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.

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Sold byAmazon KUWAITDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💪 Seal the deal, stop the drip—drive leak-free in style!

PRECISION LEAK SEEKER - Flowable silicone wicks into hidden gaps and irregular surfaces for flawless sealing.
WEATHERPROOF CONFIDENCE - Withstands rain, shock, vibration, and harsh chemicals—your car’s ultimate defense.
EXTREME TEMPERATURE WARRIOR - Performs reliably from freezing -80°F to scorching 450°F without cracking or peeling.
TRUSTED AUTOMOTIVE ESSENTIAL - From classic cars to daily drivers, a go-to sealant trusted by pros and enthusiasts alike.
INVISIBLE ARMOR FOR YOUR GLASS - Creates a crystal-clear, durable seal that blends seamlessly with your windshield.

Permatex 81730 Flowable Silicone Windshield and Glass Sealer is a professional-grade, clear silicone sealant designed to create tough, waterproof seals on automotive glass and surfaces. Resistant to extreme temperatures (-80°F to 450°F), vibration, shock, and chemicals, it flows into hard-to-reach areas to fill cracks and voids, ensuring long-lasting leak protection. Ideal for windshields, vinyl tops, and electrical connections, it’s a trusted solution for maintaining vehicle integrity and performance.

Specifications

ASIN	B000BKEBO0
Best Sellers Rank	#7,492 in Automotive ( See Top 100 in Automotive ) #31 in Automotive Fillers, Adhesives & Sealants
Brand	Permatex
Customer Reviews	4.3 4.3 out of 5 stars (5,642)
Date First Available	7 August 2012
Exterior	Machined
Item Weight	0.28 g
Item model number	81730
Manufacturer	Permatex
Manufacturer Part Number	81730
Model	81730
OEM Part Number	81730
Product Dimensions	20.32 x 10.16 x 2.54 cm; 0.28 g
Special Features	Waterproof

Reviews

A**R

Item was open

I received an opened item that was patched up with tape

26.01.2022

A**R

My classic car had a pool of water in footwell after I forgot cover. I used this sealant around windscreen and waited for rain . Car now free of leaks , easy to apply and very effective.

13.10.2025

M**N

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

10.11.2025

S**T

I discovered this silicone is thinner than what I usually use, making it easy to apply when repairing a cracked headlight on my car. It spread evenly and settled nicely, creating a good seal. Even after some cold, rainy days, the repair looks fine and there are no leaks. It was a handy fix that kept me from replacing the entire headlight assembly.

10.04.2026

L**.

Silicone unico mai visto nella del genere

9.03.2026

M**A

As expected

24.01.2020

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