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.
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
| NAICS Code | 326121 |
|---|---|
| Industry Title | Unlaminated Plastics Profile Shape Manufacturing |
| SBA Size Standard | 600 employees |
| U.S. Establishments | 335 (Census CBP, 2023) |
| IRS PBA Code | 326100 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 326 → 3261 |
| Source / Verified | US Census 2022 NAICS Manual, Census CBP / 2026-06-28 |
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)
Related Resources & Compliance Guides
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.
- 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.
Related Industries in 3261
Frequently Asked Questions (FAQ)
Is 326121 a valid 2022 NAICS code?
NAICS 326121 is 'Unlaminated Plastics Profile Shape Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 600 employees.
What is the SBA size standard for NAICS 326121?
The SBA small business size standard for NAICS 326121 is 600 employees (based on employees).
What is the legacy SIC code mapping for 326121?
NAICS code 326121 maps to the legacy 1987 SIC codes: 3082 - Unsupported Plastics Profile Shapes, 3089 - Plastics Products, NEC.