325991

Custom Compounding of Purchased Resins

Manufacturing › Chemical Manufacturing › Other Chemical Product and Preparation Manufacturing

SBA Size Standard

600 employees

Employee-Based Verify at SBA.gov →

NAICS Code Hierarchy

32

Sector

Manufacturing

325

Subsector

Chemical Manufacturing

3259

Industry Group

Other Chemical Product and Preparation Manufacturing

325991

National Industry (This Code)

Custom Compounding of Purchased Resins

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual
This U.S. industry comprises establishments primarily engaged in (1) custom mixing and blending plastics resins made elsewhere or (2) reformulating plastics resins from recycled plastics products.

✓ Small Business Eligibility at a Glance

Based on SBA Table of Small Business Size Standards (2024)

Size Standard

600 employees

Measurement Period

Current count

Standard Type

Employee-Based

Applies To

All contracts under NAICS 325991

Set-Aside Programs

8(a), WOSB, HUBZone, SDVOSB

Certification Required

No (self-certify in SAM.gov)

Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.

Cross-References

The following activities are classified elsewhere in the NAICS system:

Establishments primarily engaged in manufacturing synthetic resins and custom mixing and blending resins are classified in U.S. Industry 325211, Plastics Material and Resin Manufacturing.

How to Use NAICS 325991 in SAM.gov

NAICS code 325991Custom Compounding of Purchased Resins — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Other Chemical Product and Preparation Manufacturing space will be able to find your business.

If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of 600 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 325991.

Log in Entity Registration Goods & Services Add NAICS Code Enter 325991 Save

Frequently Asked Questions

What is NAICS code 325991?

NAICS code 325991 is 'Custom Compounding of Purchased Resins', classified under the Manufacturing sector (NAICS 32). This U.S. industry comprises establishments primarily engaged in (1) custom mixing and blending plastics resins made elsewhere or (2) reformulating plastics resins from recycled plastics products. Cr

What is the SBA small business size standard for NAICS code 325991?

The SBA defines a small business under NAICS code 325991 (Custom Compounding of Purchased Resins) as one with 600 employees. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.

How do I register NAICS code 325991 in SAM.gov?

To register NAICS code 325991 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 325991 (Custom Compounding of Purchased Resins) to your NAICS code list. You may designate one code as your Primary NAICS code.

Quick Actions

Related NAICS Codes

Other codes in Other Chemical Product and Preparation Manufacturing

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

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