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CDM Inc. is closed in observance of Memorial Day. We will resume normal business hours on Tuesday, May 26th.

All Cable Sizes and Connector Types Accommodated

Cast Molded Parts Capabilities

In-house Mold Machining

Large Material Capacity

Overmolding

Overmolding is a manufacturing process that involves molding a second material over an existing part. This technique is commonly used to combine different materials, such as plastic and rubber, to create a single, cohesive product. Overmolding can reduce the need for secondary assembly processes by integrating components into a single part and by decreasing material waste. Overmolded products are more resistant to wear and tear, moisture, and temperature fluctuations.

Different Types of Overmolding

  • 2-Part Casted Overmolding provides a solid,seamless seal that chemically bonds to backshells and cables to protect against liquids, dust, heat and impact.

    Pros:
    Suitable for lower volumes or prototyping
    Multi-material production
     
    Cons: 
    Time consuming in manufacturing
    Not efficient for high volume production
     

    Examples of materials used are polypropylene, polyethylene, TPE’s and TPU’s, MIL-M-24041-spec polyurethanes along with low smoke/zero-Halogen options.

  • Injection Overmolding provides a solid, seamless seal that protects against liquids, dust, heat and impact. Injection Overmolding chemically bonds to cables, thermoplastics, backshells and other metals and offers superior aesthetics to 2-Part Casted Overmolding.

    Pros: 
    Applicable for complex or critical-use end products
    High volume efficiency
    Can provide a variety of surface finishes
     
    Cons: 
    Possible mold costs
     

    Examples of materials used are Technomelt®-PA-678, ESTANE®58244, ESTANE®58277 and Santoprene™.

  • The Full Rubber Overmolding  process is a vital part of CDM’s suite of value-added capabilities and has special advantages over conventional overmolding.

    Pros: 
    Seamless end product
    Enhanced flexibility and chemical resistance
    Accelerated manufacturing time
     
    Cons:
    Possible mold costs
    Higher materials cost
     

    Examples of materials used are EDPM, Fluorocarbon Elastomer (Viton®) and Neoprene.

In-House Support Operations

Overmolding

CDM’s 3,000 square-foot Turnersville, NJ, machine shop supports the overmolding program by providing molds and specialty components to make the entire process seamless to customers.

Overmolding vs Shrink Boots: What’s The Difference?

  • Overmolding

    • Provides a complete, seamless seal at the cable/connector junction
    • Provides an effective strain relief
    • Unlimited size, shape and color availability
    • Overmold material used is specific to the application
    • American made in-house at Turnersville, NJ under 100% quality control
    • Possible mold or prototype costs

  • Shrink Boots

    • Moisture and dust resistant, but not a true seal between the cable and connector
    • Shouldn't be used as a strain relief
    • Off-the-shelf sizes and shapes only, no color options
    • Very limited choice of materials
    • Mass produced and imported
    • Budget-friendly
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