Micaseal Suniflex – Premium heat resistance for demanding conditions

Micaseal Suniflex is mica-based gasket material designed for environments that require high heat resistance and versatile chemical resistance. It has plenty of use cases in power plants, combustion engines, exhaust systems and gas scrubbers.

Mica-based materials work especially well in places where graphite proves inadequate. Graphite-based materials start to slowly burn in temperatures over 450 °C and the burning intensifies the higher the temperature rises. Mica can withstand temperatures of over 900 °C.

The new material is available in three 316L steel reinforced thicknesses: 1.3 mm, 2 mm and 3 mm. Metal eyelets can be used to improve the material’s sealing qualities and leaking pressure even further.

The material has fulfilled our rigorous quality requirements and is available immediately. Micaseal Suniflex is well-suited for different gasket geometries, and we are happy to help you in designing sealing solutions for even the most demanding conditions.

Don’t hesitate to contact us and ask for more information!

Micaseal Suniflex

Material Information

Manufacturer Planichem
Composition Mica, tanged 316L steel insert 
Applications High Temperature Applications 
Approvals API Fire Safe 
Colour Beige
Thickness (mm) 1,3; 2,0; 3,0 (two inserts in 3,0 mm) 
Sheet dimensions (mm) 1 000 x 1000, 1 500 x 1 500 
Density, (g/cm³) 1,65–1,95 
Compressibility, DIN 3535-6 (%) > 16 
Recovery, DIN 3535-6 (%) > 3 
Tensile strength, ASTM F152 (MPa) not defined 
Stress resistance, DIN 52913 (MPa) not defined 
Specific leak rate, DIN 3535-6 (mg/s∙m) < 0,1 
Thickness increase, ASTM F146 (%)not defined 
Compression modulus, DIN 28090-2 (%) not defined 
Creep relaxation, DIN 3535-6 (%) < 12 
Peak temperature (°C/°F) 1 000/1 832 
Continuous temperature (°C/°F) 900/1 652 
Maximum pressure (bar/psi) 60/870 


Micaseal Suniflex pT-diagram

Recommended Media

Acetic acid Dichlorobenzene Methylene chloride Sulphuric acid 
Acetone Dye liquor Mineral oil Tar 
Acetylene Ethyl acetate Mobiltherm Turpentine 
Acrylic acid Ethyl alcohol Naphtalene Toluene 
Acrylonitrile Ethylene glycol Natural gas Town gas 
Air Ethylene oxide Nitric acid Transformer oil 
Alkaline lye Ethyl ether Nitrogen Tributyl phosphate 
Aluminium chloride Ethylene Oleum Triethanolamine 
Ammonia Ethylene chloride Oxygen Urea 
Amyl acetate Fatty acids Paraffin Vegetable oil 
Amyl alcohol Ferric chloride Pentachlorophenol Vinyl acetate 
Aniline Formaldehyde Perchloric acid Vinyl chloride 
Aviation fuel Formic acid Petroleum Vinylidene chloride 
Beer Freons Phenol Water 
Benzene Gas oil Phosgene Whiskey 
Benzoyl chloride Gasoline Phosphoric acid White spirit 
Biphenyl Heating oil Pthalic anhydride Zylene 
Blast furnace gas Hydraulic oil (glycol) Potassium hydroxide 
Bleach Hydraulic oil (mineral) Potassium hydroxide 
Boiler feed water Hydrazine Potassium nitrate 
Brine Hydrocarbons Potassium permanganate 
Calcium chlorate Hydrochloric acid Producer gas 
Capro-lactam Hydrogen Pyridine 
Carbolic acid Hydrogen chloride Sea water 
Carbon dioxide Hydrogen peroxide Silicone oil 
Carbon disulphide Hydrogen sulfide Soda ash 
Carbon monoxide Isopropyl acetate Sodium bi-carbonate 
Carbon tetrachloride Isopropyl alcohol Sodium carbonate 
Chile saltpetre Kerosene Sodium cyanide 
Chlorine Lime Sodium hydroxide 
Chlorinated hydrocarbons Lubrication oil Sodium hypochlorite 
Chloroacetid acid Machine oil Sodium nitrate 
Chloro benzene Magnesium sulphate Starch 
Chromic acid Malic acid Steam 
Copper sulfate Methane Steam condensate 
Creosote Methyl acrylate Styrene 
Cresol Methyl alcohol Sulphur 
Crude oil Methyl isobutyl ketone Sulphur dioxide 
Cyclohexanol Methyl methacrylate Sulphur trioxide 

Download datasheet (pdf)