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Permatex

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

  • Based on 6,276 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sep 28 – Sep 29
Order within 3 hours and 48 minutes
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Size: 1.5 ounce (Pack of 1)


Style: Medium Strength


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

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.

Material: Silicone


Brand: Permatex


Style: Medium Strength


Item Weight: 1.5 ounces


Item dimensions L x W x H: 8 x 4 x 1 inches


Brand Name: Permatex


UPC: 079340817302 686226817303


Number of Packs: 1


Unit Count: 1.49 Fluid Ounces


Global Trade Identification Number: 03


Number of Items: 1


Included Components: Other Vehicle Parts( AUTO_PART ), Performance Parts - Underhood


Item Type Name: Permatex 81730 1.5 Oz Flowable Silicone Windshield & Glass Sealer


Manufacturer: PERMTX-LOCKT


Model: 81730


Part Number: 81730


Warranty Description: Warranty


Item Weight: 1.5 ounces


Item Dimensions: 8 x 4 x 1 inches


Water Resistance Level: Waterproof


Item Form: Liquid


Compatible Material: Glass, Vinyl


Style Name: Medium Strength


Color: Multicolor


Surface Recommendation: Glass


Material Type: Silicone


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 28 – Sep 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Handy little tube for window leaks
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
Easy fix for my shop’s drafty front door glass. I run a small print store and cold air was sneaking in along the top edge of the window by the counter. Customers sit right there to sign invoices, so that breeze was annoying. I cleaned the gap, ran a small bead of this Permatex, and let it sit overnight. Next morning it was clear and flexible, and the whistle from the wind was gone. I like that the tip is skinny so i can follow the trim line without making a mess. Used the leftover on a small chip around my truck’s windshield and that sealed up fine too. Reallly glad it stays clear. ... show more
Reviewed in the United States on July 22, 2026 by jason wiggins
    • Tiny tube that actually stops leaks
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
This little tube works. I run a gym and bought it for a nagging drip at the top corner of the front door glass. Techs wanted a few hundred to “reseal everything.” I cleaned the channel, squeezed this into the tiny gap, let it flow for a minute, then parked the door open so it could cure. Next storm, zero water on the rubber floor. That alone made me glad. The nozzle is thin so I can run a clean bead without making a mess. It dries clear so members dont notice anything. Ill keep a tube in the office drawer for the next mystery drip. ... show more
Reviewed in the United States on July 5, 2026 by cheryl J.
    • Great product
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
Fixed the issues I had with leaking rear glass on my truck! Easy to apply! Wish after drying it stays clear, but unfortunately it has light white shade (not fully transparent), but I don’t care because it fixed the leak I was fighting for a long time!
Reviewed in the United States on August 31, 2026 by Lesya
    • Good but oversold on capabilities
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
Review Image by Bud
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. ... show more
Reviewed in the United States on July 7, 2010 by Bud
    • Windshield leak fix
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
When I got tired of wiping rain off my dash after night shifts, I grabbed this to seal a tiny leak at the top of my windshield. I cleaned the edge, ran a thin bead, then let it sit while I crashed after work. Drove through a storm later and the inside stayed dry. Glad it just works.
Reviewed in the United States on August 21, 2026 by Meaghan Carter
    • Handy silicone sealer for quick fixes
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
Being someone who often tackles small car repairs, i found this Permatex silicone sealant to be quite helpful. it works well on cracked or leaking windshield edges when i'm on the go. the flowable formula makes application easy and smooth. i appreciate having a reliable, durable option in my toolbox for those unexpected windshield situations. it’s a solid choice for anyone who needs a quick, dependable fix while traveling or in the garage. ... show more
Reviewed in the United States on March 19, 2026 by michael j farner
    • Adhesive
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
Didn't really work for my application. Maybe suited for others.
Reviewed in the United States on April 7, 2026 by Melvyn Newton
    • Work
Size: 1.5 ounce (Pack of 1) Style: Medium Strength
Good 👍
Reviewed in the United States on August 23, 2026 by Esther

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