Whats the difference between the red and black?

It depends on your application. The black is generally used where oil is present like valve cover gasket. Red is high temperature but not as high as copper. Blue is multipurpose but I wouldn’t use it near heat. Grey is good for water pumps and thermostat. I hope this helps.

Can this be used as gasket sealer on a cut-to-fit gasket material?

Yes most definitely . Just apply a bead around where needed and give it just a few minutes to kind of set up a little (you can touch it without it sticking) no problem . Makes a clean installation. Thanks for asking

Is this good fro sealing submersible trailer light lenses? thank you

The most I know, that it could be applied for outside conditions, like onto a window, it’s good. For sealing for it to be submersion I can not say!

how well do this hold up to atf+4?

That shouldn't be no problem as long as it is fully cured. I wouldn't try plugging a hole or anything like that but it is great.

Pro Seal 4301702 80044 Rtv Silicone Instant Gasket 500 Degree

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

VT4757

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In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Seal it fast, drive with confidence!

EXTREME HEAT DEFENSE - Performs flawlessly from -80°F to 600°F, keeping your engine cool under pressure.
COMPACT READY TO USE - 1 oz. tube fits perfectly in your toolkit for on-the-go repairs and maintenance.
UNIVERSAL FLUID SHIELD - Resists oil, antifreeze, grease, and transmission fluid—compatible with all automotive models.
INSTANT LEAK PROOF SEAL - Create durable, leak-proof gaskets in seconds—ditch cork, felt, and rubber for good.
MADE IN THE USA QUALITY - Crafted with precision and reliability, trusted by professionals nationwide.

Pro Seal 4301702 80044 RTV Silicone Instant Gasket is a high-performance, black silicone paste designed to create leak-proof gaskets instantly. It withstands extreme temperatures from -80°F to 600°F and resists oil, antifreeze, grease, and transmission fluids, making it safe for all automotive models. This compact 1 oz. tube replaces traditional gasket materials like cork and rubber, offering a durable, water-resistant seal made in the USA.

Specifications

ASIN	B00IBRTDMA
Best Sellers Rank	#690,879 in Automotive ( See Top 100 in Automotive ) #194 in Gasket Sealers
Brand	Pro Seal
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (75)
Date First Available	July 27, 2009
Global Trade Identification Number	00876416115047
Is Discontinued By Manufacturer	No
Item Form	Paste
Item Weight	1.76 ounces
Item dimensions L x W x H	5 x 4 x 0.5 inches
Item model number	4301702
Manufacturer	Pacer
Manufacturer Part Number	4301702
Material	Silicone
Number of Items	1
Product Dimensions	5 x 4 x 0.5 inches
Style	Compact
UPC	050291800445 876416115047
Unit Count	1.0 Count
Water Resistance Level	Water Resistant

Reviews

M**A

Great product

This product works great I bought it as sealant for my gasket valve cover I recommend it I haven't had a leak and it's almost been a year

2.02.2025

J**S

Good product

5.09.2025

P**Y

Seals

Works as required.

27.12.2025

R**K

Much cheaper than a gasket.

Works great. Apply a small bead around small engine case to assure seal of gasket from oil seepage.

19.04.2025

C**Y

retired tech here.

This is the best sealer they make. You can put it onto oil pans and put the bolts tight . No leaks ever . This is a must in any garage . What i always ordered

8.06.2025

R**Y

Perfect

Worked perfect to install my new sponsons on my PWC.

19.07.2024

P**Z

Muy bieno

12.07.2024

T**.

SUCKY

sucked

27.07.2025

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

VT4757

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered 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 Vanuatu.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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