What CONNOMAC CORPORATION does

Connomac Corporation, founded in 1975 by Greg McDonnell and headquartered in La Grange, Illinois, manufactures custom molded neoprene rubber electrical connectors. The company operates as a division of sandman.com, Inc., which is led by President Chuck Hall (since 2015). Connomac's products are purpose-built for harsh industrial environments, with one-piece molded construction eliminating exposed metal parts and achieving waterproof, flame-resistant, oil/dust/ozone/sunlight-resistant performance. The product portfolio is organized around two core lines: Conno-Maxx, a heavy-duty family (round connectors, oval connectors, Conno-Change quick-disconnect, shrouded 120V connectors, temporary light cords, and Conno-Lock cam-lock series in 9, 15, 16, and 18 designations) aimed at temporary lighting and power distribution; and Minni-Mac, a miniature neoprene molded connector and cord line with 2-12 pole configurations and 90-degree angle options for machinery wiring. A custom products division produces proprietary assemblies for rail cars, shipyards, dairy, food processing, and nuclear power plants. The company protects its technology with five registered trademarks (Conno-Maxx, Minni-Mac, Conno-Change, Conno-Flex, Ruggedized) and 50+ years of accumulated neoprene compounding expertise.

The business model is direct-to-customer manufacturing with no minimum order, same/next day shipping on stock items, and custom production to customer specification. Products are shipped from the single La Grange facility, with a sales team reachable by phone (708-482-3434) and email ([email protected]). Pricing is unit-based and not publicly disclosed; revenue is generated through one-time product sales rather than subscriptions or licensing. The customer base spans 16 vertical markets, with primary verticals being tunneling, scrap yards, steel plants, railroad, shipbuilding, oil & gas refineries, and oil & gas, and secondary verticals including dairy, amusement parks, conveyors, packaging, automated assembly, robotics, food & beverage processing, injection molding, and material handling. Geographic reach extends across the United States, Canada, South America, and parts of Europe via direct shipment. Documented customer relationships include Ohio Magnetics (30+ years), Tunnel Electric Inc., The Robbins Company (10+ years, thousands of cables), and J.F. Shea Construction. The company has 1-10 employees and no external funding; it is privately held within the sandman.com, Inc. parent structure.

Name

CONNOMAC CORPORATION

Legal name

Connomac Corporation

Website

https://connomac.com

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

1–10 employees

Short description

Connomac Corporation, founded in 1975 and based in La Grange, Illinois, manufactures custom molded neoprene rubber electrical connectors. It operates as a division of sandman.com, Inc., serving 16 industrial verticals including tunneling, steel plants, scrap yards, railroads, oil and gas, and food processing, with direct sales and no minimum order policy.

Ownership category

akta.pro rank

Product category

Industrial Electrical Connectors

NAICS

Other Rubber Product Manufacturing (32629), Wiring Device Manufacturing (33593)

SIC

Fabricated Rubber Products, Nec (3060), Electric Lighting & Wiring Equipment (3640)

akta.pro primary industry

Molded & Extruded Industrial Rubber Parts (Custom Components) (IMANALAG)

Keywords

• Custom molded electrical connectors
• Neoprene rubber connectors
• Industrial power cables
• Harsh environment electrical connectors
• Temporary lighting power cords

Headquarters

HQ city

La Grange

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Electrical Connector and Cable Sales: Direct sales of custom molded neoprene rubber electrical connectors, temporary lighting and power cords. Products are made to order with no minimum quantity requirements. Revenue generated through one-time product sales with quick turnaround times.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Connomac Corporation manufactures custom molded neoprene rubber electrical connectors and cables designed for harsh industrial and construction environments. The company produces two core product lines — Conno-Maxx (heavy-duty connectors for temporary lighting and power distribution) and Minni-Mac (miniature connectors for machinery wiring) — featuring one-piece molded construction, waterproof and flame resistant designs, and no on-site assembly requirements. Products are custom made to specification with no minimum order quantity and are sold directly to industrial customers.

Product overview

Connomac Corporation manufactures two core product lines of rubber molded electrical connectors: Conno-Maxx and Minni-Mac. Conno-Maxx is a comprehensive line of heavy-duty neoprene connectors designed for temporary lighting and power distribution in harsh industrial and construction environments including tunneling, steel plants, scrap yards, railroads, and shipyards. The line includes round connectors, oval connectors, Conno-Change quick-disconnect connectors, shrouded 120V connectors, temporary light cords, and Conno-Lock connectors in multiple series. Minni-Mac is a product line of miniature molded connectors designed for machinery wiring applications across diverse industries including packaging, robotics, food and beverage processing, conveyor systems, and material handling. Both product lines feature one-piece neoprene rubber molded construction, are waterproof and flame resistant, and require no on-site assembly. The company also offers custom product manufacturing for proprietary applications.

Differentiator

Problem solved

Functional benefit

Brands

• Conno-Maxx®: A product line of heavy-duty rubber molded electrical connectors including round connectors, oval connectors, Conno-Change II, shrouded 120V connectors, Conno-Lock series connectors, and temporary light cords. Used for tunneling, scrap yards, steel plants, railroads, shipbuilding, dairy, oil and gas refineries, and amusement parks.
• Minni-Mac®

Products and services

• Conno-Maxx A comprehensive line of heavy-duty neoprene rubber molded electrical connectors designed for harsh industrial and construction environments. Includes round connectors, oval connectors, Conno-Change quick-disconnect connectors, shrouded 120V connectors, temporary light cords, and Conno-Lock connectors in 9, 15, 16, and 18 series. Used for tunneling, scrap yards, steel plants, railroads, shipbuilding, dairy, oil and gas refineries, and amusement parks.
• Minni-Mac A product line of miniature neoprene molded connectors and cords with one-piece construction and no exposed metal parts. Available in multiple pole configurations (2-12 poles) and 90-degree angle options. Used for machinery wiring in industrial environments including packaging, robotics, food processing, automated assembly equipment, injection molding, and material handling.
• Custom Products Custom connector and cable manufacturing services for proprietary applications. Products are used in rail cars, ship yards, dairy farms, food processing facilities, and nuclear power plants. Connomac produces proprietary/secret custom products for select customers with no minimum order quantity.

Quantifiable outcome

• Over 30 years of customer relationships with companies like Ohio Magnetics
• +2 more outcomes

Named customers4 records

Segments16 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• sandman.com, Inc.parent_companyOthersConnomac Corp is now part of sandman.com, Inc. Connomac operates as a division of sandman.com, Inc. The parent company is led by President Chuck Hall who became President of sandman.com, Inc. in 2015 and has helped the company grow through technology improvements and increasing production efficiency.

Scale indicators2 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• Walther Electric: Industrial pin-and-sleeve and harsh-environment connectors with custom configurations. Comparable to Connomac's Minni-Mac multi-pole and custom molded cable offerings.
• Ericson Manufacturing: Produces temporary lighting and power distribution products for construction, industrial, and tunneling applications. Highly comparable to Connomac's tunnel-ready temporary light cords and drops.
• Meltric Corporation: Manufacturer of industrial plugs and receptacles with safety features (dead-front design, quick disconnect) for harsh industrial environments. Closest direct peer to Connomac's Conno-Maxx and Conno-Lock connector lines.

Broad incumbents

• Hubbell Wiring Device-Kellems: Large US manufacturer of wiring devices including Twist-Lock and severe-duty industrial plugs and receptacles. Competes broadly in industrial connector categories served by Connomac.
• Leviton Manufacturing: Established manufacturer of electrical wiring devices for industrial, commercial, and residential markets. Provides broader-line competition in industrial pin-and-sleeve connectors.
• Cooper Crouse-Hinds (Eaton): Eaton division producing explosion-proof and harsh-environment electrical products including plugs, receptacles, and connectors. Overlaps with Connomac's hazardous-location and oil & gas refinery customers.
• Amphenol Industrial: Global supplier of industrial interconnect products including harsh-environment connectors. Comparable in harsh-environment electrical connectivity but at much larger scale and broader scope.
• Mennekes (by Eaton): Major manufacturer of industrial plugs, sockets, and connectors for global markets, now part of Eaton. Competes with Connomac in industrial power distribution but offers a much broader catalog and standard (non-rubber molded) lines.

Regional players

• Bals Elektrotechnik: German manufacturer of CEE industrial plugs, sockets, and connectors serving European industrial markets. Comparable product category to Connomac but focused on Europe rather than North America.

Emerging players

• PowerTemp Systems: Smaller specialty supplier of temporary power distribution and lighting for industrial and construction sites. Adjacent niche player in the same end applications as Connomac's temporary lighting cords.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/connomaccorp
• Facebookfacebook.com/Connomac-Corporation-154411184596172
• LinkedInlinkedin.com/company/connomac-corp-
• Instagraminstagram.com/connomaccorporation

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CONNOMAC CORPORATION