Solid Sealing Technology

What Solid Sealing Technology does

Solid Sealing Technology (SST) is a U.S.-based designer and manufacturer of high-reliability ceramic-to-metal and glass-ceramic hermetic feedthroughs and connectors, founded in 2004 and headquartered in Watervliet, New York. The company's core technology bonds ceramics and glass to metal through specialized metalizing and brazing processes to produce vacuum-tight electrical and optical feedthroughs, viewports, isolators, pinch-off tubes, plugs, and accessories that operate across extreme conditions (-269°C to 450°C, voltages exceeding 125 KV, currents up to 1000 amps, ultra-high vacuum, high pressures, and nonmagnetic material requirements). SST serves industrial and research equipment manufacturers, medical device makers (MRI machines), aerospace and defense programs (including the NASA Mars Insight Mission), and scientific facilities (particle accelerators), with ISO9001 certification and ITAR registration supporting defense and space-grade qualification.

SST operates a hybrid business model combining a catalog of standard components sold at unit prices ranging from roughly $8 for small accessories to $2,422 for premium specialty viewports with a custom-engineering arm that designs fully bespoke hermetic solutions priced on a quote basis. The company goes to market through direct enterprise sales (phone +1 518-874-3600 and online quote requests), a website catalog with 3D model viewing and search, and an authorized distributor network spanning global regions. Customers include NASA, MRI manufacturers, particle accelerator facilities, and energy storage system builders, reflecting a diversified but technically demanding industrial base.

SST is a privately held subsidiary of HEICO Corporation (NYSE: HEI), a diversified aerospace and defense conglomerate, which provides financial backing and organizational resources. No external funding rounds, headcount figures, or revenue disclosures are publicly available, and there is no evidence of AI/ML capabilities within the product or operating model. Strategic emphasis is on deep materials-science specialization, customization, and credentialed quality rather than scale or digital transformation.

Name

Solid Sealing Technology

Legal name

Solid Sealing Technology

Website

http://www.solidsealing.com

Company type

Private

Founded year

2004

Operating status

Operating

Short description

Solid Sealing Technology (SST) designs and manufactures ceramic-to-metal and glass-ceramic hermetic feedthroughs, connectors, and viewports for vacuum environments in industrial, medical, scientific research, and aerospace/defense applications. Founded in 2004 and based in Watervliet, NY, it operates as a subsidiary of HEICO Corporation.

Ownership category

akta.pro rank

Product category

Hermetic Sealing Components

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

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

• Ceramic-to-metal sealing
• Vacuum feedthroughs
• Hermetic connectors
• Vacuum components
• Custom hermetic design

Headquarters

HQ city

Watervliet

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, Marketing or Sales

Revenue model

1. Vacuum Feedthroughs and Hermetic Connectors: Sale of standard and custom vacuum feedthroughs and hermetic connectors designed for vacuum environments in industrial, medical, and research applications
2. Custom Feedthrough Design and Manufacturing: Custom engineering and manufacturing services for bespoke hermetic sealing solutions ranging from small modifications to fully custom designs
3. Vacuum Accessories and Hardware: Sale of ancillary products including ceramic components, flanges, backshells, bolts, USB adapters, and other vacuum system accessories
4. Viewports and Optical Components: Specialized viewports with various window materials (CaF2, MgF2, Sapphire, ZnSe, Kodial Glass) for vacuum chamber observation applications

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Solid Sealing Technology designs and manufactures high-reliability ceramic-to-metal vacuum feedthroughs, hermetic connectors, and supporting vacuum accessories (viewports, plugs, hardware, pinch-off tubes, isolators, fiber optic connectors). The company sells both standard catalog components and fully custom engineered feedthroughs for industrial, medical, aerospace/defense, and scientific research applications that operate under extreme vacuum, temperature, voltage, and pressure conditions.

Product overview

Solid Sealing Technology (SST) offers a comprehensive portfolio of vacuum feedthrough and hermetic sealing solutions built around ceramic-to-metal and glass-ceramic sealing technologies. The core product line centers on vacuum feedthroughs and hermetic connectors that enable electrical power, signals, and media transmission through vacuum chamber walls. Supporting the core feedthroughs, SST provides a broad catalog of accessories including plugs and connectors (thermocouple, circular, Sub D, fiber optic), viewports with various optical materials (Sapphire, CaF2, MgF2, ZnSe, Kodial Glass), copper pinch-off tubes, and hardware components. The company differentiates through extensive customization capabilities, offering fully custom feedthrough designs accommodating extreme conditions (temperatures from -269°C to 450°C, voltages exceeding 125 KV, currents up to 1000 amps). All products are manufactured in the USA with ISO9001 certification and ITAR compliance.

Differentiator

Problem solved

Functional benefit

Products and services

• Vacuum Feedthroughs Electrical feedthrough components that transmit power, signals, and media through vacuum chamber walls while maintaining hermetic seals; designed for ultra-high vacuum environments across temperatures from -269°C to 450°C. Sold to industrial, medical, and research equipment manufacturers.
• Hermetic Connectors Electrical connectors providing airtight seals for vacuum applications, enabling signal and power transmission between vacuum and atmospheric environments. Sold to equipment manufacturers requiring reliable hermetic interfaces.
• Custom Feedthrough Design and Manufacturing Bespoke feedthrough engineering and manufacturing service accommodating voltages exceeding 125 KV, currents up to 1,000 amps, nonmagnetic materials, ultra-high vacuum, extreme temperatures, and high pressures. Built in close collaboration with customer engineering teams.
• Isolators Electrical isolators for vacuum applications providing signal isolation and protection in vacuum system setups.
• Pinch-off Tubes Copper pinch-off tubes in diameters from 0.062 to 0.750 inches and various lengths for vacuum system maintenance and component isolation.
• Viewports Optical viewports with window materials including Sapphire, CaF2, MgF2, ZnSe, and Kodial Glass for observation and laser access in vacuum chambers; premium materials priced up to $2,422 per unit.
• Plugs & Accessories Vacuum-side and air-side plugs including thermocouple plugs, circular connectors, Sub D connectors, and related accessories supporting voltages from 250V to 25kV.
• Fiber Optic Connectors ST-type vacuum-compatible fiber optic connectors and cable assemblies for single-mode and multi-mode fiber optic signal transmission through vacuum barriers.
• Hardware Supporting hardware including backshells, bolts, ceramic components, flanges, USB adapters, and related items for vacuum feedthrough systems.

Quantifiable outcome

• Extreme temperature range from -269°C to 450°C supported
• +3 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• NASA (Mars Insight Mission)flagshipStrategic or Co-development PartnerSST supplied custom vacuum feedthrough components for NASA's Mars InSight Mission, demonstrating space-grade quality and reliability standards. This partnership serves as a premier credential for the company's engineering and manufacturing capabilities.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Douglas Electrical Components: Douglas Electrical Components manufactures hermetic feedthroughs, connectors, and custom sealing solutions for vacuum and harsh-environment applications — directly overlapping SST's core product lines of hermetic feedthroughs and ceramic-to-metal seals.
• Conax Technologies: Conax Technologies designs and manufactures hermetic feedthroughs, seal glands, and compression seal fittings used in vacuum, pressure, and temperature-critical instrumentation — closely comparable to SST's hermetic sealing portfolio.
• MDC Vacuum Products: MDC Vacuum Products supplies vacuum components including electrical feedthroughs, viewports, flanges, and fittings — directly comparable to SST's catalog of vacuum feedthroughs, viewports, and accessories.
• Huntington Mechanical Laboratories: Huntington Mechanical Laboratories manufactures vacuum components, electrical feedthroughs, and custom vacuum chambers — overlapping with SST's feedthrough and vacuum accessory offerings for research and industrial customers.
• Kurt J. Lesker Company: Kurt J. Lesker Company is a global supplier of vacuum components, feedthroughs, viewports, and related hardware for research and industrial vacuum systems — directly comparable to SST's standard catalog of vacuum accessories and feedthroughs.
• VACOM Industrie- und Feinmechanik: VACOM manufactures ultra-high vacuum components, CF flanges, viewports, and feedthroughs serving research and semiconductor applications — comparable to SST's ultra-high-vacuum feedthroughs and accessory portfolio.

Broad incumbents

• Pfeiffer Vacuum: Pfeiffer Vacuum is a major global manufacturer of vacuum pumps, components, and feedthroughs serving semiconductor, analytics, and research markets — a much larger incumbent with overlapping but broader vacuum-component capabilities versus SST's specialized sealing focus.
• CeramTec: CeramTec is a large manufacturer of technical ceramics, ceramic-to-metal seals, and hermetic components used in medical, electronics, and vacuum applications — overlapping with SST's core ceramic-to-metal sealing technology but at much greater scale and breadth.
• SCHOTT AG: SCHOTT produces specialty glass, glass-ceramic, and glass-to-metal sealing solutions used in hermetic feedthroughs and electronic packaging — directly comparable to SST's glass-ceramic sealing capability, but at global conglomerate scale.
• Kyocera: Kyocera manufactures advanced ceramics and ceramic-to-metal sealing components for semiconductor, aerospace, and medical applications — broadly comparable to SST in underlying ceramic sealing technology but serving a far larger and more diversified set of end markets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks1 record

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/solid-sealing-technology

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 Solid Sealing Technology