For more than a half-century Hyspan has provided advanced motion solutions for Defense vehicles. Land, surface, subsurface, air, and space equipment are supported. Motions can be from thermal, vibration, shock, and hull flex. Solutions include metal bellows, metal hoses, fabric bellows, laminated (multiply) materials, stainless steels, nickel alloys, special liners, engineered flanges, insulations, and other technologies.

We provide engineering, manufacturing, and testing capabilities. Research & development, specialty testing, in-service inspection, installation inspection, replacement manufacturing, and reverse engineering  are also available. Products may support MIL-S-901 Shock, NAVSEA Welding, or other unique requirements.

Hyspan has an extensive Defense history with more than 1,000 National Stock Numbers (NSNs). Our heritage brands include:

  • American BOA Expansion Joints & Hoses
  • Anaconda Expansion Joints & Hoses
  • Barco Ball Joints & Venturis
  • Flexible Metal Hose Expansion Joints & Hoses
  • Hyspan Precision Products Expansion Joints & Hoses

Hyspan is an ISO 9001:2015 registered company with a quality system that supports requirements of various pipe and boiler pressure vessel codes. These include ASME B31.1, ASME B31.3, and ASME Section VIII Division 1.

Nondestructive testing and inspections are performed by company personnel including radiography. Quality personnel are certified to the standards of the American Society of Nondestructive Testing (ASNT). Hyspan is a member of the Expansion Joint Manufacturers Association (EJMA ®). A copy of our Hyspan EJMA ® certificate is available.

Gas Turbine Recuperator Ducting, alloy 625 Construction
Gas Turbine Recuperator Ducting, alloy 625 Construction
Mockup and Test Setup of Exhaust Ducts (from Boeing 747) of Chemical Oxygen Iodine Laser
Mockup and Test Setup of Exhaust Ducts (from Boeing 747) of Chemical Oxygen Iodine Laser
Gas Turbine Bleed Air Manifold
Gas Turbine Bleed Air Manifold


Series 1500 Hyflex Bellows Expansion Joints

Series 1500 Hyflex Bellows Expansion Joints tbkg 2in

1507-1510 Hyflex Single Bellows Exp Joint
1511-1512 Hyflex Uni Bellows Exp Joints
1511IS Inline Seismic Uni Bellows Exp Joints
1507HG-1510HG Hyflex Single Hinge/ Gimbal Bellows
Exp Joints

Series 2500 Low Pressure Round & Rectangular Bellows Expansion Joints

2504-2507 Low Pressure 1 Ply Bellows Joint
2524-2527 Low Pressure 1 Ply All 304/304L Bellows Joint
2534-2537 Low Pressure 1 Ply All 316L Bellows Joint
2509-2511 Low Pressure 3 Ply Bellows Joint
2529-2531 Low Pressure 3 Ply A 304/304L Bellows Joint
2539-2541 Low Pressure 3 Ply All 316L Bellows Joint
2554-2555 HySeal Low Pressure 1 Ply Penetration Seal Bellows Joint
25RECT Low Pressure Rectangle Bellows Expansion Joint

Series 4500 Braided Hose Connectors

4501-4505 Straight Braided Hose Connectors
45V1-45V8 V-Flex Seismic Connector
Anaconda Vibration Eliminators with Copper Ends
Universal Metal Hose Braided Hose, Strip Wound, and Assemblies
Anaconda Metal Hose and Braided Connectors

Series 5500 Laminated Bellows Connectors

5501R-5502R 3 Ply Minimum Length Bellows Connector
5506R 3 Ply Rubber Joint Length Bellows Connector

Series 6500 Perma-Pax Slip Expansion Joints

6501-6506 Packed Slip Single & Dual Expansion Joints

Series 7500 Engineered Bellows

Safety Relief Valve Bellows Seal

Custom Made 1” To 20’ Engineered Bellows Expansion Joint

Anaconda Metal Bellows Expansion Joints

Flexible Metal Bellows Expansion Joints