would gasoline eat it? Wondered if it could fix a gas line.

Yes - gas would eat it, the only thing that will fix a gas line is a new one....

Is this rear differential lubricant compatible?

Permatex 81409 High Temp Red RTV is a Sealant. It is one the most widely used gasket compounds. Made from silicone, RTV is air curing, it seals, bonds waterproofs, fills surface irregularities, remains flexible, doesn't shrink, is relatively easy to remove, and is used as supplementary sealer with almost all low and medium temperature gaskets. It used on the gasket or gaskets of differential. Compatible is not in question because it used on the gasket or gaskets which are outside the flange of differential. I hope that this answer your question. Please let me know if this helps.

Can I seal a knife cut on a rubber roller on a laminator

I was told by my furnace repair man that this is a 5 star

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81409 High-Temp Red RTV Silicone Gasket, 11 oz.

Product ID: 2943437

Details

Brand
Permatex
Color
Red
Full Cure Time
24 Hours
Item Weight
0.4 Pounds
Liquid Volume
11 Fluid

⛽resists automotive & shop fluids

🔥650°F intermittent heat resistance

🛠️forms crack-resistant, formed-in-place gaskets

R1089

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 heat-proof confidence!

VERSATILE APPLICATION - Ideal for valve covers, oil pans, timing covers, water pumps, and more—your all-in-one gasket solution.
EXTREME HEAT ENDURANCE - Withstands scorching temps from -65°F to 650°F, perfect for heavy-duty engines.
FLUID RESISTANT FORMULA - Engineered to repel oil, coolant, and other harsh automotive fluids for long-lasting reliability.
OEM TRUSTED PERFORMANCE - A proven classic since the '70s, meeting original equipment manufacturer specs for peace of mind.
FLAWLESS SEAL EVERY TIME - Creates durable, formed-in-place gaskets that resist cracking, shrinking, and migration.

Permatex 81409 High-Temp Red RTV Silicone Gasket Maker is a professional-grade sealant designed for extreme temperature ranges (-65°F to 650°F intermittent). It forms durable, crack-resistant gaskets that resist fluid damage and thermal cycling, making it ideal for automotive heavy-duty applications like valve covers and oil pans. Trusted by OEMs since the 1970s, it ensures superior torque retention and sensor-safe performance for modern engines.

Specifications

ASIN	B000HBIB80
Best Sellers Rank	#41,330 in Automotive ( See Top 100 in Automotive ) #35 in Gasket Sealers
Brand	Permatex
Customer Reviews	4.6 4.6 out of 5 stars (265)
Date First Available	April 1, 2004
Exterior	Per Item Description
Item Weight	6.4 ounces
Item model number	81409
Manufacturer	Permatex
Manufacturer Part Number	81409
Model	81409
OEM Part Number	81409
Product Dimensions	1.88 x 1.88 x 11.25 inches

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