RdF Corporation

What RdF Corporation does

RdF Corporation is a Hudson, New Hampshire-based manufacturer of temperature and heat-flux sensors founded in 1955. The company produces platinum Resistance Temperature Detectors (RTDs), thermocouples (Types K, E, T, J), Micro-Foil® heat flux sensors, and custom foil heaters, sold through the proprietary brand families STIKON® and STRAPON®. Its products are deployed across aerospace, military, nuclear, OEM, and industrial end markets, with documented applications on "the world's most recognizable air and spacecraft" and in nuclear power plant Class 1E safety-related systems.

The technical core is precision contact temperature sensing: platinum RTD capsules as small as 0.066 inch diameter with 0.4-second water response time, paper-thin (0.0005") Micro-Foil® butt-bonded thermocouple junctions that add no thickness at the junction, and pressure ratings up to 5,000 PSI for cryogenic probes. Operating envelopes span -434°F to 2,100°F (-258°C to 1,148°C) with long-term stability better than ±0.05°C over five years. The company holds ISO 9001:2015, AS9100D Rev D, QPL-24388 (MIL-T-24388), 10 CFR 50 Appendix B / NUPIC / NQA-1, and CSA-Z299.1 certifications, enabling it to bid on shipboard, aerospace, and nuclear-grade programs.

RdF operates a hybrid commercial model: a self-serve e-commerce webstore (ShopRdFCorp.com) for standard SKUs at $75-$500 unit pricing, paired with direct consultative sales for custom configurations, MIL-SPEC assemblies, nuclear-qualified probes, and volume/MIL-W-24270 thermowell orders. Distribution is US-domestic via USPS Priority Mail for webstore orders, with global fulfillment routed through the direct sales channel. Recurring revenue is anchored by long-qualified defense, aerospace, and nuclear programs where switching costs are high; growth levers are incremental catalog additions and adjacent custom-foil-heater sales rather than platform expansion.

Name

RdF Corporation

Legal name

RdF Corporation

Website

https://rdfcorp.com

Company type

Private

Founded year

1955

Operating status

Operating

Headcount range

51–100 employees

Short description

RdF Corporation is a Hudson, NH-based manufacturer of platinum RTDs, thermocouples, and Micro-Foil® heat flux sensors serving aerospace, military, nuclear, OEM, and industrial customers. The firm sells through an e-commerce storefront and direct sales for custom and MIL-SPEC qualified assemblies.

Ownership category

akta.pro rank

Product category

Industrial Temperature Sensors

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Thermistors & Temperature Sensors (NTC/PTC/RTD Elements) (HDAHANAH)

akta.pro secondary industry

Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD)

Keywords

• Industrial temperature sensors
• Platinum resistance thermometers
• Heat flux measurement
• MIL-SPEC aerospace sensors
• Custom foil heaters

Headquarters

HQ city

Hudson

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, Infrastructure, Others

Revenue model

1. Temperature Sensor Products: Sale of standard temperature sensors including RTDs, thermocouples, and heat flux sensors through e-commerce webstore and direct sales. Products range from $75 to $500 for individual units.
2. Custom Sensor Manufacturing: Custom-designed temperature sensors for challenging applications including cryogenic, nuclear, aerospace, and industrial uses. Custom configurations include specialized materials, resistance values, lead lengths, and qualification testing programs.
3. MIL-SPEC and Aerospace Qualified Assemblies: Military-qualified temperature probe assemblies listed on QPL-24388, qualified to MIL-T-24388 with MIL-S-901 shock and MIL-STD-167 vibration testing for shipboard applications.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

RdF Corporation designs and manufactures specialty temperature sensors and heat-flux measurement devices, including platinum Resistance Temperature Detectors (RTDs), thermocouples, and Micro-Foil® heat flux sensors. The company supplies both standard catalog products and custom-engineered MIL-SPEC and nuclear-grade assemblies for aerospace, military, nuclear, OEM, and industrial applications, complemented by custom foil heaters and accessory items such as thermowells, connection heads, and transmitters.

Product overview

RdF Corporation is a temperature sensor manufacturer offering a comprehensive portfolio of platinum RTDs, thermocouples, heat flux sensors, and custom heating solutions. The core product lines include Resistance Temperature Detectors (RTDs) available as surface mount sensors (STIKON®, STRAPON® brands), insertion capsules, probe assemblies (Series 21, 218, 22, 23), and MIL-SPEC qualified assemblies; Thermocouples including surface types (STIKON™ foil and wire thermocouples), probe assemblies (Series 77, 78), and MIL-SPEC versions; and Micro-Foil® Heat Flux Sensors (Models 27170, 27160 array) for precise thermal transfer measurement. Supporting products include custom foil heaters, thermowells, connection heads, and in-head temperature transmitters. The company serves aerospace, military, nuclear, OEM, and industrial applications with products optimized for harsh conditions.

Differentiator

Problem solved

Functional benefit

Brands

• Micro-Foil®: Proprietary thin and flexible heat flux sensor technology with unique iso-thermal properties, used across RdF's heat flux sensor product line.
• STIKON®
• STRAPON®
• STIKON® Wirewound

Products and services

• Platinum Resistance Temperature Detectors (RTDs) Wire-wound and thin-film platinum RTDs and insertion capsules covering cryogenic through high-temperature ranges, with in-house calibration extending useful range down to -434°F (-258°C) and long-term stability better than ±0.05°C over 5 years. Sold to aerospace, nuclear, military, OEM, and industrial customers.
• Thermocouples Bare-foil, laminated (STIKON®), surface, immersion, and fast-response foil thermocouples in standard and custom configurations for surface and immersion temperature measurement. Used in aerospace, defense, industrial, and R&D applications.
• Micro-Foil® Heat Flux Sensors Thin-foil heat flux sensors (including the Micro-Foil® Heat Flux Sensor Array and Dual Function Heat Flux Sensors) with response times as low as 0.13 seconds, used to measure heat transfer rate in aerospace, defense, nuclear, and industrial test applications.
• MIL-SPEC Temperature Probe Assemblies QPL-24388 / MIL-T-24388 qualified platinum RTD probe assemblies and custom military-spec temperature sensors designed for aerospace, weapons, and defense programs. Available in custom probe geometries with documented configuration control.
• Custom Foil Heaters Custom-fabricated thin foil heaters engineered to customer specifications for aerospace, defense, and industrial heating applications, leveraging RdF's thin-foil manufacturing capabilities.
• Thermowells, Connection Heads & Transmitters Accessory hardware sold alongside temperature probes, including thermowells, connection heads, and in-head temperature transmitters used to complete sensor installations in industrial process and OEM applications.

Quantifiable outcome

• Response time as fast as 0.13 seconds for heat flux sensors
• +4 more outcomes

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature6 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Omega Engineering: Specialty manufacturer of temperature, pressure, and process measurement sensors including RTDs, thermocouples, and heat flux instrumentation. Highly comparable product portfolio, distribution model, and target customers (industrial, OEM, aerospace) to RdF.
• Watlow Electric Manufacturing: Designer and manufacturer of thermal solutions including RTDs, thermocouples, heaters, and controllers for industrial, semiconductor, and aerospace applications. Directly overlaps RdF's RTD, thermocouple, and foil heater product lines.
• Pyromation: US-based manufacturer of temperature sensors including RTDs, thermocouples, thermowells, and transmitters for industrial, process, and aerospace applications. Direct peer in product type and target verticals.
• Minco Products: Manufacturer of temperature sensors, heaters, and flexible thermal solutions serving aerospace, medical, industrial, and defense markets. Closely comparable in form factors (flexible/laminated RTDs and heaters) and customer verticals.
• Durex Industries: Manufacturer of electric heaters and temperature sensors including foil heaters, RTDs, and thermocouples for industrial, semiconductor, and aerospace markets. Directly comparable to RdF's custom foil heater and sensor lines.
• WIKA Instrument: Global manufacturer of measurement instruments including temperature sensors (RTDs and thermocouples), thermowells, and process instrumentation. Directly comparable product offering across industrial and process customers.
• Burns Engineering: Specialty manufacturer of precision platinum RTDs and SPRTs used in metrology, aerospace, and laboratory applications. Highly comparable niche positioning in high-accuracy temperature sensing.

Broad incumbents

• Endress+Hauser: Global supplier of process instrumentation including industrial temperature sensors, RTDs, thermocouples, and transmitters. Larger incumbent competing in the same industrial and OEM process-measurement space.
• Honeywell Sensing & Safety: Large industrial conglomerate offering a broad portfolio of temperature, pressure, and position sensors including aerospace-qualified RTDs and thermocouples. Overlaps RdF's MIL-SPEC and aerospace customer base as a much larger incumbent.

Emerging players

• JMS Southeast / Sensor Support Group: Specialty distributor and rebuilder of temperature sensors including RTDs and thermocouples for industrial and OEM applications. Adjacent/emerging player serving overlapping customer accounts with a parts and service model.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance6 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 RdF Corporation