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SRIM was formed in 2015 in a 2,000 square- foot building with the premise of adding manufacturing to Harrison Township, along with creating jobs.  SRIM quickly outgrew the building and moved to it’s current 10,000 square-foot building in January of 2018.  Stay tuned for further growth plans….


As a leading supplier of custom plastic injection molded products in Michigan, SR Injection Molding (SRIM), can help your company with all of your engineering needs. We mold engineered plastic components including thermal injection molding of class A parts and insert molding. Our press sizes range from 55 ton to 500 ton in a clean, climate controlled shop running three shifts each day. We're here to manage the plastic part manufacturing projects from concept to completion, including:


  • Concept and development

  • Part and mold design

  • Mold flow analysis

  • Rapid prototyping

  • Material selection, sourcing & testing

  • Tool quality

  • Process setup

  • Product testing

  • Finite Element Analysis (FEA)


SRIM's experienced in-house team ensures quality parts and products, while optimizing your concept for plastic injection molding. We can execute your project whether it's born from a rough sketch or detailed drawing. SRIM's innovative design solutions will incorporate your component's specific usage requirements, regulatory requirements, and production restraints.


owned and operated


9001:2015 certified


made in the USA

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