Guns with Blue Collars, and Black Guns with Black Collars.


    Is Great Stuff Pro™ Gasket available in straw cans?


    No, Great Stuff Pro™ Gasket is only dispensed with the special gun identifiable by its blue handle.

    • Best results if used when product temperature ranges from 60-90°F. Do not allow it to freeze.
    • If the can sputters, simply shake it some more with the can upside down.
    • Great Stuff Pro™ Gasket can be cleaned with just water. Do NOT use Great Stuff™ Foam Cleaner with Great Stuff Pro™ Gasket or the Drywall Dispensing Gun. Instead, use the included hose adapter to flush water through the gun into an appropriate waste receptacle.
    • Let cure before the drywall is installed. It is recommended to let Great Stuff Pro™ Gasket sit overnight as it can take up to 20 hours for full cure in high humidity situations.
    • Do not use any other Great Stuff Pro™ products in the Drywall Gasket gun.
    • Use a 1/2" wide bead for best results.
    • The bead will shrink and wrinkle in high humidity. However, as long as the bead maintains at least a 1/8” height, it will perform as designed, depending on the framing.
    • If humidity exceeds 70%, we recommend a target bead of 5/8”-3/4”. Do not exceed a 3/4” initial bead to prevent sagging.

When to Use



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A flexible, water-based, one-component foam designed to form an interior gasket between framing lumber and drywall to improve air sealing performance.



The all-in-one solution for professionals to quickly fill and larger cavities, sealing out moisture, dust and pests.



A two-component, quick-cure polyurethane foam that fills cavities, penetrations and cracks greater than 2" and less than 4" wide.