Doniflex® GMD
High-performance medium density beater material for industrial and automotive applications.
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DON 2.0 |
Properties and application
Gasket material with excellent resistance to hot water, steam and oils. Suitable for use in radiators, boilers, flanges, valves, pumps, engines, heat exchangers, compressors, power plants, heating systems, chemical industry.
Basis | Aramid fibers, Graphite, NBR |
Color | Silver |
Surface treatment
Antistick coating: silver colored non-stick top and bottom layer.
Dimensions of standard sheet
Sheet size | mm | 1000x1480, 1500x1480, 1480x2000* |
Thickness** | mm | 0.5, 0.8, 1.0, 1.5, 2.0, 3.0 |
* on request
** other thicknesses available on request
Technical data
General information for a thickness of 1.0 mm
Density | DIN 28090-2 | g/cm3 | 1.2 - 1.4 |
Compressibility | ASTM F 36/J | % | 15 - 25 |
Recovery | ASTM F/36/J | % | 25 - 40 |
Stress resistance (50 MPa, T=175°C, 16h) | DIN 52913 | MPa | min 42 |
Stress resistance (50 MPa, T=300°C, 16h) | DIN 52913 | MPa | min 38 |
Immersion in Oil IRM 903, 5h, 150°C | ASTM F146 | ||
- thickness increase | % | max 7 | |
- weight increase | % | max 25 | |
Immersion in ASTM Fuel B, 5h, 20°C | ASTM F146 | ||
- thickness increase | % | max 7 | |
- weight increase | % | max 22 | |
Specific Leak Rate | DIN 3535/6 | mg/(s.m) | ≈ 0.3 |
Creep deformation - 50 MPa/300°C | |||
- change in thickness at 20°C | % | ≈ 22 | |
- change in thickness at 300°C | % | ≈ 8 |
Media resistance
Media resistance chart serves only as a guideline for the selection of material for particular application. Due to the variety of assembly and operating conditions, the data may not be used to support any warranty claims.
ACETALDEHYDE | liquid solutions | MALEIC ANHYDRIDE | liquid solutions |
AIR | gas | MARLOTHERM | oil, mineral oil products |
ALLYL CHLORIDE | liquid solutions | MERCURY | miscellaneous |
ALUM | liquid solutions | MERCURY SALTS | liquid solutions |
ALUMINIUM CHLORIDE | liquid solutions | MINERAL OIL | oil, mineral oil products |
ALUMINIUM SULPHATE | liquid solutions | MINERAL OIL | oil, mineral oil products |
AMMONIUM PHOSPHATE | liquid solutions | MOTOR OIL | oil, mineral oil products |
ANILIN-HYDROCHLORIDE | liquid solutions |
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ASPHALT | oil, mineral oil products | NICKEL SALTS | liquid solutions |
ASTM OIL NO.1 FUEL | oil, mineral oil products | NITROGEN | gas |
ASTM OIL NO.2 FUEL | oil, mineral oil products |
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ASTM OIL NO.3C FUEL | oil, mineral oil products | OIL ACID | oil, mineral oil products |
ASTM FUEL A | oil, mineral oil products |
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ASTM FUEL B | oil, mineral oil products | PARAFFIN | oil, mineral oil products |
ASTM FUEL C | oil, mineral oil products | PETROLEUM | oil, mineral oil products |
ASTM FUEL D | oil, mineral oil products | PHOTOGRAPHIC EMULSIONS | liquid solutions |
AZ 20 (32+125) | oil, mineral oil products | PHTHALIC ANHYDRIDE | liquid solutions |
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| POLYETHYLENE GLYCOL | oil, mineral oil products |
BEER | liquid solutions | POTASH | liquid solutions |
BENZINE | oil, mineral oil products. | POTASSIUM ALUM | liquid solutions |
BITUMEN | oil, mineral oil products | POTASSIUM BROMATE | liquid solutions |
BORAX | liquid solutions | POTASSIUM BROMIDE | liquid solutions |
BRAKE FLUID (GLYCOL BASIS) | oil, mineral oil products | POTASSIUM CARBONATE | liquid solutions |
BUTADIENE | oil, mineral oil products | POTASSIUM PHOSPHATE | liquid solutions |
BUTENE (BUTYLENE) | oil, mineral oil products | POTASSIUM SALT | liquid solutions |
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| POTASSIUM SULPHATE | liquid solutions |
CALCIUM CHLORIDE | liquid solutions | PROPYLENE OXIDE | gas |
CALCIUM NITRATE | liquid solutions |
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CARBON DIOXIDE | gas | SACCHAROSE | liquid solutions |
CHLORINE GAS DRY | gas | SALT | liquid solutions |
CHROME ALUM | liquid solutions | SANTOTHERM 66 | oil, mineral oil products |
COCONUT OIL | oil, mineral oil products | SEA WATER | liquid solutions |
CONDENSATE WATER | water, steam | SILICONE GRAESE | oil, mineral oil products |
COPPER SALT | liquid solutions | SILVER SALT | liquid solutions |
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| SOAP SOLUTION | liquid solutions |
DEMINERALIZED WATER | water, steam | SODA | liquid solutions |
DEXTRINE | liquid solutions | SODIUM BROMIDE | liquid solutions |
DIESEL FUEL | oil, mineral oil products | SODIUM CARBONATE | liquid solutions |
DIPHYL ( HEAT CARRIER OIL) | oil, mineral oil products | SODIUM CHLORIDE | liquid solutions |
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| SODIUM DISULPHITE | liquid solutions |
ETHYLCELLULOSE | liquid solutions | SODIUM DITHIONITE | liquid solutions |
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| SODIUM FLUORIDE | liquid solutions |
FRUIT JUICE | liquid solutions | SODIUM HYDROGEN-CARBONATE | liquid solutions |
FLUE GAS | gas | SODIUM HYDROGEN-SULPHATE | liquid solutions |
FURNACE GAS | gas | SODIUM HYDROGEN-SULPHITE | liquid solutions |
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| SODIUM IODIDE | liquid solutions |
GEAR OIL | oil, mineral oil products | SODIUM PERBORATE | liquid solutions |
GELATIN | liquid solutions | SODIUM PHOSPHATE | liquid solutions |
GENERATOR GAS | gas | SODIUM SILICATE | liquid solutions |
GLAUBER SALT | liquid solutions | SODIUM SULPHATE | liquid solutions |
GLUCOSE | liquid solutions | SODIUM SULPHITE | liquid solutions |
GLYCOL | liquid solutions | SODIUM THIOSUPHATE | liquid solutions |
GLUE | liquid solutions | SPINDLE OIL | oil, mineral oil products |
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| SPIRITS | oil, mineral oil products |
HEAT CARRIER OIL | oil, mineral oil products | STARCH SOLUTION | liquid solutions |
HEPTANE (-n) | oil, mineral oil products | STEAM | water, steam |
HEXANE (-n) | oil, mineral oil products | SULPHUR DIOXIDE | gas |
HOT WATER | water, steam | SYLTHERM 800 | oil, mineral oil products |
HYDRAULIC OIL | oil, mineral oil products | SYNTREL 350 | oil, mineral oil products |
HYDROSULPHITE | liquid solutions |
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| TANNIC ACID | liquid solutions |
INERT GAS | gas | TAR | oil, mineral oil products |
ISOOCTANE | oil, mineral oil products | TEST BENZINE | oil, mineral oil products |
ISOPROPYL ACETATE | liquid solutions food | TETRAETHYL LEAD | oil, mineral oil products |
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| TRANSFORMER OIL | oil, mineral oil products |
KEROSINE FUEL | oil, mineral oil products | TRI SODIUM PHOSPHATE | liquid solutions |
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| TURBINE OIL | oil, mineral oil products |
LANOLINE (WOOL GREASE) | liquid solutions |
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LATEX | liquid solutions | VASELINE | oil, mineral oil products |
LAUGHING GAS | gas | VEGETABLE FAT | oil, mineral oil products |
LIGHTING GAS | oil, mineral oil products | VEGETABLE OILS | oil, mineral oil products |
LINK UP MEDIUMS | liquid solutions | VINYL CHLORIDE | gas |
LINSEED OIL | liquid solutions |
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LITHIUM BROMIDE | liquid solutions | WASCHING AGENT | liquid solutions |
LUBRICATING OIL | oil, mineral oil products | WASTE GAS | gas |
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| WASTE WATER | liquid solutions |
MACHINE OIL | oil, mineral oil products |
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MAGNESIUM SALT | liquid solutions | ZINC SALTS | liquid solutions |