Insulfab Plastics

What Insulfab Plastics does

InsulFab Plastics, Inc. is a privately held U.S. contract manufacturer specializing in tight-tolerance CNC machining and plastic stamping/die-cutting of engineering and high-performance plastic materials. Founded in 1923 by Frank J. Hanus in Spartanburg, South Carolina, the company operates a single plastics-only manufacturing facility designed to eliminate metal contamination and serves OEM customers across four regulated end markets: medical device manufacturing, energy and electrical infrastructure, aerospace and defense, and semiconductor manufacturing equipment. Its materials portfolio spans more than 50 thermoplastics, thermosets, and composites, including PEEK, Vespel, Torlon, Celazole PBI, Ultem, PTFE and other fluoropolymers, ESD static-dissipative grades, and glass-epoxy laminates such as G-10 and FR-4.

The company's core technology stack is built around precision CNC capabilities (3-, 4-, and 5-axis milling, Swiss turning, mill-turn, and routing), a complete in-house tool and die shop supporting high-speed progressive die stamping, and value-added secondary services (ultrasonic cleaning, cryogenic deburring, painting/coatings). Quality credentials include ISO 9001:2015 certification and ITAR registration valid through 2027, enabling participation in defense and aerospace supply chains. Go-to-market is sales-led and event-driven: direct OEM engagement supported by a Quick Quote online intake, trade show presence, and an extensive content-marketing library of material-specific technical content.

Revenue is generated primarily through custom contract manufacturing billed on a quote-based, per-project basis with multi-year contract cadence at OEM customers. Pricing is determined by material type, tolerance, complexity, and order quantity, with no public rate cards. There are no disclosed funding rounds, no parent company, no institutional investors, no acquisitions, and no revenue figures published. Distribution is single-country/domestic, focused on North American OEMs, with all production concentrated at the Spartanburg headquarters.

Name

Insulfab Plastics

Legal name

InsulFab Plastics, Inc.

Website

https://insulfab.com

Company type

Private

Founded year

1923

Operating status

Operating

Headcount range

101–250 employees

Short description

InsulFab Plastics is a privately held, ISO 9001:2015 and ITAR-registered contract manufacturer in Spartanburg, SC, providing tight-tolerance CNC machining and plastic stamping of 50+ engineering and high-performance plastics for medical, aerospace, semiconductor, and energy OEM customers.

Ownership category

akta.pro rank

Headquarters

HQ city

Spartanburg

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. CNC Machining Services: Precision CNC machining of engineering and high-performance plastic materials including 3, 4, 5 axis machining, Swiss machining, mill-turn, and routing operations. Revenue generated through contract manufacturing of custom tight-tolerance plastic components.
2. Plastic Stamping & Die-Cutting Services: High-performance plastic and non-metallic material stamping from prototype to production, including high speed progressive die stamping and single stroke compound dies. Also includes miniature plastic stamping and die-cutting services.
3. Value-Added Secondary Services: Additional services including ultrasonic cleaning, cryogenic deburring, and painting/coatings of machined plastic parts for specific requirements such as anti-mold/fungus coatings or UV inhibitors.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Insulfab Plastics is a contract manufacturer that produces tight-tolerance custom plastic components through precision CNC machining (3/4/5-axis milling, Swiss turning, mill-turn, and routing) and high-speed progressive die stamping/die-cutting. The company works exclusively with engineering and high-performance thermoplastic and thermoset materials across 50+ material grades for OEM customers in Medical, Aerospace & Defense, Semiconductor, and Energy markets.

Product overview

InsulFab Plastics is a precision plastic component manufacturing company offering two core services: CNC Machining and Plastic Stamping & Die-Cutting. The company machines and stamps a comprehensive portfolio of high-performance engineering plastics and composite materials for Medical, Energy, Aerospace & Military, and Semiconductor markets. Core CNC machining capabilities include 3/4/5-axis milling, CNC turning, Swiss machining, routing, and mill-turn operations. Core stamping services include progressive high-speed die stamping and die-cutting with complete in-house tool and die manufacturing. Materials processed include PEEK, PTFE (Teflon), Vespel, Semitron, Torlon, Meldin, Celazole, Ultem, Nylon, Delrin, Acetal, Acetron, UHMW, Polycarbonate, PVC, and various fluoropolymers (PFA, ETFE, PCTFE, PVDF), composite laminates (G-10, FR-4, G-7, G-9, G-11, G-3, GPO-3), and specialty materials (Mica, Nomex, Kapton, Formex). Value-added secondary services include ultrasonic cleaning, cryogenic deburring, and custom painting/coatings. The company emphasizes a 'Plastics Only' environment free of metal contaminants to ensure component integrity.

Differentiator

Problem solved

Functional benefit

Products and services

• CNC Machining Services Precision CNC machining of engineering and high-performance plastic materials using 3-axis, 4-axis, and 5-axis milling, CNC turning, Swiss machining, CNC routing, and mill-turn operations. Serves OEM customers in Medical, Aerospace & Defense, Semiconductor, and Energy markets that require tight-tolerance plastic components free of metal contamination.
• Plastic Stamping & Die-Cutting High-speed progressive die stamping and die-cutting services for plastic and non-metallic materials, including miniature plastic stamping. Backed by a complete in-house Tool & Die shop that handles die design, manufacturing, and maintenance throughout the die life cycle. Serves OEMs needing high-volume precision stamped plastic components for electrical insulation and industrial applications.
• Value-Added Secondary Services Secondary finishing services for machined and stamped plastic components, including ultrasonic cleaning, cryogenic deburring, and custom painting/coatings such as anti-mold, fungus, and UV inhibitor coatings. Allows customers to consolidate finishing with a single qualified supplier.
• Quick Quote Service Online quote request service that allows prospective OEM customers to submit project details, drawings, and files to receive pricing estimates for custom CNC machining and plastic stamping projects.

Quantifiable outcome

• Zero metal contamination in plastic components through dedicated plastics-only facility
• +1 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators2 records

Recent moves4 records

Expansion highlights5 records

Direct peers

• Ray Products: Custom plastic machining and fabrication services with an extensive engineering-plastic material portfolio and AS/ISO quality certifications. Direct competitor in precision-machined plastic components for medical, industrial, and semiconductor applications.
• Crescent Industries: Custom injection molding and machining services for engineered plastic components serving medical, aerospace, and industrial OEMs. Comparable as a custom plastics contract manufacturer serving similar regulated end markets, though its primary process is injection molding rather than CNC machining.
• Protomatic: Precision CNC machining shop for plastics, metals, and additive manufacturing serving aerospace, medical, and defense OEMs with tight-tolerance custom components. Directly comparable to InsulFab in core capability set (CNC machining of engineering plastics) and target customer base.
• Micross: Precision microelectronic and semiconductor component supplier including custom plastic packaging, test sockets, and wafer-handling parts. Comparable in semiconductor vertical, particularly for ESD-safe plastics and tight-tolerance polymer components used in capital equipment.
• Paragon Medical: Medical device contract manufacturer with precision machining and assembly capabilities for implants, instruments, and surgical devices. Direct peer in the medical-device primary segment with overlapping quality-system requirements and tight-tolerance component work.

Broad incumbents

• Triumph Group: Aerospace and defense precision components manufacturer with structural, mechanical, and specialty product lines. Comparable in the aerospace and defense vertical for tight-tolerance component manufacturing, though it operates across metals and composites at much larger scale.
• The Rodon Group: High-volume plastic injection molder with broad material capabilities serving industrial and consumer markets. Broader incumbent in plastic component manufacturing with significantly larger scale than InsulFab's niche custom machining focus.
• Diversified Plastics: Custom plastic injection molder serving medical, aerospace, and industrial OEMs with engineered plastic components. Broader incumbent in the same custom-plastics-manufacturing space, but its primary process is injection molding rather than CNC machining of high-performance polymers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

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 Insulfab Plastics