Flexible Metal Hose

Unisource Manufacturing is among the nation’s leading flexible metal hose manufacturers with over 25 years of experience in the manufacture of metal hose products. We bring solid product and application experience to the table while offering a complete line of braided corrugated metal hose that is designed to cover nearly any application


Metal hose assemblies are often used where rubber, plastic, PTFE, or other types of hose ducts are unsuitable. Reinforced corrugated metal hose provides for the transfer of liquids or gases, and is engineered to handle extreme temperature and pressure. Metal hose may be appropriate where other types of hoses are not, such as the transfer of extremely high temperature liquids or gases or transferring extremely cold (cryogenic) liquids.


UNISOURCE is committed to serving our customers with the largest selection of hoses and materials in the corrugated metal hose industry. Whether we are designing specialty hose assemblies for OEM applications or supporting our network of distributors, UNISOURCE has the dedication and resources to meet the needs of today’s industrial requirements. Our goal is to provide exceptional customer service, quality engineered products and on-time delivery.


Every single UNISOURCE corrugated metal hose assembly is tested for leak integrity. We can offer a variety of other types of testing, with corresponding certifications provided. These tests and certifications include:

  • Pressure testing – Hose assemblies are pressurized pneumatically or hydrostatically to ensure that the hose assemblies do not leak prior to shipping from the factory. The hoses are tested per CGA and NAHAD standards depending on the application. UNISOURCE has the ability to cycle test hose assemblies up to 50,000 psi.
  • Mass Spectrometer – UNISOURCE has the ability to test hose assemblies using a mass spectrometer to indicate possible leaks when the hoses are to be used for transferring small molecule, high permeation gases.
  • Destructive testing – Hose assemblies are pressurized to burst pressures to ensure that the hose meets the published levels.
  • Material Test Reports – UNISOURCE can provide the Material Test Reports for the materials used in the hose manufacturing process upon request. The requirement for the Material Test Reports needs to be indicated at the time of order placement.
  • Certificate of Conformance – A UNISOURCE document that verifies the hose has been manufactured per applicable standards. The requirement for the Certificate of Conformance needs to be indicated at the time of order placement.


UNISOURCE is committed to enhancing the quality of every product we manufacture through continual process improvements. The UNISOURCE Quality Team critically evaluates every stage of production, testing and packaging. Our goal is to deliver a product that exceeds our customers’ expectations.


Superflex Stainless Steel Hose

Unisource Superflex is the workhorse of the metal hose industry. The perfect combination of performance and price, Superflex is our most popular metal hose product.

Constructed with a mechanically formed annular inner hose made of either Type 321* or Type 316 stainless steel. Superflex is our standard pitch design, providing strength and flexibility. Available with either a single braid or for even higher pressures–a double braided exterior. Larger sizes will utilize a braided braid. Sizes range from 1/4” to 14”. Size 16” is available on special request.

  • Stainless steel hose and braid
  • Annual corrugations
  • Standard pitch
  • Available with a wide choice of welded end-fittings

Superflex HD Stainless Steel Hose

Unisource Superflex HD is the flexible metal hose choice when an extra high-pressure hose is needed. Superflex HD consists of a heavy wall, mechanically formed, annular close-pitch hose to provide higher pressure ratings. Material can be either Type 321 or Type 316L stainless steel.

Choose either single braid or double braid reinforcement. Braiding is made with Type 304L stainless.

Sizes range from 1/2” to 6”.

  • Stainless steel heavy-wall hose, and stainless steel braided reinforcement.
  • Very high-pressure ratings
  • Annual corrugations
  • Close pitch
  • Available with a wide choice of welded end-fittings

Ultraflex Stainless Steel Corrugated Hose – ISO 10380

Ultraflex is the most flexible hose available anywhere. The unique hydroformed annular hose construction provides unequaled cycle life. Ultraflex is ISO 10380 certified—far surpassing international standards for cycle life and reliability. Available in Type 321 or 316 stainless steel. Available in bulk or in assemblies complete with end connections. Rated for moderate pressures and extreme flexing. Ideal for high temperature internal or external conditions. High working pressures, even at extended temperatures. Available with a variety of end connections.

Braiding is made with Type 304L stainless.

Sizes range from 1/2” to 6”.

  • Stainless steel heavy-wall hose, and stainless steel braided reinforcement.
  • Extremely high cycle-life and highly flexible
  • Hydro-formed annual corrugations
  • Close pitch
  • Available with a wide choice of welded end-fittings

“Bronzeflex” Bronze Corrugated Hose

Bronzeflex is a mechanically formed standard pitch corrugated hose constructed using bronze hose and bronze braid. This hose is ideal for applications involving the use of copper piping. Bronzeflex is typically used in water lines and refrigeration applications. It is stocked in sizes ranging from 1⁄4” to 4” diameters. Single or double braid reinforcement can be supplied in all sizes

Sizes range from 1/4” to 4”.

  • Bronze standard wall hose, and bronze braided reinforcement.
  • Ideal choice for copper piping
  • Mechanically formed annual corrugations
  • Standard pitch
  • Available with a wide choice of permanently attached end fittings


Armorflex Strip-Wound Hose

The Unisource line of strip-wound or interlocked hose is available in most stainless steel alloys, aluminum, bronze, brass, aluminized, galvanized, and tin plate. Various packings are available to withstand pressure and temperature extremes. Individual styles for armor casing, material handling, exhaust, or hose lining applications. A complete assortment of fittings, flanges, and couplers are also available.

Special Hose Assembly Fabrication

Jacketed Assembly

Jacketed assemblies are normally used in one of the following applications:

  • As a heated transfer line for those products, such as sulfur, which must be maintained at an elevated temperature in order to flow readily. Steam or hot oil is circulated through the jacket, which in turn heats the product being conveyed in the core hose.
  • As a cryogenic transfer line. Maintaining a high vacuum in the jacket effectively insulates cryogenic liquids being conveyed in the core hose.

Traced Assembly

Traced hose assemblies are used when the product being conveyed must be heated in order to flow freely. Steam or hot oil circulated through the inner tracer hose heats the product in order to maintain the correct temperature.

Lined Assembly

Product being conveyed through an unlined corrugated metal hose at high velocity can set up resonant vibration within the hose causing it to prematurely fail. This may be eliminated by adding a liner to the hose.

Guarded Assembly

Guarded assemblies are used when a corrugated metal hose could easily be damaged by rough handling, abrasion, or flexing past its minimum bend radius.

Fire Jacket

Fire jackets are used in applications where hot media is being conveyed through the hose and a possibility of skin contact exists. They can also be used to insulate the media being conveyed from either high or low ambient temperatures that can have a negative effect on the product or its flow through the hose.

Spring Guard

Spring guards can be installed on hoses without armor in situations when there is a significant risk of damage to hose in service. Spring guards consist of a metal spring that is attached behind the fitting.


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