What Durex Industries does

Durex Industries, headquartered in Cary, Illinois and founded in 1980, designs and manufactures custom electric industrial heaters and temperature sensors for OEM and process-industry customers. The company operates as a wholly-owned subsidiary of Spirax Group plc, a UK-listed multi-national thermal energy management and niche pumping specialist, and functions as one of Spirax's portfolio operating companies. Durex employs between 251 and 500 people across a vertically integrated footprint that includes foundry, machining, forming, metalworking, polishing, and an ISO #6 certified 1,300 sq ft cleanroom with orbital welding for high-purity weldments.

The company's product portfolio is organized into four core categories: Electric Heaters (immersion, circulation, storage tank, flexible silicone rubber / polyimide / etched foil mica, mica, cast-in, cartridge, mineral insulated cable, coil, tubular, and the proprietary Sentinel® Heater & Insulation Systems); Process Heating Systems (complete integrated thermal solutions); Temperature Sensors (RTDs, thermocouples including platinum/noble metal and silicon-carbide types rated to 1600°C, thermistors, and IC sensors, with the proprietary Durexium™ 16-layer TiN/ZrN PVD non-stick coating on melt bolt variants); and Temperature Control Panels. A dedicated Semiconductor Equipment line — pedestal heaters for 200/300mm wafer processing, hot chuck, vacuum chamber, bake/chill platen, 316L immersion, conduction and radiant heating panels — serves CVD/PVD processes up to 650°C+ and adjacent photovoltaic manufacturing.

Durex generates revenue through direct, quote-based sale of custom-engineered hardware to enterprise customers across at least eight verticals: semiconductor wafer fabrication (the primary segment), process industries, plastics processing, food service, packaging, life sciences, aerospace/defense/security, and power generation/renewable energy/energy storage. Go-to-market is sales-led through a dedicated 1-800 number, a 'Request a Quote' funnel, direct engineering engagement with a Single Point of Contact (SPOC) on each project, and a content-rich website that includes a Part Builder tool, selection guides, and engineering documentation. Pricing is not publicly disclosed. The company emphasizes fast quoting, fast prototype builds, copy-exact and change-control methodologies, and engineering partnership across design, development, build, and production ramp phases.

Name

Durex Industries

Legal name

Durex Industries

Website

https://durexindustries.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

251–500 employees

Short description

Durex Industries is a US-based custom manufacturer of electric industrial heaters, temperature sensors, and thermal control systems serving semiconductor, aerospace, life sciences, plastics, packaging, and process-industry OEMs. It operates as a wholly-owned subsidiary of Spirax Group plc with vertically integrated manufacturing and an ISO #6 cleanroom.

Ownership category

akta.pro rank

Product category

Industrial Electric Heaters and Thermal Management Equipment

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Power Boiler and Heat Exchanger Manufacturing (332410), Semiconductor Machinery Manufacturing (333242), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Industrial Process Furnace and Oven Manufacturing (333994)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Industrial Process Furnaces & Ovens (3567), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC)

akta.pro secondary industries

Thermal Processing Equipment (Furnaces/RTP/Anneal) (HDAHAEAE), Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF), Thermal Management Components (Heat sinks, TIMs, fans/blowers, thermal pads) (IMAGAJAL)

Keywords

• Industrial electric heaters
• Temperature sensors
• Process heating systems
• Thermal management solutions
• Semiconductor thermal equipment

Headquarters

HQ city

Cary

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Heater Manufacturing: Design and manufacture of custom electric heaters including immersion heaters, cartridge heaters, flexible heaters, cast-in heaters, circulation heaters, and process air heaters. Revenue is generated through product sales with engineering design partnership embedded in the offering.
2. Temperature Sensors: Manufacture of temperature sensors including RTDs, thermocouples, thermistors, and IC sensors for industrial applications
3. Temperature Controls & Panels: Temperature control panels and systems for process heating applications
4. Semiconductor Equipment Thermal Solutions: Specialized thermal solutions for semiconductor manufacturing including pedestal heaters, hot chuck heaters, vacuum chamber heaters, and platen heaters

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Durex Industries designs and manufactures custom electric industrial heaters, temperature sensors (RTDs, thermocouples, thermistors, IC sensors), temperature control panels, and complete process heating systems for industrial customers. The company also produces specialized thermal solutions for semiconductor wafer fabrication equipment including pedestal heaters, hot chuck heaters, vacuum chamber heaters, and platen heaters, supporting processes up to 650C+. Offerings are delivered with embedded engineering design partnership, vertically integrated manufacturing (foundry, machining, forming, metalworking, ISO #6 cleanroom), and rapid quoting and prototype builds.

Product overview

Durex Industries, part of Spirax Group, is a custom thermal solutions manufacturer with over 40 years of experience. The company offers a comprehensive portfolio of industrial heating and temperature sensing products organized into four core categories: Electric Heaters (including immersion heaters, circulation heaters, flexible heaters, cast-in heaters, cartridge heaters, mineral insulated cable heaters, and coil heaters), Process Heating Systems (complete integrated thermal solutions), Temperature Sensors (RTDs, Thermocouples, Thermistors, and IC Sensors in various configurations), and Temperature Control Panels. Additionally, they provide specialized Semiconductor Equipment including pedestal heaters, chamber heaters, and platen heaters for wafer processing. Their products serve diverse industries including semiconductor manufacturing, power generation, plastics processing, life sciences, aerospace/defense, food service, and packaging. The company offers custom engineering design and manufacturing services alongside standard product lines, with manufacturing capabilities including foundry, machining, forming, metalworking, and a certified cleanroom for semiconductor applications.

Differentiator

Problem solved

Functional benefit

Brands

• Durexium™: A non-stick, multilayer coating option for melt bolt style temperature sensors, consisting of 16 layers of Titanium Nitride and Zirconium Nitride using a cathodic arc PVD process at 800°F, providing Vickers hardness of over 4400 Hv.

Products and services

• Electric Heaters Custom electric heaters for industrial applications including process heating, immersion, circulation, inline, and air heating. Product families include screw plug and flange immersion heaters, over-the-side immersion, pipe insert (drywell) heaters, tubular heating elements, cartridge heaters, mineral insulated cable heaters, flexible heaters (silicone rubber, polyimide/Kapton, etched foil mica), cast-in heaters (cast band, platen, ring, circulation), coil heaters, and the proprietary Sentinel Heater & Insulation Systems. Sold to industrial OEMs and processors.
• Temperature Sensors Comprehensive range of temperature sensors including Resistance Temperature Detectors (RTDs), Thermocouples (general purpose, mineral insulated, industrial, specialty including platinum/noble metal, silicon carbide, multipoint, protection tube, melt bolt, diesel engine, miniature), Thermistors, and IC Sensors. Configurations include thermowells, Teflon-coated, integrated 4-20mA transmitters, and specialty variants for harsh, high-pressure, and corrosive process environments. Sold to industrial process and OEM customers.
• Temperature Control Panels Control panels integrating temperature controllers, sensors, and heating elements for complete thermal management solutions in industrial processes. Sold to industrial customers as part of an integrated thermal loop offering.
• Process Heating Systems Complete industrial process heating systems integrating heaters, sensors, and controls for optimal thermal management in manufacturing and industrial processes. Sold to industrial customers requiring turnkey thermal solutions.
• Semiconductor Equipment Thermal Solutions Thermal solutions for semiconductor and photovoltaic manufacturing including pedestal heaters (standard and special material for 200mm/300mm wafer processing), cast-in hot chuck heaters, cast vacuum chamber heaters, bake platen heaters, bake/chill pedestal and platen heaters, high-temperature platen heaters, 316L stainless steel immersion heaters, conduction and radiant heating panels, cartridge heater assemblies, and cable (coil) heaters. Sold to semiconductor equipment OEMs and wafer fabrication facilities.
• Durexium Non-Stick Coating (Melt Bolt Sensor Upgrade) Proprietary multi-layer PVD coating option for melt bolt temperature sensors that increases wear life up to 12 times, prevents material buildup, and improves bolt removal in abrasive plastic processing applications. Sold as an upgrade/option for melt bolt thermocouples serving plastics processing customers.

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Watlow Electric Manufacturing Company: Watlow is one of the largest US-based manufacturers of custom industrial electric heaters, temperature sensors, and controllers—closely mirroring Durex's product portfolio (cartridge, flexible, cast-in, immersion heaters, RTDs, thermocouples) and serving the same semiconductor, plastics, aerospace, and process-industry end markets.
• Chromalox: Chromalox designs and manufactures industrial electric heating and temperature control solutions including immersion, circulation, process air, and flexible heaters, plus temperature sensors. It is a fellow Spirax Group operating company and the most direct internal comparable to Durex.
• Backer Hotwatt: Backer Hotwatt manufactures custom and standard electric heaters (cartridge, immersion, tubular, flexible, cast-in) and temperature sensors for industrial OEMs, directly overlapping Durex's core heater and sensor product lines and customer base.
• Tempco Electric Heater Corporation: Tempco produces a broad catalog of electric heaters (band, cartridge, strip, immersion, flexible, cast-in) and temperature sensors, competing head-to-head with Durex in plastics, packaging, and general industrial process heating.
• Tutco (a HEAT Group company): Tutco manufactures open coil, tubular, flexible, and custom electric heating elements for industrial, medical, semiconductor, and aerospace applications—a comparable custom-engineered electric heater portfolio to Durex, including semiconductor process heating solutions.
• Heatron: Heatron designs and manufactures custom industrial heaters, heat plates, and thermal subsystems for semiconductor, medical, aerospace, and industrial customers, overlapping directly with Durex's custom thermal solutions and semiconductor equipment business.
• Minco Products, Inc. Minco manufactures flexible heaters (polyimide, silicone rubber), RTDs, thermocouples, and thermal subsystems for medical, aerospace, semiconductor, and industrial OEMs, with a comparable custom-engineering and sensors-plus-heaters product mix to Durex.
• Omega Engineering: Omega is a large catalog and custom manufacturer/supplier of temperature sensors (thermocouples, RTDs, thermistors, IC), heaters, and process instrumentation, directly comparable to Durex on the temperature-sensing and heater side across industrial process applications.

Regional players

• Hotset GmbH: Hotset is a German-based manufacturer of cartridge heaters, hot runner system heaters, temperature sensors, and process heating solutions for plastics processing and industrial OEMs—an EU counterpart with overlapping product and end-market focus versus Durex.
• Winkler GmbH: Winkler is a European manufacturer of industrial electric heating solutions (heating mats, cartridge, flexible, and special heaters) for plastics, packaging, and process industries—a geographic peer with overlapping product lines versus Durex.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/durex-industries

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 Durex Industries