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Qualiform’s rubber molding services provides businesses with custom molded rubber solutions to address their specific needs. Whether you need a run of injection, transfer, or compression molded components, we can work with you to develop molded rubber parts designed for both your application and budget.

Why Choose Qualiform’s Rubber Molding Services?

Qualiform Quality Assurance Program


As an ISO 9001:2015 certified company, Qualiform’s rubber molding services is committed to implementing an effective quality program that will oversee, evaluate and document every aspect of our processes so as to comply with customer requirements and assure satisfaction with every product and service we provide.

Rubber Molding Services Competitive Prices


Competitive rubber molding services pricing is the result of evaluating every aspect required to produce the part. Whether through R&D, design, engineering or manufacturing, Qualiform analyzes the entire project scope to determine the best solution at the best price.

Rubber Molding Services with Experienced Work Force


The Qualiform leadership team offers 130 years of combined knowledge and experience in all disciplines of the rubber mold industry. Our employees are valued assets, and we pledge a continued dedication to invest in the expertise of our employees so as to maintain a status of quality performance and leadership.

Qualiform creates quality custom rubber compression molding, custom transfer molding, custom rubber injection molding, and rubber to metal bonding with the highest standards in customer service.

Rubber Molding Service with Superior Customer Service


Qualiform Customer Service Support provides communication that is reliable, courteous, and responsible and includes follow-up with every customer, informing them of each step of the process, with detail-oriented, customer-conscious professionalism.

Qualiform Rubber Molding is a full-service rubber molder.

Qualiform, LLC has focused on the manufacturing of custom molded rubber products. As a privately owned, nationally recognized manufacturer offering rubber molding seervices in compression molding, transfer molding and rubber injection molding, we are committed to pursuing the best technology and resources in the industry to meet your changing needs. With more than 30+ years of industry experience and success, we offer rubber molding services and products to meet the needs of the transportation, medical, electrical, plumbing, industrial, appliance and aerospace industries, worldwide.

Qualiform Rubber Molding Services Proprietary Blend

Qualiform is proud of our proprietary rubber molding services. Our proprietary rubber compound blend has reinforcing fibers. This blend increases wear resistance, durometer, abrasion resistance, toughness and performance properties by implementing reinforcing fibers into the materials. We offer our proprietary blend for all our available rubber materials.

Rubber Molding Services Materials

  • Butyl Rubber: Lower resilience rubber
  • EPDM Rubber: Ideal for outdoor applications
  • Natural Rubber: An elastomer with incredible resilience
  • Neoprene Rubber: Resistant to oils
  • Nitrile Rubber: Exceptional chemical resistance against oils and gasoline
  • Rigid & Flexible: Useful for a wide range of applications
  • Synthetic Rubber: A versatile elastomer with lower overall cost
  • Thermoplastic Elastomers (TPE): High resistance to flame and ozone
  • Viton Rubber: Resistance to fuel at extreme temperatures

Check out our material selection here.

Types of Rubber Molding Service Processes

Rubber injection molding is an ideal process to produce precision rubber molded components and rubber-to-metal bonded products.  This process is selected for rubber parts that require high volumes, tight tolerances, over-molding, or precision applications. Rubber injection molding delivers speed and precision not found in other rubber manufacturing processes.  Furthermore, rubber injection molding is an optimal manufacturing process for products specified with rubber compounds that have quicker rubber cure times. Efficiency is gained by a higher level of automation, strict control over flash, and reduced waste from scrap parts.

Rely on Qualiform’s technical staff’s experience with rubber injection molding to help our customers determine if injection molding is the correct process for their product application and material property requirements.

Rubber Injection Molding Process Description

The process of injection molding rubber starts with bulk mixing the rubber compounds, aka stock.  The stock is then stripped into continuous strips approximately 1.25″ wide & .375″. The strips of uncured rubber stock are then fed from a hopper into the rubber molding injection equipment via a conveyance channel.

A large auger-type screw moves the stock into a barrel that holds a specific amount of rubber stock.  As it turns and moves through the channel into the injection unit, the material is heated.  As the rubber stock is heated, it plasticizes to a target temperature.  The plasticized rubber material is then injected into a heated mold cavity held under high pressure.  A runner and gate system is used similarly to the plastic injection molding process.  The temperature and pressure activate the cure of the rubber compound, vulcanizing it.  Once the rubber reaches and required level of cure, it is allowed to cool and reach a solid state within the mold. The molds open and parts are removed or ejected ready for the next cycle.

Rubber injection molding began in the mid-1960s as a spin-off from the plastic injection molding process.  The difference in this rubber molding service process is that rubber is cured under significantly more pressure per square inch of the mold’s cavity surface.

Advantages of the Rubber Injection Molding

  • A highly efficient process
  • Can be fully automated with automatic material feeding
  • Provide high precision rubber molded products
  • Superior process for consistency and repeatability
  • Allows for molding of complex geometry
  • Ideal over-molding of inserts, overmolded components and rubber to metal bonding
  • Eliminate preforms and preform labor cost
  • Flashless molding / flashless tooling / eliminating secondary trimming
  • Rapid cavity filling
  • Reduced cycle time
  • Minimal material waste

Disadvantages of Rubber Injection Molding

  • Higher start-up/shutdown costs
  • Suited for high volume applications
  • Not all elastomers are suitable

Utilizing the rubber molding service process for rubber to metal bonding is the most effective way to adhere rubber to metal parts.  Qualiform is the leader of all rubber to metal bonding companies producing the largest, most complex parts in the industry.  We offer unparalleled experience in this process and are more than happy to consult on your rubber to metal bonding application.

The Rubber to Metal Bonding Process

The rubber to metal bonding process provides a superior mechanical bond of rubber to metal parts or inserts.  Integral to the process is a two-step preparation of the metal for rubber molding.  First, the metal must be degreased, similar to metal coating or paint preparation, and cleaned of any contaminants.   Next, a special, heat-activated adhesive is uniformly sprayed onto the metal parts.

Ready for rubber overmolding, the prepared metal parts are inserted into the mold cavity.  Held in place by special magnets or chaplet pins, the mold is closed and the rubber molding process begins.  The heat required to cure the rubber, activates the adhesive forming a mechanical bonding of rubber to metal.

Rubber insert molding completely encapsulates the metal part with rubber by suspending the metal insert in the mold cavity.  Rubber can also be molded to a specific area of metal parts.   Mechanically adhering rubber to metal can enhance the stability of metal parts with the flexible characteristics of rubber.  Metal parts with molded rubber can improve part properties such as seals to NEMA standards, electrical conductivity, noise and vibration isolation, wear and impact resistance, corrosion resistance, and more.

Steel, brass, aluminum, exotics, engineered resins, and plastics can all be overmolded with rubber.

Rubber to metal bonded parts range in size from small inserts to large transportation components.  Overmolded rubber to metal parts are utilized across a broad range of applications, shapes and sizes such as bumpers, shafts, rollers, and isolators.

Rubber compression molding is ideal for low to medium-volume production of rubber products.  The rubber compression molding process can produce a diverse range of precision rubber molded components.  The compression molding process allows for the affordable production of large, intricate products. It is often used to produce environmental seal products such as rubber o-rings, seals, and gaskets.

The Rubber Compression Molding Process

The rubber compression molding process uses a preformed piece of uncured rubber that is placed in an open mold cavity.  The mold is preheated to an elevated temperature.  As the mold closes, the material is compressed and flows to fill the rubber mold cavity.  A combination of high-pressure and elevated temperatures activates the curing of the rubber compound, aka vulcanization.  The optimal level of cure is achieved, the part hardens and cools then the mold is opened and part removed.  The cycle repeats with the next rubber preform inserted into the rubber mold.

The Benefits of the Compression Molding Process

  • Economical process
  • Low-cost tooling compared to rubber injection molding
  • Maximized cavity count
  • Ideal for large parts that require a long cure time
  • Can process most elastomers and cure systems

Disadvantages of Compression Molding

  • Longer cycle times
  • Mid-range precision and consistency
  • Labor intensive

Applications of compression molding range from simple drive belts to complex large diameter diaphragms.

The transfer molding process can be used to produce both solid rubber parts and parts that require bonding rubber to a metallic or non-metallic component. Examples of parts manufactured with transfer molding include vibration isolators and shock absorbers.

The Rubber Transfer Molding Process

Similar to compression molding, transfer molding services require raw material preparation into pellets and/or pre-forms.  Rather than placing the preform in the mold cavity, the preformed material is placed in a “pot” located between the top plate and a plunger.  In the pot, the material is compressed by the heated plunger and forced (transferred) through sprues into the cavity below.  The plunger is kept in place until the preform takes on the shape of the mold and the cure is reached, vulcanized.  The part is allowed to harden, cool, then is ejected. The cull pad, any cured rubber left in the pot, is removed, mold cavities are cleaned and the next molding cycle begins.

When used for rubber to metal bonding, the transfer molding process requires the components are loaded into a heated mold either by hand or using a loading fixture.  Material is loaded into the well pot of the transfer mold.  The mold closes and the heated rubber is then transferred through the runner and gate sprues into the mold cavities.  Under pressure and elevated temperatures, the rubber cures and vulcanizes, allowing the parts can be removed.

The rubber transfer mold consists of a piston, well pot, sprue plate, cavity plate, and a base plate with a knock-out system used to eject the parts after molding.

The Benefits of the Transfer Molding Process

  • Economical process with high cavity count per mold per cycle
  • Cost-effective tooling
  • Allows for rubber to metal bonding
  • Allows for rubber overmolding
  • Tighter dimensional tolerances than compression molding
  • Ideal for large parts that require a long cure time
  • Can process most elastomers and cure systems

Disadvantages of Rubber Transfer Molding

  • Longer cycle times
  • Mid-range precision and consistency
  • Labor intensive
  • Increased flash and waste

Transfer molding is an ideal process to not only produce precision molded rubber products but also products that require rubber bonded to metal surfaces.

The Best Rubber Molding Services Quality

Our Expertise: Put Qualiform’s 30+ years of rubber insert molding experience to use by allowing us to help you choose the best polymer and molding method to meet your rubber molding project requirements.

  • Light assembly
  • Kit assembly
  • Small production runs for prototyping

Expediting: Qualiform understands emergencies happen. We have the ability to expedite production to meet your unexpected needs.

  • Packaging and labeling
  • Barcoding
  • Inventory programs

From Start To Finish

Qualiform Custom Rubber Molding creates quality rubber molding service products with the highest standards in customer service.

AMERICAN MADE PRODUCTS

Rubber Molding Services Questions?


Our technical staff is available to answer any rubber molding service questions call (330) 336-6777, or submit a question or inquiry through our Contact Form or Send Us a PDF.

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