John Evans’ Sons, Inc.

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Lansdale, PA  |  215-368-7700

John Evans’ Sons is the international leader in the design and manufacturing of constant force springs, constant force spring assemblies and variable force pusher springs. Custom design, in-house tooling and precision manufacturing, combined with a wide & varied stock spring selection allows us to serve a wide variety of high tech applications from military to medical and from the depths of the seas to aerospace.

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