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Gasket sealers: how to seal the gasket in your car

The gasket is an often overlooked area of car maintenance. Unlike an oil change, many people find it difficult to repair a gasket at home, and a blown gasket can cost you hundreds, if not thousands, of dollars at the mechanic shop.

A gasket seals the valve cover to the head of your engine. Over time, the material in these gaskets – and the gasket cover itself – can degrade, and will eventually fail. The gasket is located between the head of the engine and the block. In order to replace it, you usually need to take the entire engine apart, which is a very expensive job.

Fortunately, there’s an easier way to fix it: simply coat the surface with a rubber sealant. Known as gasket sealers, these spray cans are incredibly effective and easy to use. In fact, spray-on rubber sealants are ideal for all sorts of problems, and can quickly fix a number of common issues in both your car and your home.

When you use a spray-on gasket sealer, the rubber will form a powerful seal that protects your car from all sorts of problems, like intense heat, cold, and other wear and tear. And, since rubber doesn’t degrade naturally in the environment, this seal will last for an incredibly long time. Here is a simple 3-step way to use gasket sealers to repair your car.


Remove the gasket, which is between the head of the engine and the block. Clean out all the oil and other gunk that may have built up over the years and dispose of it safely. Remove any rubber O-Rings that you see, as well as the ring of rubber sealant in the groove around the entire gasket cover.


Once you’ve removed these rubber pieces, you coat either coat them with liquid rubber replace them, or throw them out and spray liquid rubber onto the gasket cover itself. No matter what solution you choose, this step is incredibly easy: all you have to do is point and spray your rubber sealant around the edge of your gasket head. This creates an effective, airtight seal that will protect your vehicle for years into the future.


Place the gasket back into its spot, and then wait for the gasket sealer to dry. Congratulations! You’ve just saved yourself hundreds of dollars in car repairs.

Which gasket sealers work best?

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There are a number of different spray-on rubber sealants. However, only a few of them will work on your car. One product, called Flex Seal, is particularly well-built for that purpose. While other rubber sealants are used primarily to repair leaky roofs, Flex Seal has a unique formula that allows it to bind to a number of other surfaces – like the aluminum in your car. This is why Flex Seal is a great product to use in your vehicle.

In addition, Flex Seal dries quickly, which makes it a great gasket sealer. Once dry, it forms a powerful protective barrier for your vehicle, and will be the only solution that you need for your gasket. For all of these reasons, we highly recommend Flex Seal as the number one gasket sealer on the market.

Of course, if you still have some Flex Seal left over after sealing your gasket, you can use it for a number of other purposes as well. It makes a great roof sealant, and can even be used to fix broken potted plants, cracked masonry, and many other things. Put simply, rubber is a powerful compound, and you won’t have trouble finding uses for it around your home.

Ultimately, by using a product like Flex Seal, fixing your car’s gasket requires absolutely no expertise. In fact, anybody who is old enough to drive should easily be able to follow these steps. At its current promotional price of $19.99 for two cans, Flex Seal is an absolute bargain, particularly in comparison to the high costs of parts and labor at a mechanics shop. Order some today to see how quickly good gasket sealers can improve the lifespan of your vehicle.

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