About Sterling

Sterling is a vertically integrated injection molding solutions partner in the consumer product, healthcare and defense industries. Sterling supports the entire product lifecycle, with rapid prototyping, tool development, validation, production molding and automated secondary operations.

Our History

Founded in 1968, Sterling supported OEMs in the healthcare, aviation and industrial fields and established a brand synonymous with excellent customer service. Sterling was acquired in 2011 by an experienced management team that had previously operated a highly successful consumer and medical product molding company before selling it in 2008. Since 2011, Sterling’s focus has been on consumer products and the healthcare and defense industries.


Sterling added LSR molding and tooling capability with the acquisition in 2019 of Albright Silicone division in Leominster, MA.


Sterling offers precision injection molding, 3D printing, dedicated engineering, tool development, and a full range of value-added services. Sterling’s numerous secondary operation capabilities provide OEMs and consumers with products that not only function to specification but are also attractive and tastefully branded. For companies looking to improve supply chain efficiency or consolidate vendors, Sterling’s value-add operations make us a “one-stop shop.”

We rely on process improvement, new technology implementation and logistics cost reduction to eliminate supply chain inefficiencies. We understand what it takes to increase speed-to-market, improve your margins and deliver superior quality products on time, and our customers enjoy a flexibility and adaptability that is unique to Sterling. We can develop a manufacturing program that works for you.

Our Facility

Sterling is equipped with 27 injection molding machines, including 14 added since 2015. Production molding machines are 2 years old on average. Our facility is a completely controlled environment, with a recently expanded ISO Class 8 cleanroom. We have a wide range of press tonnage—28-550 ton with plans to expand—and are committed to continuous reinvestment in operations, with $2 million recently invested in upgrading our cleanroom and purchasing new machines.

Our Quality System

  • ISO 9001:2015 registered
  • Total cost of non-quality of less than 1% and improving
  • IQMS™ ERP system
  • SPC monitoring
  • 8D problem-solving methodology
  • ISO Class 8 certified cleanroom
  • Cutting-edge metrology technology with fully programmable touch probe CMM vision systems
  • ISO 13485:2016 registered Albright Silicone division location