does it work on cell phones ?

I used the permatex 81730 flowable silicone on a cracked screen on an ipad. The corner of the ipad had hit a hard surface and fractured the corner without interfering much with the rest of the screen. I thought I would try the flowable silicone and see how well it worked. I was mainly hoping to keep small pieces from slowly falling out and destabilizing the rest of the glass in the corner. The flowable silicone works as promised. When applied it flows out over the affected area much better than regular silicone. However, it doesn't permeate the crack and basically sits on top of the glass itself. In my experience it did stabilize the corner but left a raised place above the glass that obviously felt like silicone and eventually began peeling off. I eventually had to peel it off the surface of the glass and I haven't as yet replaced it. That's all the info I can share about it... but that was my experience.

can this be used to adhere the black strip to the front windshield?

100%. It gets messy on your hands but it will do its job. I did on my windshield which had a gap and the air was coming in while driving... After sealing it.... It is perfect.

Would this work on a car headlight housing to keep away moisture?

Yes it would as the silicone in it would prevent any water from getting in , also depends how big your Crack is .

Will this work for a glass door that has a small crack (about 2 inches)?

YES---but it will run down if not masked off. Not perfectly clear. Any run down or thick area can be trimmed/shaved off with razor. The crack needs some open space for the fluid to penetrate.

Permatex 81730 Flowable Silicone Windshield And Glass Sealer 1 5

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🔧 Seal the deal before the drip steals your focus!

COMPACT POWER TUBE - 1.5 oz size fits perfectly in your toolkit for quick, on-demand sealing emergencies.
PRECISION LEAK HUNTER - Flowable silicone wicks into hidden cracks and crevices for a flawless fix.
EXTREME WEATHER WARRIOR - Withstands brutal temps from -80°F to 450°F, keeping leaks locked tight year-round.
SHOCK VIBRATION RESISTANT - Durable enough to handle daily driving shocks and shop chemicals without fail.
INVISIBLE ARMOR FOR YOUR GLASS - Creates a crystal-clear, tough seal that blends seamlessly with your windshield.

Permatex 81730 Flowable Silicone Windshield and Glass Sealer is a durable, waterproof silicone sealant designed to flow into tight, hidden areas and form a clear, weather-resistant barrier. It withstands extreme temperatures (-80°F to 450°F), vibration, shock, and most shop chemicals, making it ideal for automotive glass sealing and leak repairs.

Specifications

ASIN	B000BKEBO0
Best Sellers Rank	#43,821 in Automotive ( See Top 100 in Automotive ) #164 in Automotive Fillers, Adhesives & Sealants
Brand	Permatex
Brand Name	Permatex
Color	Multicolor
Compatible Material	Glass
Customer Reviews	4.3 out of 5 stars 5,704 Reviews
Global Trade Identification Number	00686226817303
Included Components	Other Vehicle Parts( AUTO_PART ), Performance Parts - Underhood, Engine Parts/Gaskets/Seals/Bearings
Item Dimensions	20.3 x 10.2 x 2.5 centimeters
Item Form	Liquid
Item Type Name	Fog Light Mount
Item Weight	1.5 Ounces
Item dimensions L x W x H	20.3 x 10.2 x 2.5 centimeters
Item weight	1.5 Ounces
Manufacturer	Permatex
Material	Silicone
Material Type	Silicone
Model	81730
Number of Items	1
Part Number	81730
Style	Medium Strength
Style Name	Medium Strength
Surface Recommendation	Glass
UPC	079340817302 686226817303
Unit Count	1.5 Ounce
Warranty Description	Manufacturer Warranty
Water Resistance Level	Waterproof
Water resistance level	Waterproof

Reviews

A**R

Item was open

I received an opened item that was patched up with tape

26.01.2022

J**G

Handy little tube for window leaks

Already tired of the tiny drip from my home office window, i grabbed this and fixed it on a Saturday before emails piled up again. The tip lets me run a thin bead along the glass edge, then I just nudge it in with a card. No more draft on my keyboard, which made me really glad I tried it bc I can work in a hoodie, not a coat.

9.07.2026

M**N

Lättare att jobba med i separat spruta.

Jag tappade över till en spruta. Silikonen var lättjobbat och flöt ut bra. Jag kommer att beställa det på nytt.

10.11.2025

L**.

Spettacolare

Silicone unico mai visto nella del genere

9.03.2026

Z**N

Good

15.07.2026

P**H

Good product

Very good super product I use this car front glass for water leaks Now there is no leakage …. Even single drop no leakage

9.05.2026

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1 month ago

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