---
product_id: 2406497
title: "Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz."
brand: "permatex"
price: "141 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Permatex"
url: https://www.desertcart.dk/products/2406497-permatex-81730-flowable-silicone-windshield-and-glass-sealer-1-5
store_origin: DK
region: Denmark
---

# Waterproof & durable seal Operates -80°F to 450°F Flows into hard-to-reach areas Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz.

**Brand:** permatex
**Price:** 141 kr
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal the deal with confidence—because leaks are so last season!

## Quick Answers

- **What is this?** Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz. by permatex
- **How much does it cost?** 141 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/2406497-permatex-81730-flowable-silicone-windshield-and-glass-sealer-1-5)

## Best For

- permatex enthusiasts

## Why This Product

- Trusted permatex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Leak Hunter:** Flows deep into hidden crevices to seal leaks others miss.
- • **Trusted Pro-Grade Formula:** From windshields to electrical connections, a go-to sealant for automotive pros.
- • **Extreme Temperature Warrior:** Performs flawlessly from freezing cold to scorching heat (-80°F to 450°F).
- • **Shock & Vibration Resistant:** Keeps your seals intact even under the harshest driving conditions.
- • **Invisible Armor for Your Glass:** Creates a crystal-clear, tough seal that stands up to weather and wear.

## Overview

Permatex 81730 Flowable Silicone Windshield and Glass Sealer is a professional-grade, clear silicone sealant designed to create a waterproof, durable barrier that resists extreme temperatures (-80°F to 450°F), vibration, shock, and most chemicals. Its unique flowable formula penetrates hard-to-reach areas, filling surface voids and ensuring a reliable seal for automotive glass, headlights, vinyl tops, and electrical connections. Trusted by automotive enthusiasts and professionals alike, it’s the ultimate solution to prevent leaks and maintain vehicle integrity.

## Description

Permatex Flowable Silicone Windshield and Glass Sealer flows into hidden and hard-to-reach areas while its wicking action silicone 'seeks the leak.' It forms a tough, waterproof, durable, clear seal that is resistant to weather, extreme temperatures, vibration, shock and most shop chemicals. Fills surface voids and irregularities, with a temperature range of -80 degrees Fahrenheit to 450 degrees Fahrenheit. This sealer comes from a trusted line of Permatex sealants for virtually any automotive sealing application, from windshields to vinyl tops to electrical connections. These well-known general-purpose and job specific sealants are cornerstones in the Permatex line.

Review: Great to seal new headlight assemblies. 1.5oz tube is enough for 2 mustang headlights - I recently bought an 04 Mustang and decided to change the headlights rather than restore them. A typical problem noted on replacement headlights is leakage due to poor sealing. After seeing a recommendation ro use this silicone to go over the seal on the new headlights the day before installing them I bought a tube at the same time I bought the headlights here on desertcart. The silicone works great for going over the seams of the lights. There are many areas that you need to get the sealant down into a crevice to cover the actual seam and this worked great. It oozed into place easily and was not so runny to make it difficult or messy to use. I used a liberal amount on the seams so the sealant would cover more than a little and it would sink into the visible gaps from the poor job the manufacturer did on sealing. I did the job on my counter, with no dripping (YMMV as it does ooze slowly and depending on your light, it could drip) or spilling and no strong odors. The silicone settled into place and I was able to let it set for about 30 minutes until it was tacky and no longer oozing before turning the assembly over and doing the opposite side. I let it sit overnight to cure and installed the lights the next day. While it hasn't been long, I did take it through the car wash and do not see any signs of leaks. Great stuff and cheap to ensure your automotive lamp assemblies don't leak.
Review: WORKS GREAT - Works great for sealing leakage around my windshield.

## Features

- Forms A Tough, Waterproof, Durable, Clear Seal
- Resistant To Weather, Extreme Temperatures, Vibration, Shock And Most Shop Chemicals
- Flows Into Hidden And Hard-To-Reach Areas To Seal Leaks
- Fills Surface Voids And Irregularities

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BKEBO0 |
| Best Sellers Rank | #2,014 in Automotive ( See Top 100 in Automotive ) #5 in Body Repair & Restoration Adhesives |
| Brand | Permatex |
| Color | Multicolor |
| Date First Available | January 1, 2008 |
| Department | unisex-adult |
| Global Trade Identification Number | 00686226817303 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 0.01 ounces |
| Item dimensions L x W x H | 8 x 4 x 1 inches |
| Item model number | 81730 |
| Manufacturer | PERMTX-LOCKT |
| Material | Silicone |
| Number of Items | 1 |
| Product Dimensions | 8 x 4 x 1 inches |
| Style | Medium Strength |
| Surface Recommendation | Glass |
| UPC | 079340817302 686226817303 |
| Unit Count | 1.49 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Permatex
- **Item Weight:** 0.01 Ounces
- **Item dimensions L x W x H:** 8 x 4 x 1 inches
- **Material:** Silicone
- **Style:** Medium Strength

## Images

![Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz. - Image 1](https://m.media-amazon.com/images/I/81PiaJkLW6L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: does it work on cell phones ?**
A: 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.

**Q: can this be used to adhere the black strip to the front windshield?**
A: 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.

**Q: Would this work on a car headlight housing to keep away moisture?**
A: Yes it would as the silicone in it would prevent any water from getting in , also depends how big your Crack is .

**Q: Will this work for a glass door that has a small crack (about 2 inches)?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great to seal new headlight assemblies. 1.5oz tube is enough for 2 mustang headlights
*by E***K on July 13, 2019*

I recently bought an 04 Mustang and decided to change the headlights rather than restore them. A typical problem noted on replacement headlights is leakage due to poor sealing. After seeing a recommendation ro use this silicone to go over the seal on the new headlights the day before installing them I bought a tube at the same time I bought the headlights here on Amazon. The silicone works great for going over the seams of the lights. There are many areas that you need to get the sealant down into a crevice to cover the actual seam and this worked great. It oozed into place easily and was not so runny to make it difficult or messy to use. I used a liberal amount on the seams so the sealant would cover more than a little and it would sink into the visible gaps from the poor job the manufacturer did on sealing. I did the job on my counter, with no dripping (YMMV as it does ooze slowly and depending on your light, it could drip) or spilling and no strong odors. The silicone settled into place and I was able to let it set for about 30 minutes until it was tacky and no longer oozing before turning the assembly over and doing the opposite side. I let it sit overnight to cure and installed the lights the next day. While it hasn't been long, I did take it through the car wash and do not see any signs of leaks. Great stuff and cheap to ensure your automotive lamp assemblies don't leak.

### ⭐⭐⭐⭐⭐ WORKS GREAT
*by X***R on February 10, 2026*

Works great for sealing leakage around my windshield.

### ⭐⭐⭐⭐⭐ No more rear window leak.
*by P***L on June 13, 2024*

2019-'23 read sliding windows are notorious for leaking...and that's a nogo because there is a lot of electronics on the back wall of cab that are vulnerable to damage from water intrusion. My Ram 1500 is a 2020 model. The dealership replaced the rear window once under warranty, and exactly 7 days after the replacement we got a hard rain and the leak was back. So, upon the advice of several in the forum I belong to, I bought a case of this permatex flowable silicone. I sealed the crap out of the rear window, third brake light (also known to leak), and the sharkfin antenna on the roof. I'm proud to say that after two high pressure carwashes and tow fairly hard rains, I am leak free thanks to this product. I do have one minor complaint, and that being, on the label it says it dries clear. It does not. It's more of a slightly milky white. It's not that noticeable if you're not looking for it, and quite honestly, I'd rather see a slight hint of sealant rather than have a leaky window. I don't blame the dealership of the installers because they are forced to abide my manufacturer installation procedure. I blame Ram/Stellantis for a faulty install procedure. It's almost like that want it to leak, so the customer will return for more repairs. I'm glad I decided to go with this silicone sealant, because as it should be, I can now leave my truck outside in the rain, or run the truck through a carwash, and not experience leakage. I have several extra tubes...but any homeowners can find a use for some silicone, so it won't go to waste. Good product.

## Frequently Bought Together

- Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz.
- Permatex 81158 Black Silicone Adhesive Sealant, 3 oz. Tube, Pack of 1
- Permatex 80050 Clear RTV Silicone Adhesive Sealant, 3 oz

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**Shop now:** [https://www.desertcart.dk/products/2406497-permatex-81730-flowable-silicone-windshield-and-glass-sealer-1-5](https://www.desertcart.dk/products/2406497-permatex-81730-flowable-silicone-windshield-and-glass-sealer-1-5)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-05*