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Home / Household & Personal Cleaning Tools / Sealing Clay for AC Holes, Wall Patching and Filling, Drain Pipe Leak Prevention, White Waterproof Sealing Compound
Household & Personal Cleaning Tools

Attributes

Brand -
Category Root / Household & Personal Cleaning Tools
Origin -
Material High-density waterproof polymer clay
Color White
Weight 300g per pack
Water Resistance IP68 Rated Waterproof
Application Temperature -20°C to 80°C
Drying Time Surface dry in 2 hours, fully cured in 24 hours
Adhesion Strength Strong bond on concrete, plastic, and metal
Package Contents 1x Sealing Clay Block, 1x Application Spatula
Shelf Life 24 months unopened
Usage Area AC holes, wall cracks, drain pipes, window gaps

6 reviews

A

Anonymous

Mar 22, 2026

Rating: 4/5

Good value, takes time to harden

Works well for filling small holes in the bathroom wall. Just remember it stays soft for a couple of hours, so don't touch it right after applying. Once set, it's very solid.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Saved me from a leaky pipe

Had a minor drip under the sink where the pipe meets the wall. This clay sealed it up perfectly. It's white so it blends in nicely with my tiles too.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Excellent weather resistance

Applied this to an exterior wall crack before the rainy season. It has held up perfectly through heavy storms without cracking or washing away.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for AC gaps!

I used this to seal the gap around my window AC unit. It was incredibly easy to mold by hand and stopped the draft immediately. No more bugs coming in!

A

Anonymous

Mar 11, 2026

Rating: 5/5

Easy to use for DIYers

No mixing required! Just take a chunk, knead it, and press it into the hole. Great for someone like me who isn't handy with traditional spackle.

A

Anonymous

Mar 05, 2026

Rating: 4/5

Effective but messy hands

The product works exactly as described for sealing drain pipes. My only complaint is that it can get a bit sticky on your fingers while applying, but water cleans it off easily.

5 FAQ

Q: How much area does one 300g pack cover?

A: One 300g pack can typically fill approximately 10-15 standard AC hose holes or about 2 linear feet of narrow cracks, depending on the depth of the application.

Q: Will this stick to wet surfaces?

A: For best results, the surface should be clean and dry. While it has some adhesion to damp surfaces, applying it to a dry area ensures the strongest waterproof bond.

Q: Can I reuse the clay if I take it out of the package?

A: Yes, as long as you keep the remaining clay in its original airtight packaging or a sealed bag, it will remain pliable for future use until its shelf life expires.

Q: Can this be painted over once it dries?

A: Yes, once the sealing clay is fully cured (after 24 hours), it can be painted over with standard latex or oil-based paints.

Q: Is this safe to use on drinking water pipes?

A: This product is designed for external sealing and leak prevention on drain pipes and walls. It is not certified for direct contact with potable drinking water inside the pipe.

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