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Your cart is empty.Great Stuff™ Extreme Seal is the ultimate flexible rubber sealant engineered with the professional in mind. Formulated with Kevlar®, Extreme Seal is designed to withstand extreme conditions and provide extra strength seals. Use to fix roof leaks, seal windows and doors, patch cracks in basement foundations - the list goes on! Common applications include gutters & downspouts, skylights & windows, roofing, chimney & flashing, foundation weatherizing, awnings, rust protection, truck beds, campers, undercarriage, and more.
Char
Reviewed in the United States on January 5, 2025
Used it to undercoat my 2002 Silverado.
Mountaingoatee
Reviewed in the United States on August 27, 2024
Purched the 3 color 3 pack to seal roof vents. The white didn't have a steel ball in it to mix. The spray button rolled off the roof 2 times. Also,it was hard to get an even coat as where it was pointed the over powered air pushed it away from the targeted area. I'll NEVER recommend this product, nor will I buy from this company again.
JB-Retired CEO Municipal Refuse Collection System
Reviewed in the United States on June 20, 2024
Sealing west-facing Garage Door- Mother Nature rules-
joel
Reviewed in the United States on March 3, 2024
My tumbler is made put of pvc plastic tubing. See it in the picture. Ingenious right. So now that you are gonna head to your favorite hardware store to build your own don't forget to order a cam of this, it is literally liquid rubber and it's tough as it gets. I know mine shows wear from the rollers but it's only one coat and the pictures make it look way worse than what it's like in person. Also sprayed on the inside, positives sense aplied: noticeble cushioning of rocks preventings cracks and breaks✅️ alot quieter check✅️, grips the rollers way better no slippage✅️, my rubber cap seals incredibly well now✅️, after all four cycles it hasn't worn down on the inside at all✅️ contributed to the Kevlar protection not being a lie and happens to be the real deal✅️. Not positive sense aplied: nothing✅️, notta✅️, zero things✅️! It's good shishcabob!!🛒✅️👌👍✊️🤘🤜🤛💪
Marshgator
Reviewed in the United States on February 29, 2024
I exected a much thicker liquid to plug some very small holes but this doesn't accomplish that purpose. Sprays like a hair spray in viscosity.
Jim N
Reviewed in the United States on December 7, 2024
Great stuff says it all.
Gwendolyn Stodghill
Reviewed in the United States on April 21, 2024
I will continue to use for several projects. Easy to use and store, the usage is great; meaning, filling the space and coverage with the color of choice. The seal, and zero messiness. However, when using, make sure your area is well ventilated and you are wearing a mask and eye protection
Brenda
Reviewed in the United States on October 8, 2023
Had to wear a mask an wore gloves. Left the cars outside for 2 days. The black strips had a super seal. A job well done.
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