Plastics and Rubber Products Manufacturing in Maryland

NAICS 326 · MD

The Plastics and Rubber Products Manufacturing industry in Maryland has 136 establishments, according to the Bureau of Labor Statistics. This register lists 90 facilities in Maryland. The CertainTeed Corporation Williamsport Maryland plant employed 346 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Plants in Maryland63 FACILITIES

Listing 63 of 90: the facilities with a website, a size band or two sources on record. The rest are in site search.

Facility	City	Employees	Status
Altium Packaging - Baltimore	Baltimore	20–99	◐ LIKELY ACTIVE
APAphena Pharma Solutions MD	Easton	100–499	◐ LIKELY ACTIVE
ANAppleton North	Elkton	100–499	◐ LIKELY ACTIVE
ASAppleton South	Elkton	100–499	◐ LIKELY ACTIVE
BPBel-Art Products, Pocomoke, MD	Pocomoke	100–499	◐ LIKELY ACTIVE
CCCertainTeed Corporation Williamsport Maryland	Williamsport	100–499	◐ LIKELY ACTIVE
HIHarrington Industrial Plastics LLC	Elkridge	—	▲ REPORTED CLOSED
MMMaryland Metals	Sparrows Point	20–99	◐ LIKELY ACTIVE
PPPerformance Pipe	Hagerstown	20–99	◐ LIKELY ACTIVE
RCRing Container Hagerstown	Hagerstown	20–99	◐ LIKELY ACTIVE
SPSaint-Gobain PERF PLASTCS CORP	Gaithersburg	20–99	◐ LIKELY ACTIVE
UUnipec	Rockville	1–19	◐ LIKELY ACTIVE
SVShoreline Vinyl Systems, INC.	Denton	20–99	▲ REPORTED CLOSED

Search all 90 facilities