What Material Is Used To Make Gaskets?

Rohan Mathew






A gasket is a type of rubber sandwiched between two metal surfaces to form a seal against the intrusion of liquid or gas. They are used in machines to provide a seal. Gaskets typically have a “shoulder” that forms an end-protector for one material and plies for the other material. Gorilla Gasket — custom gasket manufacturer is well-equipped to handle your gasket needs using a wide range of customizable gasket materials.

The Most Common Types of Gasket Materials


The metals are made of copper, brass, stainless steel, and aluminum. Metal gaskets include coil springs, oil seals, valve cores, and various fasteners. Metal parts with a flat surface or cylinder seals with an internal shoulder are usually made using compression gaskets. The metal parts to be joined are placed on top of a compressed underlayment, providing a seal between the two materials. These gaskets are used on air cylinders, aircraft components, steering and suspension components, and some heat exchangers and refrigeration coils.

Pros of Metal Gaskets

Gaskets made from metal can withstand temperatures up to 1500 degrees Fahrenheit. They are also easy to clean and can withstand high temperatures.


Rubber gaskets are used in areas such as plumbing, power transmission, and air conditioning. Some rubber gaskets include O-rings, RTV (methacrylate rubber), hard molded ones, resilient O-rings, and slidable sleeves. Large pieces of O-rings are usually round and flat. However, smaller sizes can be made in various shapes, including square, rectangular, and horseshoe plies. Rubber gaskets are often used with metal surfaces to seal against gases or liquids.

Pros of Rubber Gaskets

Rubber gaskets are more flexible than metal gaskets. Rubber gaskets can be used in relatively cold areas and are resistant to oil and chemicals such as gasoline, paint, vegetable oil, and hydraulic fluid. They are also resistant to high temperatures and chemicals and are used to manufacture fluid couplings, O-rings, and bearing spacer rings.


Cork gaskets are highly flexible and commonly used in the wine and beverage industry. They are used to seal bottles, corks, caps, and various containers. They are also used in different electronic devices such as televisions and computer monitors. The cork is made to fit snugly between two metal surfaces, so they form a seal against any liquid or gas intrusion.

Pros of Cork Gaskets 

Cork gaskets can be used to seal against chemicals, and they are moisture resistant. Cork is an excellent insulator, and it is non-conductive. The corks are made in different shapes that are molded together by high pressure. They are mold and mildew-resistant. Some types of cork gasket sizes include quarter round, strip cork, and half-round.


Fiber gaskets are made from woven material, metal yarn, and synthetic material. They are used to form a seal between two surfaces to prevent the intrusion of gas or liquid. Fiber gaskets are often used in the plumbing, automotive, heating, and air conditioning industries. They are also used in various electronic devices such as telephones and computers. The fiber material can be made into various shapes, including flat, round, rectangular, and horseshoe plies.

Pros of Fiber Gaskets

Fiber gaskets are flexible and are resistant to heat, chemicals, and acids. The fiber materials can also be cleaned using water.

Problems With Fiber Gaskets

Fiber gaskets require special treatment when they are installed or repaired. They must be held in place during the curing process so the joint is not damaged. If this is not done correctly, there is often a need for premature repair or replacement to prevent leaks and premature failure of the repair.


Plastic gaskets are typically made from high-density polyethylene (HDPE), butyl rubber, nitrile rubber, and styrene-acrylonitrile adhesive. These gaskets are used to form a seal between two machined surfaces to prevent the intrusion of gas or fluid. Plastic parts with a flat surface or cylinder seals with an internal shoulder are usually made using compression gaskets. Plastic parts can be cast into or molded into any shape. The molded plastic parts can also be made from different materials, including butyl rubber, NBR (nitrile rubber), and HDPE (high-density polyethylene).

Pros of Plastic Gaskets

Plastic gaskets can withstand a wide range of temperatures. They are also resistant to many chemicals in addition to acids and alkalis.

Cons of Plastic Gaskets

Plastic gaskets should not be used in high-pressure areas or potential for steam or high-temperature water flow. They are also not recommended for areas with rapid temperature changes because they will crack and fail prematurely.

Looking for Custom Gaskets?

When you come across gaskets, it is essential to know what materials they are made of and their pros and cons. If you need custom gaskets, reach out to the experts at Gorilla Gasket. We can help you find suitable material for your project.