Molding is an excellent option for mass production of gaskets with exact dimensions and little need for finishing. To create rubber gaskets in this fashion, liquid rubber is injected into a mold at high pressure and allowed to cool into the desired shape. This form of production ensures higher precision and allows for more cost-effective mass production.
Gaskets that are created through extrusion are forced through a die to create the desired shape. The rubber used in this process must be soft enough to be easily shaped, so finishing processes such as vulcanizing and curing are performed after the gaskets are cut. Extrusion is more cost-effective than other gasket manufacturing processes, as it is easily automated and the base material can be continuously pushed through the extruder.
Die cut gaskets are similar to extruded gaskets in that the shape of the gasket is cut from the base rubber material, but the gaskets are cut from a flat sheet of rubber using a die to produce the desired shape. This process is easily automated and reduces waste, as a die cutter can be used to create a number of different shapes at the same time from the same sheet of material.
Waterjet production of gaskets uses water ejected at extremely high pressure to cut the rubber. Like die cutting, waterjet manufacturing cuts the shapes out of a large flat sheet of rubber. The process can be used to cut harder materials with very precise details and is capable of cutting multiple shapes at the same time, thereby reducing material waste.
High-temperature gaskets are specialized gaskets that are engineered to withstand extreme temperatures (up to and exceeding 2300° F) without suffering from thermal damage or degradation. As such, they are ideal for use in critical sealing applications involving high-temperature process fluids or environmental conditions.