2022 NAICS industry in sector 31-33 Manufacturing
32521 Resin and Synthetic Rubber Manufacturing
NAICS 32521 is the US industry code for resin and synthetic rubber manufacturing. It covers establishments primarily engaged in one or more of the following: (1) manufacturing synthetic resins, plastics materials, and nonvulcanizable elastomers and mixing and blending resins on a custom basis; (2) manufacturing noncustomized synthetic resins; and (3) manufacturing synthetic rubber.
Official definition
This industry comprises establishments primarily engaged in one or more of the following: (1) manufacturing synthetic resins, plastics materials, and nonvulcanizable elastomers and mixing and blending resins on a custom basis; (2) manufacturing noncustomized synthetic resins; and (3) manufacturing synthetic rubber.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing plastics resins and converting resins into plastics products are classified in Industry Group 3261, Plastics Product Manufacturing.
- Processing natural, synthetic, or reclaimed rubber into intermediate or final products are classified in Industry Group 3262, Rubber Product Manufacturing.
- Custom compounding resins made elsewhere are classified in Industry 32599, All Other Chemical Product and Preparation Manufacturing.
- Manufacturing resin adhesives are classified in Industry 32552, Adhesive Manufacturing.
Codes in 32521
Data last changed November 14, 2026. How this page is built.