326121 — Unlaminated Plastics Profile Shape Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in converting plastics resins into nonrigid plastics profile shapes (except film, sheet, bags, and hoses), such as rod, tube, and sausage casings (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Manufacturing plastics film, plastics unlaminated sheet, and plastics bags--are classified in Industry 32611,
- Plastics Packaging Materials and Unlaminated Film and Sheet Manufacturing; and
- Manufacturing plastics hoses--are classified in Industry 326220, Rubber and Plastics Hoses and Belting
- Manufacturing.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3082 - Unsupported Plastics Profile Shapes (via SIC1987:3082→NAICS1997:326121→2002:326121→2007:326121→2012:326121→2017:326121→2022:326121)
- SIC 3089 - Plastics Products, NEC (via SIC1987:3089→NAICS1997:326121→2002:326121→2007:326121→2012:326121→2017:326121→2022:326121)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3620 — Rubber and Plastics Working Machinery
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 326121 valid in 2022? ▾
Yes, 326121 is a valid 6-digit 2022 NAICS national industry code representing 'Unlaminated Plastics Profile Shape Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 326121? ▾
The Small Business Administration (SBA) has established a small business size standard of 600 employees for NAICS code 326121 (Unlaminated Plastics Profile Shape Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 326121? ▾
According to official Census Bureau concordance tables, NAICS code 326121 (Unlaminated Plastics Profile Shape Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3082 - Unsupported Plastics Profile Shapes, 3089 - Plastics Products, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 326121:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 326121 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Unlaminated Plastics Profile Shape Manufacturing).
- IRS PBA Code for Plastics Manufacturing — Principal Business Activity tax reporting details.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.