Rubber Molding

UTEX industries has created over 600 formulations of rubber compounds that we use for our customers. They range from a Nitrile (NBR) all the way to a Perfluoroelastomer (FFKM). We have chemists and a dedicated lab on site that test each batch as it is made. We are able to test various characteristics of each rubber such as tensile, elongation, tear strength, compression set, specific gravity, peel strength, and much more. Along with maintaining the quality of our rubber and development of new rubber, our lab also helps to provide low quantity production or small-scale molded parts. We compound an average of 600,000 lbs of rubber a year.

Some applications require high-precision solutions. When existing production parts aren’t up to the job, Utex can design custom molded rubber products that exactly match your needs. With the ability to design and fabricate highly engineered molds to fit almost any application, our engineering team can transform an abstract request into a finished product tailored to your specifications.

For the past 80 years, we’ve been collaborating closely with our customers to interpret their ideas into a broad range of cost-effective rubber molding solutions—from simple I.D./O.D. rings to complex geometric profiles. Our custom rubber molding process has produced more than 5,000 unique parts that are now used in industries such as oilfield, petrochemical, medical, pulp, and paper facilities.

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Compression Molding

One of our most common methods of molding rubber, Compression Molding requires some early steps of making preforms. A preform is placed into the mold and then compressed in the mold under specific temperature and pressure for the size and material of the finished part. Flashing, excess material, may occur and needs to be trimmed at a later stage.
Injection Molding

During Injection Molding, heated rubber travels through an auger, where it is softened and then forced through a nozzle into the mold cavity. While in the cavity it will take its shape as it cools before being removed. This is the most efficient process of the four methods because it allows for quick production of high quantity parts.
Transfer Molding

Transfer Molding is similar to compression molding yet the mold is more complex, requiring a transfer pot that has a small passage to the actual mold cavity. Rubber is placed in the transfer pot and heated prior to being forced into the mold cavity to form the molded part.
Extruded Rubber

When extruding rubber, strips of rubber are fed through one side of a barrel where they will be rotated through along the screw all while heating up along the length of the barrel. The opposite side there will be a metal die that the rubber is forced through and will take the shape (or profile) of the die. After the rubber comes through the die, we run it through a chilled water bath to help maintain the profile.
5 Steps For Custom Rubber Molding:
CONCEPT.

Utex has partnered with hundreds of customers over our 80-year history to conceptualize and model new and existing technology. Combining the knowledge of our engineering, materials, and manufacturing teams, Utex can create a solution for whatever problem you are facing.
FORMULATE.

Utex has over 600 proprietary compounds to choose from for your application. Our in house formulating, mixing, and molding capabilities reduce the number of companies required for your project, and guarantee that your material is properly managed.
PROTOTYPE.

Want to prove your concept before producing on a mass scale? No problem! Utex offers a rapid prototype division to quickly and efficiently produce prototype parts for testing and evaluation.
CONSTRUCT.

Utex offers all manners of part construction, including: • Cast molded and foamed urethane • Compression, injection and transfer molding • Machining of rubber, thermoplastics, and metal • Bonding rubber and/or thermoplastics to metal or other substrates • Spring installation and fabrication
PRODUCE.

No matter what volume you need, Utex has an efficient method to produce the quantity you need. Through our in-house mold design and machining teams, we can ensure your product is made of the highest quality to meet you and your customer’s demand.
Rubber Molded Products
Seal/ Dust Boot
RCD Element
D-Seal
Annular Element
Pulsation Dampener
Diaphragm
Flowline Seal