What Conax Technologies does

Conax Technologies LLC is a privately held U.S. manufacturer of industrial sensing and sealing components headquartered in Buffalo, New York, founded in 1950. The company designs and produces three core product lines: compression seal fittings (single-element, multi-element, high-performance, fiber optic, and industry-specific variants); temperature sensors (RTD assemblies, thermocouple assemblies in general and high-temperature configurations, thermowells, mineral insulated cable including the proprietary Con-O-Clad™ product, and transmitters/controllers); and cable and harness assemblies. Underlying technology centers on precision mechanical sealing, mineral-insulated cable manufacturing, and patented functional enhancements such as EtchDefender™ coating for semiconductor epitaxial reactors and spring-loaded exhaust gas sensors for Frame 7 and 9 gas turbines.

The company operates manufacturing facilities in Buffalo, New York; Tempe, Arizona; and Sto. Tomas, Batangas, Philippines (via wholly-owned subsidiary Conax Philippines Inc.), with a sales office in Shanghai, China. Quality and qualification systems include NADCAP certification for aerospace electronics, AS9100D with ISO 9001 across all manufacturing facilities (as of May 2026), an ISO/IEC 17025:2017 accredited calibration laboratory, AMS2750-compliant furnace sensor calibration, IPC/WHMA-A-620 and J-STD-001 electronics certifications, and hazardous location product certifications (ATEX, CSA/FM, IECEx, KTL), plus CRN and PED compliance for Canadian and European markets.

Conax sells direct to enterprise and mid-market industrial buyers through field sales, application specialists, and an inside-sales literature/inquiry system, complemented by trade show presence at Space Tech Expo USA, WTUI, SEMICON West, and the 7F Users Group. Revenue is generated primarily through one-time equipment sales of engineered-to-order and standard catalog components, supplemented by engineering services, calibration, and a precious metals reclamation program. Primary end markets are aerospace & defense, semiconductor manufacturing, and power generation, with secondary exposure to oil & gas/petrochemical, pharmaceutical, furnace/heat treatment, and industrial manufacturing. Pricing is quote-based and not publicly disclosed, with multi-year contractual commitments typically associated with custom-designed solutions.

Name

Conax Technologies

Legal name

Conax Technologies LLC

Website

https://conaxtechnologies.com

Company type

Private

Founded year

1950

Operating status

Operating

Headcount range

51–100 employees

Short description

Conax Technologies is a privately held U.S. manufacturer (founded 1950, Buffalo NY) of custom compression seal fittings, temperature sensors (thermocouples and RTDs), and cable/harness assemblies serving aerospace, semiconductor, power generation, and other industrial markets worldwide.

Ownership category

akta.pro rank

Product category

Industrial Sensors and Sealing Components

NAICS

Fluid Power Valve and Hose Fitting Manufacturing (332912)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)

akta.pro secondary industry

Aerospace Seals, Gaskets, O-Rings & Elastomeric Components (IMABANAF)

Keywords

• Compression seal fittings
• Thermocouple assemblies
• RTD temperature sensors
• Custom cable harness
• Industrial sealing solutions

Headquarters

HQ city

Buffalo

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Product Sales - Compression Seal Fittings: Conax generates revenue through the sale of standard and custom-designed compression seal fittings for pressure and vacuum sealing applications across industries including aerospace, semiconductor, power generation, oil and gas, and pharmaceutical.
2. Product Sales - Temperature Sensors: Revenue from thermocouples, RTD assemblies, and temperature sensors for industrial process measurement and control applications. Includes mineral insulated cable products.
3. Product Sales - Cable and Harness Assemblies: Custom and standard cable harness assemblies for aerospace, power generation, and semiconductor applications, including specialized wire sealing solutions.
4. Engineering Services and Calibration: Customized engineering, test, calibration services, and precious metals reclamation programs for thermocouples. State-of-the-art manufacturing facility provides prototyping and design assistance.
5. Accessories and Replacement Parts: Replacement conductors/electrodes, insulators, packing sets, sealants, thread seal materials, and other accessories for their product lines.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Conax Technologies designs and manufactures precision-engineered compression seal fittings, temperature sensors (thermocouples, RTDs), and custom cable and harness assemblies for industrial customers in aerospace & defense, semiconductor, power generation, oil & gas, pharmaceutical, and furnace applications. The company uses mineral insulated cable technology and proprietary patented designs (EtchDefender™, LeakDefender™, spring-loaded exhaust gas sensors, Con-O-Clad™) to deliver leak-proof, high-temperature, and high-vacuum sealing and measurement solutions, complemented by in-house engineering, calibration, and precious metals reclamation services.

Product overview

Conax Technologies is a manufacturer of industrial components comprising three core product lines: Compression Seal Fittings (pressure and vacuum sealing assemblies), Temperature Sensors (RTD assemblies, thermocouples, and associated components), and Cable & Harness Assemblies. The Compression Seal Fitting product line includes Single Element Fittings, Multiple Element Fittings, High Performance Fittings, and industry-specific variants for Power Generation, Semiconductor, and Furnace & Autoclave applications, plus Fiber Optic Fittings and Special Applications. The Temperature Sensors line encompasses RTD Assemblies, Thermocouple Assemblies (General and High Temp variants), Mineral Insulated Cable, Transmitters/Controllers, Thermowells, Termination Styles, and specialized solutions for Semiconductor applications. The Cable and Harness Assemblies product serves aerospace and power generation sectors. Accessories include replacement parts, wire, and components. All three product lines are offered alongside engineering services, calibration, and technical literature.

Differentiator

Problem solved

Functional benefit

Brands

• LeakDefender: Patented leak detection technology for compression seal fittings
• EtchDefender
• Wake Frequency Solution Builder
• Con-O-Clad
• Steriwire
• Sterimaster

Products and services

• Compression Seal Fittings Leak-proof feedthrough assemblies that seal wires, electrodes, thermocouples, and fiber optics through pressure and vacuum boundaries for industrial applications across aerospace, semiconductor, power generation, oil and gas, and pharmaceutical sectors.
• Single Element Fittings Compression seal fittings that seal a single wire, electrode, or probe through a pressure boundary, including metal ferrule fittings, power compression seal feedthroughs, and split compression seal fittings.
• Multiple Element Fittings Compression seal fittings that seal multiple wires, electrodes, or probes simultaneously through a pressure boundary, with options including or excluding factory-installed wires/electrodes.
• High Performance Fittings Advanced compression seal fittings engineered for high-pressure and high-temperature applications, including instrumentation wire feedthroughs and high-temperature feedthroughs.
• Fittings - Power Generation Compression seal fittings tailored for gas and steam turbine sensor and seal applications in power generation facilities.
• Fittings - Semiconductor Compression seal fittings designed for semiconductor processing applications, including fiber optic feedthroughs for lithography tools and sealing solutions for HAST chambers.
• Fittings - Furnace & Autoclave Compression seal fittings designed for high-temperature furnace and autoclave applications requiring reliable sealing under extreme thermal conditions.
• Fiber Optic Fittings Compression seal fittings engineered for fiber optic cable feedthrough applications, enabling optical signal transmission through pressure boundaries.
• Special Applications Fittings Custom and specialty compression seal fittings for unique industrial requirements including hazardous location conduit seals and other custom configurations.
• Accessories and Parts Replacement components including power lead insulated wire, replacement conductors/electrodes, insulators, packing sets, sealants, and thread seal materials for compression seal fitting installations.
• Temperature Sensors Comprehensive range of industrial temperature sensing solutions including RTD assemblies, thermocouple assemblies, and associated components for industrial temperature measurement in extreme and hazardous-location environments.
• RTD Assemblies Resistance Temperature Detector assemblies for accurate industrial temperature measurement, available with various termination styles and mounting configurations.
• Thermocouple Assemblies - High Temperature High temperature thermocouple assemblies designed for extreme temperature environments in industrial processes such as furnaces, turbines, and combustion monitoring.
• Transmitters/Controllers Temperature transmitters and controllers including terminal head mount models, DIN rail mount models, and programmable LED controllers for converting and processing temperature sensor signals.
• Temperature Sensors - Semiconductor Specialized temperature sensors for semiconductor manufacturing including epitaxial sensors (with optional EtchDefender™ coating), profile and spike sensors, lithography tool wafer temperature monitoring, and calibration thermocouples for HAST chambers.
• Thermowells Protective thermowells used during temperature sensor installation to isolate the sensor from the process environment while maintaining measurement accuracy in industrial applications.
• Termination Styles Various termination options for temperature sensors including stripped lead, compact connection heads, conduit boxes, fiberglass insulated leads, and flip top hinged enclosures.
• Cables and Harness Assemblies Custom-designed cable and harness assemblies for aerospace engine, power generation turbine, and semiconductor applications, leveraging mineral insulated cable technology and NADCAP-certified manufacturing.
• Mineral Insulated Cable (Con-O-Clad™) Mineral insulated cable products including Con-O-Clad™ bulk thermocouple wire for temperature sensing applications requiring robust, hermetically sealed and protected wiring.
• Engineering, Calibration, and Precious Metals Reclamation Services Custom engineering design assistance, prototyping, ISO/IEC 17025:2017 accredited calibration, and precious metals reclamation programs for thermocouples, provided alongside product sales to industrial customers.

Quantifiable outcome

• Up to 3x longer sensor life in epitaxial reactors with EtchDefender™ coating
• +2 more outcomes

Segments7 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Thermo Electric Company: Long-established U.S. manufacturer of thermocouples, RTDs, thermowells and wire for industrial process measurement — closely comparable to Conax in product mix, customer applications and custom-engineered service offering.
• Swagelok Company: Global manufacturer of fluid system components including fittings, valves, and feedthroughs — overlaps with Conax in compression seal fittings and custom feedthroughs used in instrumentation and process sealing.
• Watlow Electric Manufacturing Company: Designer and manufacturer of industrial heaters, temperature sensors, and process controllers, including mineral-insulated thermocouples and RTDs comparable to Conax's offerings, with overlapping aerospace, semi and process-industry customers.
• Pyromation: Manufacturer of temperature sensors, thermocouples and RTD assemblies serving plastics, metals, power and aerospace — directly comparable to Conax's temperature-sensor and mineral-insulated cable product lines.
• Ashcroft: Specializes in pressure and temperature instrumentation including thermowells, RTDs and seal/fitting accessories — competes with Conax on temperature assemblies and on compression-style sealing used in process industries.
• WIKA Instrument, LP: U.S. arm of WIKA Alexander Wiegand, a global leader in industrial pressure, temperature, level, and force measurement — directly competes with Conax in thermocouples, RTDs, and compression seal fittings across the same aerospace, power and process end markets.

Broad incumbents

• Sensata Technologies: Diversified sensor manufacturer serving aerospace, industrial and heavy-vehicle markets with pressure, position and temperature sensing — overlapping with Conax's sensor business as part of a much wider portfolio.
• Endress+Hauser: Global process-automation leader with extensive temperature, pressure and analytics instrumentation portfolio — overlapping with Conax in industrial temperature measurement but addressing a much broader application footprint.
• nVent Electric: Provides electrical connection and protection solutions including thermal management and sensing accessories for industrial customers — adjacent to Conax's harness-assembly and temperature-sensor business.

Emerging players

• Reotemp Instrument Corporation: Smaller specialty manufacturer of temperature and pressure instrumentation including thermocouples, RTDs and thermowells — competes in similar niche industrial applications with overlapping semiconductor and process-industry customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/conaxmfg
• YouTubeyoutube.com/channel/UCAEfD5SYwuxiPehdwCUR58w
• Facebookfacebook.com/conax-technologies-1703012790016276
• LinkedInlinkedin.com/company/conax-technologies
• Instagraminstagram.com/conax.technologies/?igsh=MXRnZjJ0MXpjeHAycw%3D%3D

Compliance14 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 Conax Technologies