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Custom Springs & Wire Forms for Molded Parts and Rubber Seals

Turn to Master Spring for custom-built springs and wire forms for molded parts.

Find Custom Springs, Rings and Wire Forms…

…for rubbers seals, custom formed parts & more

We manufacture many springs, rings and wire forms that go inside rubber or plastic molds. These parts are used by OEMs in many industries, like tire 1 and tier 2 automotive suppliers, outdoor power equipment, and seals.

For some of these customers that order millions of pieces per year, we keep 1 to 3 months of inventory of their annual usage. They release what they need weekly or every other week. We are required to maintain a high monthly score for quality and on-time delivery.

Contact us today to learn more about our custom solutions for molded parts and seals, or see an example of our successful custom compression spring service with a molded rubber car part.


Custom Springs & Wire Forms for Molded Parts and Rubber Seals


Made-to-Order Springs, Rings and Wire Forms Solutions


We proudly manufacture custom springs and wire forms for:

Molded Seal Products
Rubber Molded Components
Rubber Injection Molding Parts
Molded Automotive Parts
Molded Split Seal Products
Plastic Injection Molding Components
And More!


Find Custom Springs and Wire Forms

At Master Spring, we try to find ways to improve the process of making each OEM’s parts as we manufacture them year after year. Our rubber molding spring products are precisely engineered, and are approved by our clients’ engineers to ensure adherence to strict guidelines.

We manufacture the following types of components for molded parts and rubber seals:

  • Custom Wire Forms: including any shape formed from round wire with a diameter from .010” to .500”.
  • Compression Springs: including straight cylindrical, conical, barrel and hourglass shaped as well as ground and not ground ends.
  • Extension Springs: including all types of ends, loops, or hooks such as side-loops, center loops, German hooks, and extended hooks.
  • Torsion Springs: including single body torsion and double torsion custom springs with varying leg configurations.

Molded Component Resources

Molding Injection Uses

A Compression Spring Success Story

Manufacturing Springs for the Automotive Industry

Learn how Master Spring was able manufacture a compression spring with exacting tolerances to support the thin walls of an automotive hose -- without the spring protruding the hose. The result: we are able to produce approximately 6,000,000 of these springs per year to spec.



  • Upload CAD and or PDF Files: Tips

    **CAD, STEP, and IGS files can no longer be uploaded and must be emailed to info@masterspring.com.

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© Master Spring and Wire Form Co.

1340 Ardmore Ave., Itasca, IL 60143

Phone: 708.453.2570 | Fax: 708-453-6420