Glass wool


Resilient glass mineral wool blankets engineered for cryogenic tank decks
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Design specifications for storage tanks containing cryogenic fluids such as liquefied natural gas (LNG), ethylene or nitrogen for chemical or combustion processes, are not only highly demanding in terms of construction, but also in terms of insulation. With the tank volume expanding and contracting depending on the level of liquid inside, the insulation must offer high levels of both compressibility and resilience. To meet this requirement, ISOVER has developed the unique CRYOLENE product range.

CRYOLENE 681 has been designed for the insulation of cryogenic tank suspended decks. 

The properties and performance of CRYOLENE 681 have been extensively tested by external institutes and the products are well-proven through decades of successful use worldwide in chemical and LNG applications.

Key Benefits

  • Lightweight
  • Fast installation
  • Sound absorption
  • Fire reaction
  • Improved logistics

Technical Characteristics

Symbol Unit Quantities and declared values Standard
Specific thermal capacity Symbolc UnitkJ/(kg·K) Quantities and declared values1.03 StandardISO 10456
Reaction to fire Symbol- Unit- Quantities and declared values681 VV: Non combustible; Euroclass A1 681 AA: Euroclass A2-s1, d0 681 VV: Fire Spread Index = 0; Smoke Development Index < 20 681 AA: Fire Spread Index < 25; Smoke Development Index < 25 StandardEN 13501-1 ASTM E84
Water behaviour SymbolWS Unitkg/m² Quantities and declared values   No short term water absorption by partial immersion (WS1 ≤ 1 kg/m2) StandardEN ISO 29767
Tensile strength Symbol- Unit- Quantities and declared values681 VV: reinforced glass veil 681 AA: reinforced aluminium foil The facing contributes to provide the CRYOLENE blanket its tensile strength Standard-
Chemical behaviour Quantities and declared valuesDo not contribute to corrosion of stainless steel StandardASTM C795/871
Application field Quantities and declared valuesProduct for use in cryogenic applications, such as Liquid Natural Gas storage tanks Shall be enclosed in vapor and water tight construction Non compatible with liquid oxygen StandardEN 14303
Material Quantities and declared valuesCRYOLENE products are highly resilient glass mineral wool rolls designed to retain their fibers elasticity over time at temperatures ranging from -170 °C to +120 °C With quality marks EUCEB and RAL by the Gütegemeinschaft Mineralwolle e. V., unrisky regarding health according to German decree on dangerous substances, decree on prohibition of chemicals and to regulation EC No 1272/2008 Note Q StandardCINI 2.1.02
Facing Quantities and declared values681 VV: faced with a yellow glass veil 681 AA: faced on one side with reinforced aluminium Standard-
Miscellaneous Quantities and declared valuesStorage: Rolls must be stocked vertically. For best resilient characteristics, all CRYOLENE references should not be stocked packed more than 3 months.  Designation code : MW-EN 14303-T1-WS1 StandardEN 14303
Quality management Quantities and declared valuesCE-marked according to EN 14303 ISOVER is certified according to EN ISO 9001 and EN ISO 14001 StandardEN 14303 EN ISO 9001 EN ISO 14001
Delivery form Quantities and declared valuesPlease contact your local ISOVER dealer All dimensions require minimum order quantities Standard-

Thermal Conductivity

Characteristic Symbol Unit Quantities and declared values Standard
CharacteristicThermal conductivity SymbolT Unit[°C] Quantities and declared values-150 Quantities and declared values_-120 Quantities and declared values__-100 Quantities and declared values___-50 Quantities and declared values____- Quantities and declared values_____100 Quantities and declared values______- StandardEN 12667
EN ISO 13787
Symbolλ Unit[W/(m•K)] Quantities and declared values0.015 Quantities and declared values_0.019 Quantities and declared values__0.021 Quantities and declared values___0.028 Quantities and declared values____0.037 Quantities and declared values_____0.039
CharacteristicThermal behaviour SymbolT Unit[°C] Quantities and declared valuesOperating temperature range -170 °C until + 120 °C


Technical Manuals