Rated 4.9 out of 5 by 17
Rated 5.0 out of 5.0 by Alm Used not as intended
I make bullet traps out of this stuff and it's awesome. Stops a 9mm from 30 yards at 3/4 inch deep.22 rimfire never hits the steel backing.
October 24, 2016
Rated 5.0 out of 5.0 by Socal Playdoh for grown up
Use this to seal recess cans voids. The recess can manufacture did not do good enough job with this.
March 25, 2016
Rated 5.0 out of 5.0 by zelgall Metal horn damping
Duct seal is ideal for damping the ringing in some metal horns. It can be molded into the bell ends and one block is enough to completely damp ringing for an Altec 811 or 511 horn.
November 19, 2015
Rated 5.0 out of 5.0 by Jimmy Great for sealing up Electrical Conduit run from Basement to Garage.
This is just what I needed. There was a conduit that runs between my basement cinderblocks and garage to run electrical wire. The previous owner ran it. But I guess due to the spacers between the concrete deteriorating there was water getting into my basement when it would rain. I quickly identified this issue and used this to seal the area around the electrical wire going into the PVC conduit. It worked like a charm. No more leaks. When the weather gets warmer I will apply the 1/2 inch backer rod between the cement blocks and Polyurethane Construction Adhesive Sealant (Gray) to prevent water from re-entry into the ground beneath the concrete in my back patio leading to the garage.
January 13, 2015
Rated 5.0 out of 5.0 by Starsport Alternative uses
Duct seal is an incredibly useful and stupid-proof product, but has more outside the box uses. Duct seal is also known as ballistic putty and is frequently used in overpriced "silent targets" for airguns. Using some bricks and a plywood box, you can make a silent BB/pellet trap for a fraction of the cost of a retailer version. Although it will need to be cleaned after quite a few hundred shots, it will be worth the silent shooting. Just remember to always use a proper backboard capable of stopping any missed shots without causing damage to your surroundings. The putty will also contain the lead dust from harder-hitting airguns loaded with lead pellets, making a safer target if children or pets are present. It can also be used to mount various devices to other surfaces such as fish finders and GPS units to vehicles, but it is not recommended that you use this with more expensive smart devices, for those it is safer to get the proper mounting equipment. The last use for this product I will cover is not recommended, but the bricks do look surprisingly like C-4 plastic explosive, so for all you Counter-Strike fans out there looking to do some role-play, pick up a few bricks, some wire and a keypad to make a disturbingly realistic replica of a demolition charge. Remember this is not recommended and can get you in serious trouble with the authorities if used irresponsibly. Overall, an excellent product that should be kept around the house just in case you need to seal up some ductwork or your airgun trap. Would highly recommend.
July 17, 2015
Rated 5.0 out of 5.0 by sclptr Pellet Gun Trap
Didn't use the product as intended on ductwork, but it makes a great backstop for a BB/pellet gun target. Made a plywood box (with proper backstop), screwed a paper clamp to the top front edge and fit the duct seal compound in the back of the box, 2" thick. No ricochet, no noise and the ammo never goes more than halfway through the compound. At some point I'll have to remove the blocks and turn them around but that will be several hundred rounds in the future. Cheap and easy indoor target trap! Great product for this alternative use!!
December 21, 2014
Rated 5.0 out of 5.0 by Boris Very easy to use and works great.
Got this seal to plug some holes in the old tar-type sealer in the ducts around the furnace/AC. It is very sticky and pliable, so it was easy to apply even around the old seals. Tested with running the AC fan, and no air was leaking. I also use it to plug the hole in the outside wall where the condenser pipes are going into the house. It was easy, but I am wondering how this product will stand up to exposure to moisture, rain, snow etc.
September 18, 2014
Rated 5.0 out of 5.0 by Tyler where has this been my whole life! ?
this product is amazing. I have been battling rust and corrosion in my pickup and had been searching for a product to seal out the weather. (1970 ford) this stuff is exactly what I needed. less than five bucks for a brick of glory. I used it around taillights Windows windshield a couple gaps in door openings . . . perfect temporary fix until I can afford proper rubber seals. leaves no residue and reusable. endless possiBilities. It's basically super Play Doh for adults.
November 20, 2013