Gardner Bender DS-530 Duct Seal, 5 lb. Pug,Gray

Used this to seal up my duct work...Just kidding, made a pellet trap. Bought enough for a 1.5-2 inch thick surface on a 14x15 trap. Used 4 5lb packages, 20 lbs total. Tacky, use disposable gloves and pound down with a heavy metal object or rubber mallet. This stuff will last forever, worth every penny. There is nothing that will give you a quiet, safe trap that will last forever than duct seal, period. Inside, outside, rain or shine, cold or hot this stuff takes the shots. Leave pellets in and the trap just gets better and better. When I'm lazy I just stick the paper target right onto the sticky surface and plink away. Mostly shoot an HW30s .177 at target and it hardly breaks the surface of the duct seal, just sticks. Can't ask for more, I have and there is nothing better.

I use this in one of my catch boxes for airguns. I put in two of these things which is strong enough to stop a .22LR bullet fired at 10 yards. The impact is just absorbed and distributed outwards never once denting the thin steel plate in the back of my 12”X12” catchbox. I bought 3 just in case 2 wasn’t enough but the 2 ate just fine. Not to mention it’s way cheaper than similar products made by airgun companies.

I'm using this material, five large blocks, for a pellet catch I fabrication from aluminum plate. The duct seal receives the pellets very quietly and stop them ease.We're only shooting a .22 cal pellet from a Gamo break barrel and this product is perfect. I am using a larger amount than most so the target is a little heavy and this simply adds to the stability.Great product, great price, wonderful company.

Purchased several times before, at sub $12 and amazing price

Works as advertised and seal is well priced

Easy to use, durable, and thick putty. Malleable so you can use it almost anywhere. If you do it right, water can't penetrate.

Unlike seemingly most other reviewers I bought this to actually seal ducts and thecentral air handler of my HVAC system. I wanted to use this for the access panel for easy removal for cleaning. I was leery using this on the central air handler access panel and edge of plenum boxes, I honestly didn't think it would be able to seal againstthe high pressure at these spots. I was very pleasantly surprised, I started out using giant plugs to make sure was effective and then out of curiosity worked down in size, it's perfect. You can roll it into pencil width and push into seams, and/or use golf ball plugs for knockouts or around drain outlet, air seal perfect in both scenarios. I even got some wet (unrelated to product use) on accident- it continued to hold against air leaks and "dried out" back to prior consistency. Never truly hardens and easy to remove with putty knife. 3 weeks in and holding up great, have even removed and reapplied the same stuff and it continues to work great.

I use this in my indoor pellet trap. Stops a medium power (550 fps) pellet dead in it's track. Lasts forever (I have an outdoor trap that has taken well over 10000 shots and still works perfect). Stick to just about everything and does not slump or release. It is a little hard to cut but that's ok as I want that stopping power. Just for an idea of amount you need I built a 12"x12" trap and used 6 Lbs to completely cover the backstop at about 3/4" thick (that stops both my .177 and .22 pistols). This stuff never hardens and only requires an occasional cleaning (I pick out the used pellets and re-spread the areas that have bulged up).

Great stuff, I used it to seal outdoor HVAC Pipes.

Ok

I needed to plug holes and cracks against cockroaches. I used lots of caulk at boundaries and expanding foam for large spaces. This stuff is best for those inbetween gaps and holes. Tears off like thick dough and pushes into gaps and holes.

GOOD QUALITY PRODUCT WILL BUY AGAIN

As the US reviews state, this mostly obsolete duct-sealing agent is essentially ballistic putty. Very good product for eliminating noise and potential ricochet in indoor bb and pellet shooting situations (i.e. 10m target practice in smaller spaces). Works MUCH better on lead pellets than bbs (obvious physics reasons.... boring conversation anyway). Use as needed. Make a trap. Hard to find in hardware stores- requests often lead to intractable confusion- even when the product is officially 'in-stock.'