Helicoflex texturised seal comparison

Helicoflex Texeal Brochure

Helicoflex Texeal Brochure

Push to Green Hydrogen Generation

Hydrogen: Push Towards the Generation of Green H2

The desire to move to sustainable energy sources and reduce carbon emissions is growing exponentially. Low-cost renewable energy sources (e.g., solar, wind, hydro) are being developed and deployed worldwide.

Green Hydrogen lifecycle

Hydrogen Production: The Challenges and Practical Applications

As the world shifts its focus to decarbonization initiatives, research shows responsible leaders will pour more technology and infrastructure into the hydrogen production economy to provide clean, carbon-free energy storage.


Non-Contacting Lift-Off Seal

Non-Contacting Lift-Off Seal

Design process goes above and beyond

Design Process That Goes Above and Beyond

Design Process That Goes Above and Beyond

Qualiseal wins over customers with custom design, verification, and field testing. In-house lab testing shortens the validation process by a factor of years. A rigorous design and review process provides customers with peace of mind. The team maintains the relationship with superior customer service.

An Aerospace Spin on Non-contacting Seal Technology

Non-Contacting Sealing Technology Reduces Wear, Heat, Increases Life Expectancy
Design features in the face of the mating ring force fluid (air, gas) into a converging gap in the sealing face. As the pressure builds, the faces separate.

How Metal Seals Work Infographic

How a Metal Seal Works

How a Metal Seal Works

HELICOFLEX® Spring Energized Seal

HELICOFLEX® Resilient Metal Seal

HELICOFLEX® Resilient Metal Seal

The HELICOFLEX® seal is a high performance, flexible metal seal that has exceptional compression and elastic recovery properties. This seal is composed of a close wound helical spring surrounded by one or more metal jackets. The spring is designed to have a specific compression resistance. During compression, the resulting specific pressure forces the jacket to yield and fill the flange imperfections while ensuring positive contact with the flange sealing faces. Each coil of the helical spring acts independently and allows the seal to conform to surface irregularities on the flange surface.

HELICOFLEX® design flexibility allows Technetics engineers to customize the seal characteristics to match each unique application.

Features & Benefits

  • Highest sealing level performance on the market, depending on the sealing load, the surface finish, and the surface treatment
  • Excellent corrosion resistance
  • Wide range of materials: from standard to specific and/or rare
  • Special materials on demand for coatings: wide range of materials available, from standard to specific and/or rare (see details below in “Specifications” section)
  • Extended lifetime and more
  • Excellent radiation resistance
  • Compatible with NACE MR 0175
  • Ø 4 to 8000 mm
  • Ø 1,5 to 40 mm cross-section
  • Adaptable to all types of sealing surfaces (triple faces, radial, shaped, and more)
  • Adaptable to all standards flanges (PNEUROP, ANSI, ISO, and more)

Product Applications

  • Nuclear: reactor pressure vessels, control rods, primary pumps, pressurizers, spent fuel casks, transportation casks
  • Hydrogen: Solid oxide fuel cells, High-temperature electrolysis, High-temperature water stream electrolysis, Proton exchange membrane fuel cells
  • Life sciences: imaging & scanning systems
  • Semiconductor chamber, exhaust and other applications in PVD/CVD/etch and lithography processes
  • Automotive: engine, exhaust gas
  • Oil and gas: hydraulics, subsea couplings, subsea Christmas trees, subsea compressors, electronic submersible pumps, flow meters
  • Valves: body/bonnet sealing, seat sealing
  • Ultra-high vacuum: accelerators & fusion research
  • Gas/chemical delivery systems


Have questions? A Technetics Group product specialist will get back to you to shortly.


TemperaturePressureLeak rateSealing Lining CoatingSpring
from -272˚ up to 800˚C
(from -457˚F to 1472˚F)
from 10-10 mbar up to 3000 bar
(from 1E-12 psi to 43.511 psi)
Sealing level from bubble tightness down to 10-12 Pa.m3.s-1Aluminum
Pure Iron
Soft Steel
Stainless Steel (304L – 316L – 321 – 316Ti)
Inconel (600 – 625 – 718 – 750)
Nimonic 90
Alloy 718
Alloy 750
SS – XC80