Doniflex® GLD
Aramid fibers, specially selected fillers and graphite combined in new high compressibility and environment friendly gasket material with excellent thermal properties.
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DON 2.0 |
Properties and application
Due to outstanding chemical and thermal resistance DONIFLEX® GLD is a proper choice for application in flanges, valves, pumps, heat exchangers in construction of power plants, heating systems and for use in chemical industry.
Basis | Aramid fibers, Graphite, NBR |
Color | Silver |
Approvals |
Surface treatment
Standard non-stick top and bottom layer.
Graphite or PTFE antistick coating on request.
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
Typical values for a thickness of 2 mm
Density | DIN 28090-2 | g/cm3 | ≈ 1.1 |
Compressibility | ASTM F 36/J | % | 35 - 45 |
Recovery | ASTM F/36/J | % | min 9 |
Tensile strength | DIN 52910 | MPa | min 2 |
Stress resistance (50 MPa, T=300°C, 16h) | DIN 52913 | MPa | min 33 |
Stress resistance (50 MPa, T=175°C, 16h) | DIN 52913 | MPa | min 36 |
Immersion in Oil IRM 903, 5h, 150°C | ASTM F146 | ||
- thickness increase | % | max 3 | |
- weight increase | % | max 35 | |
Immersion in ASTM Fuel B, 5h, 20°C | ASTM F146 | ||
- thickness increase | % | max 3 | |
- weight increase | % | max 35 | |
Specific Leak Rate | DIN 3535/6 | mg/sm | ≈ 0.5 |
Creep deformation - 50 MPa/300°C | |||
- change in thickness at 20°C | % | ≈ 30 | |
- change in thickness at 300°C | % | ≈ 14 | |
Maximum assembly surface stress at RT - δVO | DIN 28090-1 | MPa | ≈ 170 |
Compression modulus | DIN 28090-2 | ||
- at room temperature: εKSW | % | 20 - 30 | |
- at elavated temperature: εWSW/200°C | % | 8 - 10 | |
Percentage creep deformation | DIN 28090-2 | ||
- at room temperature: εKRW | % | › 3 | |
- at elavated temperature: εWRW/200°C | % | ≈ 1.1 | |
Recovery | DIN 28090-2 | mm | ≈ 0.023 |
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 |