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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Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz.

Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz.

Product ID: 252053480

Details

Brand
Permatex
Item dimensions L x W x H
20.3 x 10.2 x
Item weight
0.01 Ounces
Material
Silicone
Style
Medium

💧Waterproof seal

🔧Flows into hard-to-reach areas

🌡️Temp range -80°F to 450°F

R475

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal the deal with confidence—because leaks don’t wait!

INVISIBLE TOUGH SEAL - Creates a crystal-clear, durable barrier that stands up to weather and wear.
PRECISION LEAK SEEKER - Flows effortlessly into hidden cracks and crevices to stop leaks at the source.
TRUSTED AUTOMOTIVE ESSENTIAL - From windshields to electrical connections, a go-to sealant for pros and enthusiasts alike.
CHEMICAL VIBRATION RESISTANT - Withstands shop chemicals, shocks, and vibrations without breaking down.
EXTREME TEMPERATURE RESILIENCE - Performs flawlessly from freezing cold to scorching heat (-80°F to 450°F).

Permatex 81730 Flowable Silicone Windshield and Glass Sealer is a 1.5 oz. high-performance silicone sealant designed to create a tough, waterproof, and clear seal. It resists extreme temperatures (-80°F to 450°F), vibration, shock, and most shop chemicals. Its unique flowable formula penetrates hard-to-reach areas, filling surface voids and irregularities, making it ideal for automotive glass, windshields, vinyl tops, and electrical connections.

Specifications

ASIN	B000BKEBO0
Best Sellers Rank	#40,217 in Automotive ( See Top 100 in Automotive ) #162 in Automotive Fillers, Adhesives & Sealants
Brand	Permatex
Brand Name	Permatex
Color	Multicolor
Compatible Material	Glass
Customer Reviews	4.3 out of 5 stars 5,688 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	0.01 Ounces
Item dimensions L x W x H	20.3 x 10.2 x 2.5 centimeters
Item weight	0.01 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

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

A**R

Great product

28.03.2026

N**N

Great for seam sealing tarps and tents

I use this flowable silicone for sealing the seams on my silnylon tents (SeekOutside Tipi, NEMO wagon top), it works great, cures within a few hours and keeps the rain out of my tent. I have also used this product to seal cook custom sewing silnylon tarps. The silicone doesn't crack and remains clear, I have had this applied on multiple tarps and tents for years with no issues or need to reapply. I assume it would be good for using with a windshield too, but my primary experience is with waterproofing outdoor gear.

31.03.2026

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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R475

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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