Sterling Manufacturing

Sterling is vertically integrated injection molder specializing in high-volume manufacturing, decorating, assembly, prototyping, validation and tool design. We like to say we accelerate our customers’ success because we’re a flexible, reactive company with an incredibly talented team of engineers and program managers. This combination allows us to get products to market as efficiently as possible and seamlessly transition to high-output manufacturing.

Company Profile


Address: 640 Sterling Street
Lancaster, Massachusetts 01523

Full Time Employees: 50

Year Founded: 1968

President: Stan Bowker


Medical: Endoscopy instruments, sleep apnea masks, implantable ligament reattachment anchors, wound closure devices, etc.

Life science: Consumables and lab ware, including microplate and cartridge assemblies for cellular metabolism analysis

Aviation/Aerospace: Iconic David Clark headsets worn by pilots, often featured in major motion pictures


Our partners include leading OEMs in the healthcare/biotech, defense, aviation and consumer product industries. With a newly expanded state-of-the-art cleanroom, about 50% of the products we manufacture are used in the healthcare/biotech arena, but we’re growing across all market segments. We work with Fortune 100 innovators, cutting-edge medical device startups and international corporations.

Careers/Job Opportunities

We’ve grown significantly over the last seven years due to an exceptionally talented team of engineers, program managers, process technicians, operators and sales staff.

Sterling is currently looking to fill the following positions:

• Quality Engineer

People are by far our biggest asset, and we continue to add new positions as we grow and evolve. Please visit our website,, to view current openings and submit a résumé.

Internship/Apprenticeship Program

Sterling offers a limited internship program, and we review opportunities on a case-by-case basis. We encourage interested applicants to reach out to us.

Company Benefits

Employees are encouraged to pursue formal training programs and take applicable courses at local colleges and universities. Sterling has a tuition reimbursement program for approved courses. Sterling also offers a generous benefits program, 401k match and famed company outings.

Community Engagement

Sterling is an extremely proud partner of the Ashburnham-Westminster Regional School District’s ACE transition program.

Sterling is an active supporter of local junior-high school and high school robotics clubs and programs and supports local charities and sports teams.

Environmental Awareness

We invest in state-of-the-art Engel injection molding machines with high-efficiency, low-emission Eco-Drive technology. This results in a significant decrease in energy consumption and drastically lowers our carbon footprint.

In 2018, we installed a cutting-edge variable frequency drive screw compressor that uses plant process water for cooling. Not only does this lower energy consumption, but since plant process water is used for heating in the winter months, the residual heat from the compressor will also heat our facility in the winter.

We recently upgraded our lighting system to a high-efficiency LED system both inside and outside the facility that drastically reduces energy consumption.


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