Metal-Flex Welded Bellows
Metal-Flex Welded Bellows, founded in 1981, designs and manufactures edge welded bellows (0.200" to 14.000" O.D.) in-house for aerospace, semiconductor, nuclear, cryogenic, chemical, and petrochemical industries from two facilities in Vermont and Nevada.
- Company typePrivate
- Founded1981
- HeadquartersNewport, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Metal-Flex Welded Bellows does
Metal-Flex Welded Bellows, Inc. is a privately-held specialty precision manufacturer founded in 1981 by Barrie W. Hume in Derby, Vermont, now headquartered in Newport, Vermont. The company designs, manufactures, and tests edge welded bellows entirely in-house, producing assemblies from 0.200 inch inside diameter through 14.000 inch outside diameter, with welded assembly lengths exceeding 15 feet. Its products serve as flexible sealing and pressure/vacuum compensation components in valves, seals, expansion joints, accumulators, vibration isolators, vacuum couplings, and related applications for the aerospace/aircraft, semiconductor (including Ultra-High Vacuum), nuclear, cryogenic, chemical, and petrochemical industries, with the company claiming worldwide reach.
Manufacturing is built around Plasma and TIG welding of diaphragm stacks, in-house custom stamping die creation for non-standard sizes, chill-ring-assisted weld bead formation, and a full on-site machine shop producing custom flanges and adapting catalog flanges. Quality control comprises inspection, leak testing, and welder certification through scheduled weld-bead analysis, all housed in a recently added in-house lab facility. The company holds ISO 9001 certification (since February 1996, with the current certificate valid through March 2029), ITAR registration (valid through 2026), and HUBZone Small Business designation. It operates two facilities totaling more than 30,000 square feet in Newport, Vermont and Sparks, Nevada, with 11-50 employees, of whom more than a dozen have tenures exceeding 20 years.
Revenue is generated through three streams: sale of edge welded bellows (both catalog sizes and custom-manufactured units), custom flange manufacturing, and a rebuild/repair service that re-uses customer end flanges to limit downtime. Pricing is not publicly disclosed; all commercial engagement runs through direct quote requests handled by a named sales and design team (General Manager - Sales; Sales - Design; Design Engineer / QA Manager). Distribution is direct-to-customer from company facilities with no resellers or distributors, and the go-to-market is engineering-led, targeting demanding applications in regulated and high-specification industrial end-markets.
Metal-Flex Welded Bellows firmographics
Firmographics- Name
- Metal-Flex Welded Bellows
- Legal name
- Metal Flex Welded Bellows, Inc.
- Website
- https://metalflexbellows.com
- Company type
- Private
- Founded year
- 1981
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Metal-Flex Welded Bellows, founded in 1981, designs and manufactures edge welded bellows (0.200" to 14.000" O.D.) in-house for aerospace, semiconductor, nuclear, cryogenic, chemical, and petrochemical industries from two facilities in Vermont and Nevada.
- Ownership category
- akta.pro rank
Metal-Flex Welded Bellows industry classification
Industry- Product category
- Precision Metal Bellows and Custom Flange Manufacturing
- NAICS
- Rolling and Drawing of Purchased Steel (33122)
- SIC
- Fabricated Plate Work (Boiler Shops) (3443), Sheet Metal Work (3444)
- akta.pro primary industry
- Steel Plate, Sections & Welded Assemblies (IMADACAD)
- akta.pro secondary industries
- Welding, Joining & Soldering Equipment (Arc, Resistance, Friction, Brazing) (IMAHADAH), Metal Forming & Fabrication Machines (Presses, Bending, Shearing, Stamping) (IMAHADAC)
Keywords
Where Metal-Flex Welded Bellows is headquartered
LocationHeadquarters
- HQ city
- Newport
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Metal-Flex Welded Bellows business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Personnel, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Edge Welded Bellows Products: Metal-Flex generates revenue through the manufacture and sale of edge welded bellows products in various sizes (0.200" I.D. through 14.000" O.D.). Products are used in valves and seals for pressure and vacuum applications across multiple industries. The company offers both catalog standard sizes and custom-manufactured bellows to customer specifications.
- Custom Flange Manufacturing: Revenue is generated from in-house machine shop services that produce custom flanges as well as adapt standard catalog flanges. This accompanies bellows core sales as part of complete assembly orders.
- Bellows Repair and Rebuild Services: The company offers bellows rebuild/repair services with quick turnaround, allowing customers to save time and money by re-using end flanges from damaged bellows.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Metal-Flex Welded Bellows product offering
Product offeringCore offering
Metal-Flex Welded Bellows designs and manufactures precision edge welded bellows from 0.200" I.D. through 14.000" O.D., with welded assemblies exceeding 15 feet in length. The company performs all design, manufacturing, testing, and custom flange fabrication in-house using Plasma and TIG welding, and also offers quick-turnaround bellows rebuild and repair services for industrial, aerospace, semiconductor, nuclear, cryogenic, chemical, and petrochemical customers.
Product overview
Metal-Flex Welded Bellows manufactures edge-welded bellows products for industrial applications. Their core product line consists of edge welded bellows available in sizes from 0.200" I.D. through 14.000" O.D. with assembly lengths exceeding 15 feet, complemented by custom flanges manufactured in their in-house machine shop. They also offer bellows rebuild/repair services. These products serve critical functions in valves and seals for pressure and vacuum applications across semiconductor, aerospace, aerospace/aircraft, Ultra-High Vacuum (UHV), nuclear, cryogenic, chemical, and petrochemical industries. Their applications include Volume Compensation, Expansion Joints, Accumulators, Vibration Isolators, Vacuum Valve Seals, Pressure Sensors, Flexible Vacuum Ducting, Linear Shaft Seals, Rotary & Stationary Shaft Seals, Flexible Vacuum Couplings, Aneroids, Manipulators, and Feed-Thrus.
Differentiator
Problem solved
Functional benefit
Products and services
- Edge Welded Bellows Precision edge welded bellows manufactured from 0.200" I.D. through 14.000" O.D., with assembly lengths exceeding 15 feet, designed for valves and seals in pressure and vacuum applications across aerospace, nuclear, semiconductor, cryogenic, chemical, and petrochemical industries.
- Custom Flanges Custom-manufactured end flanges and hardware fabricated in-house through Metal-Flex's full machine shop, used to interface bellows cores with various equipment types; the company can also adapt standard catalog flanges to customer needs.
- Bellows Rebuild and Repair Services Specialized repair and rebuilding services for damaged bellows with quick turnaround, allowing customers to reuse end flanges from damaged assemblies to save time and money and limit equipment downtime.
Quantifiable outcome
- Welded assemblies with lengths exceeding 15 feet
- +2 more outcomes
Companies that use Metal-Flex Welded Bellows
Customer profileSegments6 records
Ideal customer profiles1 record
Metal-Flex Welded Bellows technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Metal-Flex Welded Bellows partnerships and signals
Strategic signalScale indicators7 records
Recent moves8 records
Expansion highlights5 records
Metal-Flex Welded Bellows competitors and assessment
Company assessmentDirect peers
- Hydro Fitting Manufacturing: Manufactures custom metal bellows, expansion joints, and flexible piping for aerospace, defense, and industrial customers — directly comparable in custom welded bellows and niche industrial segments.
- BOA Group (formerly Bellows & O Rings): Engineered metal bellows and sealing solutions manufacturer serving aerospace, defense, and industrial markets — closely comparable in precision welded bellows, materials, and customer base.
- MTI (Metal Technology of Indiana): Custom metal bellows and precision welding for aerospace, semiconductor, and industrial vacuum applications — directly comparable in TIG/plasma welded bellows expertise.
- Dynatect (formerly A&A Manufacturing): Manufactures protective bellows and way covers for industrial machinery and automation — overlapping with Metal-Flex in metal bellows technology and industrial customer base, though typically serving different application contexts.
- Flexicraft Industries: Manufactures flexible piping solutions, expansion joints, and metal bellows for industrial and process applications — directly comparable in custom engineered metal bellows and similar industries served.
- Senior Aerospace Metal Bellows (formerly BellowsTech): A long-established welded metal bellows manufacturer serving aerospace, semiconductor, and industrial markets with overlapping product specifications (edge welded, hydroformed, and formed bellows). Directly competes with Metal-Flex in custom precision bellows.
- Welded Bellows, Inc. A direct competitor specializing in edge-welded metal bellows for similar industries including aerospace, defense, semiconductor, and vacuum. Comparable size, product range, and custom engineering focus.
- Aegis Technology: Specializes in precision metal bellows for semiconductor, vacuum, and aerospace applications — closely comparable in UHV bellows and small-batch custom engineering.
Broad incumbents
- Kaman Aerospace Corporation: Larger aerospace components manufacturer with a precision products division that includes bellows and sealing components — broader aerospace incumbent that competes for similar programs but operates at much greater scale.
- Eagle Stainless Tube & Fabrication: Broader fabricator of stainless steel tubing and components with overlap in custom metal fabrication serving semiconductor, pharmaceutical, and industrial customers — broader portfolio than Metal-Flex but comparable custom-engineering culture.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Metal-Flex Welded Bellows social profiles
Digital presenceMetal-Flex Welded Bellows compliance and trust
Trust signalCompliance2 records
Metal-Flex Welded Bellows financial estimates
Financial estimateRevenue estimate
Valuation estimate
Metal-Flex Welded Bellows leadership team
Management profileNumber of profiles
Profiles6 records
Metal-Flex Welded Bellows funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Metal-Flex Welded Bellows M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Metal-Flex Welded Bellows
What does Metal-Flex Welded Bellows do?
Metal-Flex Welded Bellows designs and manufactures precision edge welded bellows from 0.200" I.D. through 14.000" O.D., with welded assemblies exceeding 15 feet in length. The company performs all design, manufacturing, testing, and custom flange fabrication in-house using Plasma and TIG welding, and also offers quick-turnaround bellows rebuild and repair services for industrial, aerospace, semiconductor, nuclear, cryogenic, chemical, and petrochemical customers.
Is Metal-Flex Welded Bellows a public or private company?
Metal-Flex Welded Bellows is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Metal-Flex Welded Bellows founded?
Metal-Flex Welded Bellows was founded in 1981. It employs 11 to 50 people.
Where is Metal-Flex Welded Bellows based?
Metal-Flex Welded Bellows is headquartered in Newport, United States, in the North America region.
How does Metal-Flex Welded Bellows make money?
Three revenue lines are on record. Edge Welded Bellows Products are the primary driver. The others are custom Flange Manufacturing and bellows Repair and Rebuild Services.
Who are Metal-Flex Welded Bellows's main competitors?
Direct peers on record are Hydro Fitting Manufacturing, BOA Group (formerly Bellows & O Rings), MTI (Metal Technology of Indiana), Dynatect (formerly A&A Manufacturing), Flexicraft Industries, Senior Aerospace Metal Bellows (formerly BellowsTech), Welded Bellows, Inc. and Aegis Technology. Broad incumbents are Kaman Aerospace Corporation and Eagle Stainless Tube & Fabrication.
Does Metal-Flex Welded Bellows have an API?
No public API is recorded for Metal-Flex Welded Bellows.
What industry is Metal-Flex Welded Bellows in?
Metal-Flex Welded Bellows's product category is Precision Metal Bellows and Custom Flange Manufacturing. Its primary akta.pro industry code is IMADACAD, Steel Plate, Sections & Welded Assemblies, with a secondary code of IMAHADAH, Welding, Joining & Soldering Equipment (Arc, Resistance, Friction, Brazing). Its NAICS code is 33122 and its SIC code is 3443.