Molded Rubber Products

                                   Now at American Seal & Packing, we can offer custom made shapes, from o-rings to golf grips and well head components utilizing Compression Molding, Transfer Molding or Injection Molding. Each method has it's own advantage.

Compression Molding is the ideal method for medium-sized and large items produced in small to medium batches. It is also the best method for expensive rubber types such as Viton® and Aflas®, FFKM, and applications which require extreme rubber hardness.

Many rubber articles are produced by molding, a process in which uncured rubber, sometimes with an insert of textile, plastic, or metal, is cured under pressure in a mold. There are three general molding techniques: compression, transfer, and injection molding.
Many rubber articles are produced by molding, a process in which uncured rubber, sometimes with an insert of textile, plastic, or metal, is cured under pressure in a mold. There are three general molding techniques: compression, transfer, and injection molding.
In compression molding, a pre-weighed, generally preformed piece is placed in the mold; the mold is closed, with the sample under pressure, as it vulcanizes. Cavity pressure is maintained by slightly overfilling the mold and holding it closed in a hydraulic press. Heat is provided by electricity, hot fluid, or steam.
Transfer molding is a form of injection molding. The compound to be cured is held in a heated reservoir, the amount of rubber to fill the mold is forced through sprues or a runner system and into the mold cavities by a piston. Pressure is maintained by the piston and a mold closure system. The mold has to be hot enough to ensure curing of the rubber, but the reservoir has to be at a lower temperature.

Molding of Rubber:

Custom Molded Rubber Customer Rating 4.8 / 5 - based on 5 Votes
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• Low mold production costs
• Short tooling times
• Helps in the processing of rubber types which are difficult to work with
• Excellent for products with high density and therefore long process times

Custom Rubber Molding Materials

American Seal and Packing has a wide selection of rubber compounds available to satisfy your rubber molding needs. The most common Custom Rubber Molding parts we use include: