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SPETOMET® FEB is a fourth-generation, low-emission multi-serrated gasket designed for demanding applications involving hazardous media (including hydrogen and oxygen, as well as volatile organic compounds such as methane and benzene), subject to regulations on emission reduction and industrial decarbonization.

Thanks to an innovative, patented metal core profile—developed through FEM numerical analysis and validated by laboratory testing — SPETOMET® FEB ensures the highest level of tightness over a very wide range of assembly stresses.

 

KEY FEATURES AND BENEFITS:

  • Provides the highest level of tightness at low contact stresses (Qsmin), while maintaining resistance to variable operating conditions, thermal shocks, and vibrations. 
  • The most versatile of all semi-metallic gaskets, capable of replacing spiral wound gaskets (SWG), standard serrated gaskets (KAMM), as well as corrugated (CORR) and double jacketed (DJ) gaskets. 
  • Ensures long-term low-emission control - characterized by very low relaxation and creep rates due to its specialized design and the use of aging-resistant materials. 
  • Capable of withstanding very high contact stresses thanks to a high Qsmax factor. 
  • Exceptional ease of installation - no special requirements for sealing surface preparation; enhanced elasticity allows adaptation to flange irregularities such as waviness or flatness deviations. 
  • Provides fire-safe performance in accordance with API 6FB, enabling operation in flammable or explosive environments. 
  • Compliant with EN 1514, EN 12560, and ASME B16.20 standards; available in a wide range of dimensions, including non-standard connections. 
  • Equipped with a full set of design coefficients for calculations according to: European standard EN 1591-1, American ASME Section VIII, German AD 2000 Merkblatt 
  • Enables compliance with repair requirements without the need for bolt replacement within LDAR procedures. 

LOW EMISSIONS AND AVAILABLE DESIGN FORMS

Regardless of the structural design variant used, SPETOMET®  FEB provides a level of tightness unreachable for other gasket types - including spiral wound (SWG) and serrated (KAMM) gaskets - whose designs were historically focused on operational reliability and safety, but developed decades ago without consideration of emission class or low-emission requirements.
 

BASIC DESIGN TYPES

  • FEB NR – version with no centering ring intended for TG (tongue-groove) and MF (male-female) flanges, most commonly found in heat exchanger connections and industrial valve body joints.
  • FEB IR / LR – versions with centering ring designed for IBC FF (flat face) and RF (raised face) flanges with bolt centering (IBC type): 
    IR design with intgerated centering ring includes a break-off groove to counteract the negative effects of vibration, 
    LR design with loose centering ring reducing stress in the case of wide outer rings (recommended for high pressure classes PN / Class). 
     

As being both manufacturer and patent owner, SPETECH offers many additional dedicated design variants based on the SPETOMET®  FEB concept, including:

  • version with an internal centering ring, 
  • blind gasket replacing shut-off valves,
  • orifice gasket enabling flow restriction or acceleration, 
  • double sealing system allowing early leak detection. 
     

AVAILABLE MATERIALS AND APPLICATIONS

SPETOMET® FEB demonstrates excellent compatibility with graphite, PTFE and mica facing materials.

Availability of a wide range of core materials (various grades of steels, nickel, titanium and exotic alloys) makes SPETOMET® FEB suitable for a broad spectrum of industrial applications, including:

  • process chemistry, 
  • conventional / renewable / nuclear power generation, 
  • oil & gas mining and processing, 
  • hydrogen industry 
  • pharmaceuticals, 

and many others.
Laboratory testing confirms the superiority of SPETOMET® FEB over previously known gasket types.
Its unique properties are particularly relevant for media covered by climate and decarbonization policies, including methane, carbon dioxide, and hydrogen, as well as for reducing hazardous emissions such as benzene, nitrogen oxides (NOX), fluorinated gases (HFC, SFC, SF₆), sulphur oxides (SOX) and other poisonous, explosive or dangerous media.

OPERATING PARAMETERS

TEMPERATURE RANGE

  • from [-268°C] (cryogenic / hydrogen applications) 
  • to [+750°C] (power generation / process chemistry) 

PRESSURE RANGE

  • high pressure up to 400 bar (40 MPa) (covers PN 400 and Class 2500) 
  • vacuum from 10⁻³ to 10⁻¹² mbar (HV and UHV)

AVAILABLE DESIGN DATA

  • ASME Section VIII 
  • AD 2000 Merkblatt 
  • EN 13555 
  • Leakage data with helium, methane, and hydrogen

COMPLIANCE WITH REQUIREMENTS

  • TA Luft (VDI 2200 and 2440) 
  • MESC (SPE 85/203 and 85/300) 
  • API 6FB 

EXAMPLES OF MATERIAL COMBINATIONS AND APPLICATIONS