How can i apply this ao it comes out neat

Make sure surfaces are clean. Work slowly using the smallest opening in the tube you can. Check your spelling before hitting 'send'.

Can this be used to help seal a drainage hole in a resin planter I now want to use as a water feature?

YES it can, as long as it is not too thick. If the hole is large, use a wood plug or short bolt/screw to fill the void and the Permatex as a sealer around it.

Could I put this along the edges of convertible top? I don't want to glue the top on, just improve the seal where rain drips in.

Yes it will work. The best way to seal it is to apply the sealant where you want it to stick, and put vaseline on the other surface so it does not stick. This way it will not be sealed shut. The side with the vaseline will not adhere to the sealant and you will get a gasket so your top can go up and down without tearing it apart once it dries. I hope this makes sense.

Does this work for a crack in a car dashboard?

Probably, it is like black caulk. Sticky to put on. I use a popsicle stick to smear it on a spot the removal part of my car top to fix a leak in the rubber seal. This stuff is flexible and worked great for that.

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We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.

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Description

🖤 Seal it like a pro — black silicone that never quits!

FAST FULL CURE - Achieves a rock-solid, waterproof seal in just 24 hours—no waiting, no worries.
ALL WEATHER RESILIENCE - Withstands extreme temps from -59°C to 232°C for year-round reliability.
UNIVERSAL BONDING POWER - Seals and repairs glass, metal, plastic, vinyl, and more with sensor-compatible silicone.
PROFESSIONAL GRADE PRECISION - 3oz tube delivers controlled application for clean, mess-free repairs every time.
TRUSTED INDUSTRIAL BESTSELLER - Join 10,000+ pros who rate it 4.5 stars for durable, long-lasting fixes.

Permatex Silicone Adhesive Sealant 81158 is a versatile, sensor-compatible black RTV silicone sealant in a 3oz tube, engineered for indoor and outdoor use. It offers a wide temperature tolerance (-59°C to 232°C), waterproof performance, and cures fully in 24 hours, making it ideal for sealing, bonding, and repairing glass, metal, plastic, vinyl, and electrical wiring with professional-grade precision.

Specifications

ASIN	B000AL6WLA
Amazon Bestseller	#31,844 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #133 in Caulk #730 in Contact Adhesives
Brand	Permatex
Brand Name	Permatex
Color	black
Compatible Material	Glass
Container Type	Tube
Customer Reviews	4.5 out of 5 stars 10,748 Your Review
Full Cure Time	24 Hours
Global Trade Identification Number	00686226811585
Item Package Quantity	1
Item Weight	0.2 Pounds
Manufacturer	Permatex
Material	Silicone
Material Type	Silicone
Model	81158
Other Special Features of the Product	Sensor compatible
Special Feature	Sensor compatible
Specific Uses For Product	Seals, bonds, repairs, repairs, fixes, securing and repairing electrical wiring, glass, metal, plastic, fabric, vinyl, weather stripping, vinyl tops Specific Uses For Product Seals, bonds, repairs, repairs, fixes, securing and repairing electrical wiring, glass, metal, plastic, fabric, vinyl, weather stripping, vinyl tops See more
UPC	686226811585
Unit Count	3.0 Ounce
Viscosity	Medium
Volume	3 Fluid Ounces
Water Resistance Level	Waterproof

Reviews

W**R

防水シーリングとして使用

グリルマーカーを付けるためにグリルに穴あけをして裏側の配線ごと接着、防水シーリングとして使用。一晩放置で完全に固まって3ヶ月経ってもグラ付きは無いです。効果は文句無し。ただチューブ製なので作業しているとやがて手が真っ黒になって洗い落とすのが大変になるので手袋が必須です。

18.02.2026

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