Non-Contacting-Lift-Off-Seal-cross-section

Non-Contacting Lift-Off Seal


Non-Contacting Lift-Off Seal

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
  • Valves: body/bonnet sealing, seat sealing
  • Oil and gas: hydraulics, subsea couplings, subsea Christmas trees, subsea compressors, electronic submersible pumps, flow meters
  • Life sciences: imaging & scanning systems
  • Ultra-high vacuum: accelerators & fusion research
  • Semiconductor chamber, exhaust and other applications in PVD/CVD/etch and lithography processes
  • Gas/chemical delivery systems
  • Automotive: engine, exhaust gas


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


Specifications




Resources

CEFIL’AIR® Inflatable Seals

CEFIL’AIR® Inflatable Seals


CEFIL’AIR® Inflatable Seals


Pneumatic seals offer the easiest, safest and most effective way of sealing parts that move in relation to one another and need to be connected and disconnected. CEFIL’AIR® seals, which are expanded and retracted by a pneumatic process, feature a patented design that employs advanced elastomers and modern manufacturing techniques to meet the requirements of numerous applications.

BIO-GUARDIAN® SEALS: essential to the medical, pharmaceutical and food industries, the BIO-GUARDIAN® sealing solution prevents bacterial and microbial growth on equipment and materials. The BIO-GUARDIAN® solution can be used in CEFIL’AIR® inflatable seals to meet the needs of demanding hygienic applications.




Features & Benefits


  • Expand and retract with movement of fluids (pneumatic or hydraulic)
  • No seal stress during opening and closing phases
  • Large material selection: Silicone, SBR, EPDM, FKM, HNBR, which offer highly resistant mechanical and physical properties to ensure a long lifetime and numerous operating cycles
  • Highly flexible design: available in a large selection of shapes and sizes
  • BIO-GUARDIAN ® elastomers prevent the development of bacteria and biofilm formation
  • Laser marking for complete traceability
  • RFID chip can be included for traceability & reliability
  • Can be used for moving, handling, holding or clamping, particularly large, fragile or complex objects



Product Applications


  • Movable cofferdam bulkheads
  • Storage and transport containers
  • Leak-tight panels (naval, aerospace industry)
  • Nuclear vessels (equipment or personnel chambers)
  • Isothermal chambers
  • Clean rooms
  • Phonic isolation
  • Sliding or quick-locking doors (autoclaves, sterilizers)
  • Centrifugal filters (access doors and drainage hoppers)
  • Aircraft access doors
  • Cockpit canopies
  • Portholes
  • Cofferdams
  • Pneumatic conveyors (bagging hoppers, valve gates)


SPEAK WITH A SPECIALIST

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


Specifications




Resources

ORIGRAF® Graphite Seals

ORIGRAF® Graphite Seals


ORIGRAF® Graphite Seals


The ORIGRAF® seal provides a lasting high-performance sealing solution for all industries. It can be specifically designed for extreme thermal & pressure cycles ensuring higher safety in operation while optimizing total cost of ownership.

Unlike flexible graphite cut gaskets, the compression of the ORIGRAF® die-formed seal is limited by a mechanical stop: groove or inner and/or outer ring. In the case of assemblies subject to extreme pressure and/or temperature this design prevents excessive seating stress on the seal during transients.

This reliable and sustainable solution allows the optimization of overall operating costs, increasing the Mean Time Between Failure (MTBF).




Features & Benefits


  • Excellent elastic recovery, capable of reaching 40% of compression recovery (spring back effect)
  • Graphite spring-back effect serves the sealing function
  • Adaptability to extreme thermal and pressure changes
  • Chemical inertness: withstands most chemicals (mineral acids and solvents)
  • Natural lubrication of the graphite: excellent resistance to radial movements of the flanges
  • Can be adapted to damaged flanges
  • Flexible graphite does not stick to the contact surfaces: can be easily removed
  • Low creep and relaxation
  • Withstand differential radial motion



Product Applications


ORIGRAF® seals are mainly used in applications servicing the following industries:

  • Nuclear
  • Chemical
  • Petrochemical
  • Aerospace
  • Oil & Gas

The range of applications can be extensive, including:

  • Steam equipment
  • Heat exchangers/heaters
  • Piping connection flanges
  • Corrosive circuit
  • Critical flange applications
  • Boilers manways
  • Fire safe requirements
  • Alkylation units


SPEAK WITH A SPECIALIST

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


Specifications




Resources

BELFAB® Metal Bellow

BELFAB® Edge Welded Metal Bellows


BELFAB® Edge Welded Metal Bellows

BELFAB® Metal Bellow

BELFAB® Edge Welded Metal Bellows


BELFAB® Edge Welded Metal Bellows


Technetics Semi brings over 60 years of experience to designing, testing and manufacturing edge-welded metal bellows for critical applications.


See BELFAB®  Edge Welded Metal Bellows in Action on NASA’s Mars Perseverance Rover



Features & Benefits


  • Wide range of materials and configurations to choose from
  • High spring rate, very low tolerance for axial displacement
  • Low magnetic permeability
  • Corrosion-resistant
  • 0.0015” to 0.02” diaphragm thickness
  • 1/4” to 18” outer diameter
  • Vacuum pressure to > 1,000 psi
  • Cryogenic temperatures to 1800°F



As a forerunner in the development of this technology, we continually work to advance the state of the art by engineering unique design solutions that solve critical needs within complex mechanical systems. We also offer contract assembly services including design, fabrication, welding, upper-level assembly, testing and packaging. A certified Class 100/1000 cleanroom assembly environment is available as required. As an ISO 9001-certified organization noted for world-class cellular manufacturing, Technetics Semi has built its reputation on a foundation of total quality achievement.


Product Applications


  • Semiconductor: actuators, beamlines, connectors, feed-throughs, leak detectors, sensors, wafer handlers
  • Aerospace: reservoirs, toggle switches, cold plate assemblies, fuel drains, engine kiss seals
  • Oil & Gas: actuators, connectors, couplings, feed-throughs, gas lines, reservoirs, sensors
  • Medical: batteries, cardiovascular devices, implants, drug delivery, monitoring devices, vacuum pumps, valves


Resources


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HELICOFLEX® Spring Energized Seal

HELICOFLEX® Spring-Energized Metal Seals


HELICOFLEX® Spring-Energized Metal Seals