US Factory Map

Plastic injection molding companies in Connecticut

Connecticut has 22 plastic injection molders in EPA records, facilities that list codes for plastic parts and products made by molding, including injection-molded components. The most are in Watertown and Danbury. That is under 1% of the 3,730 such facilities nationwide, and Connecticut ranks #36 of 49 states.

Product
Plastic injection molding companies
Facilities
22
State rank
#36
NAICS
326121, 326122, 326199
Revised
November 1, 2026

Facilities in Connecticut

These are active facilities in EPA's ECHO database that list a code for plastic parts and products made by molding, including injection-molded components.

FacilityCityWhat EPA lists
The Gilman Brothers CompanyBozrah (Gilman)All Other Plastics Product Manufacturing
Saint-Gobain Ppl CorpNew HavenAll Other Plastics Product Manufacturing
3M Purification IncMeridenAll Other Plastics Product Manufacturing
Putnam Plastics CorporationDayvilleAll Other Plastics Product Manufacturing
Advanced Specialties, LLCWatertownAll Other Plastics Product Manufacturing
Conarc IncTerryvilleUnlaminated Plastics Profile Shape Manufacturing
Cumberland FarmsMilfordAll Other Plastics Product Manufacturing
Deep River PlasticsDeep RiverAll Other Plastics Product Manufacturing
Deringer-NeyBloomfieldAll Other Plastics Product Manufacturing
Ensign-Bickford /film Fiber DivSimsburyAll Other Plastics Product Manufacturing
Flagship Converters, IncDanburyAll Other Plastics Product Manufacturing
Futuramik IndustriesHartfordAll Other Plastics Product Manufacturing
Idex Health & Science LLCBristolAll Other Plastics Product Manufacturing
Inline Plastics CorpSheltonAll Other Plastics Product Manufacturing
Intrex CorpDanburyAll Other Plastics Product Manufacturing
Oxford Performance MaterialsEnfieldAll Other Plastics Product Manufacturing
Park Advanced Composite MaterialsWaterburyAll Other Plastics Product Manufacturing
Polyflon CompanyNorwalkUnlaminated Plastics Profile Shape Manufacturing
Rexam Dispensing SystemsThomastonAll Other Plastics Product Manufacturing
Rogers CorpWoodstockAll Other Plastics Product Manufacturing
Silgan Dispensing Systems (Park Rd.)WatertownAll Other Plastics Product Manufacturing
Web IndustriesKillingly (Dayville)All Other Plastics Product Manufacturing

Industry codes are reported by facilities to EPA programs and are not checked here. A few listings may be repair shops, distributors or recyclers. How these records work.

Where they are

  • Watertown: 2
  • Danbury: 2
  • Bozrah (Gilman): 1
  • New Haven: 1
  • Meriden: 1
  • Dayville: 1

By product code

  • All Other Plastics Product Manufacturing (NAICS 326199): 20
  • Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121): 2

All plastics and rubber manufacturing in Connecticut: 54 facilities and Census job counts.