What To Consider When Buying Gaskets

A gasket is a type of mechanical seal used to fill the space between two or more mating surfaces, usually to prevent leakage from or into the joined surfaces while under compression. Gaskets are commonly produced by cutting from sheet materials and are intended for less-than-perfect mating surfaces where they can fill irregularities. While gaskets have many uses, they are frequently found in engines, where many types of gaskets are used. For example, head gaskets are installed to fill the space between the engine block and cylinder head, and engine gaskets are used to provide a seal from harmful elements that would otherwise enter the engine.

Gaskets are also used in engines to protect the air intake and exhaust manifolds, as well as preventing oil pan leakage. Gaskets can let a controlled amount of oil through to the engine block for lubrication, however they must maintain a constant flow of coolant to prevent the engine from overheating. Some of the most common types of gaskets are high-temperature gaskets, metal gaskets, rubber gaskets, soft-cut gaskets, and sponge gaskets. Regardless of the gasket type, malfunction of a gasket can be detrimental to the engine. To help prevent malfunction, there are six considerations to factor in when purchasing gaskets: lifespan, dimensions, pressure, temperature, compatibility, and intended application.

Because gaskets are used in both parts that are regularly inspected and serviced as well as those that will remain sealed and out of reach for years, lifespan is a critical consideration. For parts that are easily accessible, gaskets with shorter lifespans are acceptable. However, for intricate parts like the engine, long-lasting gaskets are a must. The dimensions of the gasket, such as thickness, pipe size, inner and outer diameter, bolt hole diameter, and more, are also critical. The number and size of bolts the gasket will need should also be considered. Prior to purchasing, all relevant dimensions should be taken into account.

The third factor to consider is the amount of pressure that will act on the gasket. This will help determine what type of material should be used. The downward pressure will determine how much the gasket needs to be able to deform, but the amount of pressure from outside the equipment is more critical. The temperatures to which the gasket will be exposed are also an important factor to consider. Whether high or low, extreme temperatures will have a direct impact on the type and material of gasket needed. As such, temperature fluctuation, which will cause stresses through contraction and expansion, must be noted.

An often-overlooked factor is compatibility. Certain materials are incompatible with each other and will not work together. Additionally, where equipment is flushed, it should also be checked that the types of gases and liquids being flushed are compatible with the gasket materials. If they are not compatible, it will lead to premature degradation of the gasket. The final consideration to make when buying gaskets is the application. The most common gasket applications are separating liquids such as water, oil, and chemicals from each other, separating gases that are toxic or require protection from external contamination, as well as protecting sensitive equipment from leakage or electromagnetic frequency interference. Taking all of these considerations into account will help you select a reliable and durable gasket.

Whatever type of gasket you need, look no further than Industrial Part Sphere, a trusted supplier of parts for a wide range of industries. Owned and operated by ASAP Semiconductor, we are an online distributor of industrial parts as well as parts pertaining to the aerospace, civil aviation, defense, electronics, and IT hardware markets. We’re always available and ready to help you find all the parts and equipment you need, 24/7-365. For a quick and competitive quote, call us at 1-714-705-4780 or email us at sales@industrialpartsphere.com.


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April 22, 2021
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