Founded in 1974 as Sailing Specialties Inc., SSI Custom Plastics has grown from a four-employee sailboat maker into a 100-person Maryland manufacturer known for custom thermoforming. Its in-house team helps manufacturers turn early concepts into finished plastic components, with experience spanning marine work and demanding medical applications. During the COVID-19 response, SSI produced more than 1.86 million face shields for Maryland and healthcare workers nationwide.
ISO 10993 standard materials
certification
Mercury Plastics Inc. – MdFounded as Maryland Thermoform, Candle Packaging USA, and Quake Scientific in 1984, Mercury Plastics Maryland manufactures custom thermoformed and fabricated plastic parts in Baltimore. Acquired by Mercury Plastics Inc. in 2020, the Maryland operation combines more than 30 years of local experience with vertically integrated, wholly American-made production, taking projects from prototype through manufacturing and shipping. Its work includes specialized applications for government and military customers as well as high-volume consumer packaging, under ISO 9001 Design certification.MIDDLEFIELD, OH
Mid-Atlantic PlasticsFounded in 2005, Mid-Atlantic Plastics is a Baltimore-area fabrication shop built around practical expertise and long-term customer relationships. Its professionals create custom plastic work and large-run projects for customers in fields such as health care, military, and food processing, with the capacity to handle everything from prototypes to production runs.ROSEDALE, MD
Maryland Plastics, LLCFor more than 85 years, Maryland Plastics has made thermoplastic products through multi-injection molding at its Federalsburg manufacturing facility on Maryland’s Eastern Shore. The 244,000-square-foot operation employs 100 people and produces durable serving ware and party pieces while also taking on custom molding projects, from medical parts to complex multi-phase designs. Its sustainability program includes local purchasing, conservation efforts, environmentally friendly products, and comprehensive waste management.FEDERALSBURG, MD
Formed Plastics, IncFounded in 1946, family-owned Formed Plastics makes custom plastic components through rotational molding, thermoforming, and fabrication at its 85,000-square-foot Long Island facility. The third-generation company is also known for developing nearly unbreakable plastic streetlight globes in the 1960s, now used by municipalities across the country. Its quality system is certified to ISO 9001:2015 and AS9100D.CARLE PLACE, NY