---
product_id: 2406497
title: "81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz."
brand: "permatex"
price: "R$146"
currency: BRL
in_stock: true
reviews_count: 10
category: "Permatex"
url: https://www.desertcart.com.br/products/2406497-81730-flowable-silicone-windshield-and-glass-sealer-1-5-oz
store_origin: BR
region: Brazil
---

# Waterproof seal Temp resistant -80°F to 450°F Flows into hidden crevices 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz.

**Brand:** permatex
**Price:** R$146
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal the deal, stop the drip — your glass’s new best friend!

## Quick Answers

- **What is this?** 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz. by permatex
- **How much does it cost?** R$146 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/2406497-81730-flowable-silicone-windshield-and-glass-sealer-1-5-oz)

## 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

- • **Leak-Seeking Silicone:** Flows deep into hard-to-reach gaps, ensuring no leak escapes its grip.
- • **Shock & Vibration Proof:** Maintains integrity under constant movement and harsh vibrations—perfect for automotive use.
- • **Trusted Pro-Grade Formula:** From windshields to headlights, join thousands who rely on Permatex for flawless sealing.
- • **Extreme Temperature Warrior:** Performs flawlessly from freezing -80°F to scorching 450°F without cracking or peeling.
- • **Invisible Armor for Your Glass:** Creates a crystal-clear, durable seal that withstands weather and chemicals.

## Overview

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 most chemicals, it flows into hidden crevices to stop leaks effectively. Ideal for windshields, headlights, and other glass applications, this 1.5 oz tube offers a reliable, durable solution trusted by automotive pros.

## 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: Incredible Solution for Leaky Windshields - This product worked wonders for me! After dealing with a persistent leak in my windshield for months and considering an expensive replacement, just one application during three heavy rainstorms did the trick. I absolutely love how it completely sealed the leak. This cost-effective solution truly delivers on its promises, and I highly recommend it to anyone facing similar issues.

## 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 | #3,028 in Automotive ( See Top 100 in Automotive ) #6 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

![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.

### ⭐⭐⭐⭐⭐ Incredible Solution for Leaky Windshields
*by K***A on November 18, 2025*

This product worked wonders for me! After dealing with a persistent leak in my windshield for months and considering an expensive replacement, just one application during three heavy rainstorms did the trick. I absolutely love how it completely sealed the leak. This cost-effective solution truly delivers on its promises, and I highly recommend it to anyone facing similar issues.

### ⭐⭐⭐⭐ Good but oversold on capabilities
*by B***D on July 7, 2010*

From the package: "Specially formulated wicking action silicone. Flows into hidden and hard-to-reach leaks around glass..." I did not find that it really wicked at all. To me, it is just a more runny RTV silicone sealant. Because is thinner, it will flow somewhat into nooks better than you can squeeze normal silicone sealant yourself. This, overall, seems to contribute to a better seal, so it might be the best product for the application, but it is not anywhere as great as the description might lead you to believe. Also, because it is runny, it is better used on small gaps and where the application is horizontal. If at an angle or vertical, it will tend to run out and drip. You might be better off with two light applications based on this. Based on its performance to claims, I'd give it a bit under 4 stars. One problem that this product (and most Permatex products) has is that it comes with a cut-off nozzle to apply the sealant. After you are done, there is no way to seal up the tube. Unfortunately, this makes it more of a one-time-use product and not so good if you want/need to do multiple applications because you still have a leak and/or the product leaked/ran out. I sealed the tip up extremely well with electrical tape, and it barely lasted overnight. (I had to cut some more of the tube off). Some other products (GE, I think) have a replaceable, screw cap over a pointed nozzle which would be much better. This probably knocks it down to 3 stars since it is not that cheap and not widely available. Finally, it claims to be odor-free. While it is vastly better than the pungent smell of acetic acid, it is not odor-free, but not really bad at all. Very-low odor would be more accurate, although smell is lesser important to me, I round back up to 4 stars. See my customer image of some landscape lights I was trying to seal from irrigation spray (which keeps corroding/ruining them). You can see that it flows better into crevices, but that it also has a tendency to run out. Hope you find my review useful.

## 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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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-18*