RectorSeal Duct Seal 81880 Compound, Easily Applied to Plumbing & Metal Fabrication, Paintable General Purpose Sealant, 1 lb

This is a unique product. It works well to seal up holes in electrical boxes with wire passing through. Easy to knead and shape. Not sticky to the hands but stays in place very well. Too soon to tell but seems like it will stay pliable and not harden. Bottom line a great product for sealing up those holes in the wall through out the house where plumbing or wire passes through.

A must have with outdoor electrical work. This stuff is easy to form into whatever shape you need to keep the outside where it belongs and not inside your electrical box.

This product has been great to work with. It’s clean, easy to shape by hand, and doesn’t create a mess. The seller also offers a fair price and ships quickly.

In my opinion, a very underutilized form of sealing. I use it around all types of pipes/wires extending through walls, but by no means is it limited to that. Very easy to use, and long lasting.

I used it to patch holes around my air handler.

This stuff is AWESOME. The 1lb block was easily enough to seal all of the holes around my pipes in the kitchen and 2 bathrooms. Mice cannot get past it. It's like playdoh for consistency. Break off a piece, roll it into a tube and press in place. Looks good too. It's "sticky" but won't stick to your hands. It won't dry out either. I am going to order another block of it to seal a large crack where my garage and house foundation meet. Excellent

Great product for ceiling around plumbing fixtures, without permanently, bonding them, good for ceiling around RV, furnace and hot water heater cover to prevent mouse entry. Will be using this where mice have eroded RV ceiling ductwork to restore, efficiency and cleanliness.

Love this stuff works great for my application, the consistency of the product is nice and firm, looks like it's gonna stay flexible for a while and you don't have to worry about it drying out, it's a nice thick product that will be compatible with a lot of your applications. You can use this for a lot of different things, it'll be compatible with so many of your projects ones especially where you can't use grommets because of space constraints or anytime you need a extra seal on something, this stuff is great, most of all it's not supposed to dry out so that makes it really useful.

was easy to use for putting around pipes coming out of fridges

Good

Product appeared old and was sticky on my hand skin. Finally, after shaping product and leaving it several days to dry, I found product to have hardened, but not hard enough. I could reshape product and it wasn’t a good seal-used around the sides of ducted diffuser. Back to the drawing board. Or, next time you cut your floorboards to install a diffuser for the ducting heating, make sure you know how to use a hacksaw. Try to cut diffuser housing spot-on or you’ll be forced to search for sealants that perform lower tham expected.

I used this to cover the hole with my thermostat wires coming into the thermostat this making the readings more accurate! It works really well, very cheap and will last me a lifetime! Highly recommend!

"I used this to seal around the electrical conduit where it enters my house, and it was so easy to work with. It’s like a soft modeling clay that stays pliable, so you can really pack it into gaps to stop drafts and bugs. Unlike spray foam, it’s not messy and you can actually remove or adjust it later if you need to. Great price for a very effective product!"