Custom Rubber Molding Services Built for Performance

Rubber molding services are essential for components that must perform reliably under pressure—whether sealing against fluids, absorbing vibration, or withstanding extreme environments. When materials or tolerances fall short, performance and production can suffer.

Qualiform is a U.S.-based custom rubber molding manufacturer delivering precision-molded rubber products tailored to your specifications. We produce custom molded rubber parts using compression, transfer, and rubber injection molding services, along with rubber-to-metal bonding for complex assemblies.

Our team works closely with you to optimize material selection, tooling, and process design—ensuring consistent quality, competitive pricing, and reliable lead times.

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Rubber Molding Capabilities Overview

 

Process Best For Typical Custom Rubber Parts Compatible Materials
Rubber Injection Molding Services High-volume production, tight tolerances, complex geometries Seals, grommets, intricate molded rubber components EPDM, Nitrile (NBR), Silicone, TPE
Compression Molding Large, thick, durable parts with simpler geometries Bumpers, pads, industrial components, vibration mounts Natural Rubber, Neoprene, EPDM
Transfer Molding Parts requiring inserts or bonding, improved material flow Rubber-to-metal bonded parts, encapsulated components Nitrile, EPDM, Viton®, specialty compounds
Rubber-to-Metal Bonding Structural strength, vibration isolation, multi-material assemblies Engine mounts, isolators, bonded bushings Nitrile, Neoprene, EPDM, FKM/Viton®
Rubber Compound Development Custom material performance, high wear resistance, enhanced durability, specialized applications High-wear components, abrasion-resistant parts, chemically resistant products EPDM, Nitrile, Silicone, fiber-reinforced compounds (Veramix)

Precision Custom Rubber Manufacturing for Every Application

A selection of Qualiform's TPE parts | Thermoplastic elastomers | tooling transfers
edpm transfer molding seal
rubber vibration mounts
colored edpm injection molded grommets

Choose the Custom Rubber Molding Experts

Contact a member of our technical staff at (330) 336-6777 or send us a drawing.

Qualiform molds both natural rubber and synthetic rubber, which include:

The Rubber Molding Process

Rubber molding is a manufacturing process that involves heating, forming, and curing rubber compounds within a mold under controlled pressure and temperature. The mold cavity defines the final shape of the part, allowing for precise replication of complex geometries.

Depending on the material and application requirements, custom molded rubber parts can include intricate features such as undercuts, compound curves, and tight tolerances. Selecting the right molding process ensures optimal performance, durability, and cost-efficiency for each application.

Rubber Molding Processes We Offer:

Products We Manufacture

  • Abrasion Resistant Parts
  • Colored Rubber Products
  • Complex Rubber Products
  • Custom Rubber Parts
  • Rubber Bumpers
  • Rubber Gaskets
  • Rubber Grips
  • Rubber Grommets
  • Rubber Seals
  • Rubber Extrusions
  • Rubber-to-Metal Bonded Products
  • Vibration Control Parts / Vibration Isolation Parts

Qualiform Custom Rubber Molding

  • Qualiform Custom Rubber Molding
  • Rubber Molded Parts Manufacturers
  • Rubber Component Manufacturers
  • Rubber Molded Products Manufacturers
  • Industrial Rubber Molding
  • Black Rubber Molding
  • Molding Rubber Parts
  • Quick Turn Molded Rubber Parts
  • Large Molded Rubber Parts
  • Vulcanized Rubber Products
  • Solid Rubber Cylinder
  • Rubber Cylinders
  • Rubber Thread
  • Flexible Rubber Rod
  • Rubber Sleeves
  • Rubber Profile
  • Molded Rubber Shapes
  • Molded Rubber Grip
  • Molded Rubber Base
  • Molded Rubber Covers
  • Molded Rubber Bumpers
  • Molded Rubber Bumper
  • Molded Rubber Boots for Cylinder
  • Molded Rubber Grommets
  • Molded Rubber Gaskets
  • Molded Gasket Shapes
  • Molded Rubber Shore A40
  • Rubber to Metal Bonding Manufacturers
  • Rubber to Metal Molding
  • Custom Rubber Metal Bonding
  • Molded Rubber to Metal Bonding
  • A Better Process than Induction Bonding of Rubber To Metal
  • Rubber Coated Products
  • Rubber Coated Rollers
  • Rubber to Metal Vibration Mounts

  • Custom Rubber Gaskets
  • Custom Buna Gaskets
  • Rubber Gasket Manufacturer
  • Rubber Gaskets and Seals
  • Custom Gasket
  • Custom Gaskets
  • Custom Gaskets 5/8 Thickness
  • Custom Gasket Maker
  • Custom Gasket Maker Near Me
  • Custom Gasket Manufacturing
  • Custom Gasket Manufacturer
  • Custom Gasket Small Orders
  • Watertight Gasket Manufacturers
  • EPDM Gasket
  • EPDM Gasket Manufacturer
  • Custom EPDM Gaskets
  • Custom EPDM Gasket Molding
  • EPDM Rubber Products
  • EPDM Rubber Parts
  • Custom Neoprene Gaskets
  • Neoprene Molding
  • Neoprene Molder
  • Custom Rubber Seals
  • Custom Seals and Gaskets
  • Custom Viton Gasket
  • FKM Gaskets
  • FKM Seals
  • Viton Seals
  • Viton Gaskets
  • Precision Rubber Products
  • Rubber Pulley Wheels
  • Rubber Plugs Manufacturer
  • Rubber Wheels / Custom Rubber Wheels
  • Rubber Disc Manufacturer
  • Rubber Handle Manufacturer
  • Rubber Hinges
  • Rubber Stop Manufacturer
  • Rubber Mounts
  • Anti Vibration Mounts Manufacturers
  • Rubber Bollards
  • Custom Rubber Metal Carrier Gaskets
  • Custom Rubber Gasket U Profile
  • U Shaped Rubber Grommet
  • L Shaped Rubber
  • V Shape Rubber Gaskets
  • Custom PTFE Gasket

  • Rubber Grommet Manufacturer
  • Grommet Manufacturers USA
  • Rubber Grommet Shapes
  • Custom Rubber Grommets
  • Custom Made Rubber Grommets
  • Rubber Feed Rollers
  • Rubber Rollers
  • Custom Rubber Rollers
  • Rubber Feet
  • Rubber Blocks
  • Flexible Rubber Cone
  • Aircraft Rubber Parts
  • Medical Rubber Products
  • Automotive Rubber Boots
  • Steel Rubber Parts
  • Rubber Coated Magnets
  • Expansion Bellows Rubber
  • Rubber Components
  • Small Rubber Products Manufacturers
  • High Density Custom Rubber Products
  • Custom Rubber Pads
  • Molded Rubber Dock Bumpers
  • Custom Rubber Bumpers

Custom Rubber Molding FAQ’s

From the initial design phase to the final approval of your part, Qualiform can be by your side to assist you.

Average lead-times are as follows:

  • Prototype Tools: 2-4 weeks
  • Compression or Transfer Tooling: 6-8 weeks
  • Rubber Injection Molding Tooling: 8-10 weeks

However, we understand some situations require improved tooling lead-time. In these situations, we work with our tooling shop to meet customer requirements.

All of our tooling is purchased in the United States, allowing for faster responses to customer changes and faster lead-times.

Most parts can be shipped within 3-4 weeks from receipt of order, depending on your order quantity.

Tooling will fit into our presses in most cases; however, there are some situations where minor tooling modification is required.

Qualiform Rubber Molding works with rubber suppliers to provide color matches. We can match any customer-requested color.

Competitive Pricing

We are able to maintain competitive pricing through the evaluation of every aspect of part production. Qualiform evaluates the entire scope of each project to discern the best solutions and prices whether through R&D, design, engineering, or manufacturing.

Experienced Work Force

Our leadership team combines 130 years of experience in all areas of the rubber molding industry to offer the best service possible. Here at Qualiform, we consider each employee a valued asset; thus, we maintain dedication to investing in the skill sets and expertise of our employees, reinforcing high-quality products, performance, and leadership.

Customer Service

Our Customer Servicer Support provides Qualiform customers with courteous and reliable communication. We also include detail-oriented follow-ups with each customer, ensuring they are aware of the inner workings of each step of the process.

The rubber injection molding process is the best way 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 the processes is that rubber is cured under significantly more pressure per square inch of molds 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

The rubber to metal bonding process 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, chemical and 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 metal parts are utilized across a broad range of applications, shapes and sizes such as bumpers, shafts, rollers and isolaters.

The rubber compression molding process 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 requires 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/vulcanizes and parts are 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.

Qualiform is a leader among U.S. rubber molding companies. We are a top molder of custom products requiring special compounds or unique designs. Furthermore, we have immense experience in all aspects of rubber molding and rubber-to-metal bonding; thus, we offer incomparable ability in problem-solving, allowing us to work with products that present specific molding challenges.

Qualiform is certified to ISO 9001:2015. We work to produce the highest quality in custom rubber-molded products while providing each customer with the necessary attention to ensure their needs are met. If you are in need of assistance with product development, do not hesitate to contact Qualiform Rubber Molding. We are experts in a variety of molding services including, injection molding, compression molding, transfer molding, and rubber-to-metal bonding.

Throughout the entire design and development process, our expert staff will be by your side to assist you. With over thirty years of experience, we can ensure each product meets your needs and specifications. Our staff will work with you at each step of your product’s development, ensuring the materials and product quality are to your liking.

Qualiform Rubber Molding is dedicated to employing the most effective quality assurance program. This program oversees, evaluates, and documents every aspect of our molding processes so we can continue to comply with customer requirements and ensure satisfaction with each product and service we offer.

As a trusted name among custom rubber molding companies, Qualiform delivers high-quality, precision-molded rubber parts tailored to your specifications. Since 1976, we’ve helped businesses meet demanding applications with consistent results and top-tier customer service.

We specialize in:

  • Rubber compression molding
  • Rubber transfer molding
  • Rubber injection molding
  • Rubber to metal bonding

Our team works closely with you from design through final inspection, ensuring your product performs as intended—every time.

Why Choose Qualiform For Custom Rubber Molding?

Unlike many custom rubber manufacturers, we’re equipped to handle complex jobs and custom formulations. Whether it’s small runs or large-scale production, we offer flexible solutions, fast turnaround, and unmatched expertise.

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

Custom rubber molding services