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The material of the fitting and the material for the seal must be selected according to the medium and the location!
The data listed below is a recommendation for static seals such as o-rings and profile sealing rings in tube fittings.
This is based on experience and specifications supplied by the manufacturer.
This table is therefore only a guideline.
| Medium | Fitting material | Seal material | |||
| Steel | Stainless steel | NBR | FKM | EPDM | |
| Suitability: 1 = satisfactory 2 = limited suitability 3 = not suitable X = no information NBR = e.g. Perbunan (Trademark from Bayer) FKM = e.g. Viton (Trademark from DuPont) EPDM = Ethylen-Propylen-Dien-Monomer | |||||
| Acetone | 2 | 1 | 3 | 3 | 1 |
| Acetylene | 2 | 1 | 3 | 3 | 2 |
| Ammonia liquid | 2 | 1 | 2 | 3 | 1 |
| Ammonia gas, cold | 1 | 1 | 1 | 3 | 1 |
| Aral, Vitam BAF | 1 | 1 | 1 | 1 | 3 |
| Argon | 1 | 1 | 1 | 1 | 1 |
| Asphalt | 3 | 1 | 2 | 1 | 3 |
| ASTM-oil, No.1 | 1 | 1 | 1 | 1 | 3 |
| ASTM-oil, No.2 | 1 | 1 | 1 | 1 | 3 |
| ASTM-oil, No.3 | 1 | 1 | 1 | 1 | 3 |
| ASTM-oil, No.4 | 1 | 1 | 2 | 1 | 3 |
| ATF oil | 1 | 1 | 1 | 1 | 3 |
| Ethanol (Ethylacohol) | 1 | 1 | 1 | 3 | 1 |
| Ether | 1 | 1 | 3 | 3 | 2 |
| Gasoline | 2 | 1 | 3 | 1 | 3 |
| Benzene | 1 | 1 | 3 | 1 | 3 |
| Brake fluid | 1 | 1 | 3 | 3 | 1 |
| Butane | 1 | 1 | 1 | 1 | 3 |
| Castrol, Biotec HVX | 1 | 1 | 1 | 1 | 3 |
| Chlorine (dry) | 3 | 1 | 3 | 1 | X |
| Steam | 2 | 1 | 3 | 3 | 1 |
| DEA, Econa E22 | 1 | 1 | 1 | X | 3 |
| DEA, Econa E46 | 1 | 1 | 1 | X | 3 |
| Diesel fuel | 1 | 1 | 1 | 1 | 3 |
| Pressurized air | 1 | 1 | 1 | 1 | 1 |
| ECOOL | 1 | 1 | 1 | 1 | X |
| Natural gas | 2 | 1 | 1 | 1 | 3 |
| Fossil oil | 1 | 1 | 2 | 1 | 3 |
| ESSO, Univis 13 | 1 | 1 | 1 | 1 | 3 |
| ESSO, Univis 26 | 1 | 1 | 1 | 1 | 3 |
| ESSO, Univis 32 | 1 | 1 | 1 | 1 | 3 |
| ESSO, Univis 46 | 1 | 1 | 1 | 1 | 3 |
| FINA, Biohydran RS 38 | 1 | 1 | 1 | 1 | 3 |
| FRAGOL, Hydrolub 125 | 1 | 1 | 1 | X | 3 |
| Freon 11 | X | X | 2 | 2 | 3 |
| Freon 12 | 1 | 3 | 2 | 1 | 3 |
| Freon 22 | 3 | 1 | 3 | 2 | 3 |
| Transmission oil | 1 | 1 | 1 | 1 | 3 |
| Glycerine | 2 | 1 | 1 | 1 | 1 |
| Glycol (ethylene glycol) | 1 | 1 | 1 | 1 | 1 |
| Domestic fuel oil | 1 | 1 | 1 | 1 | 3 |
| Helium | 1 | 1 | 1 | 1 | 1 |
| Houghton Safe 1120 | 1 | 1 | 3 | 1 | 1 |
| Houghton Safe 620 | 1 | 1 | 1 | 2 | 1 |
| Hydraulic oil, mineral | 1 | 1 | 1 | 1 | 3 |
| Hydrolube | 1 | 1 | 1 | 1 | 1 |
| Iodine | 3 | 1 | 2 | 1 | 2 |
| Kerosene | 1 | 1 | 1 | 1 | 3 |
| Carbon dioxide | 1 | 1 | 1 | 2 | 1 |
| Carbon monoxide | 1 | 1 | 1 | 1 | 1 |
| Carbonic acid | 3 | 1 | 2 | 1 | 1 |
| Air (without oil) | 1 | 1 | 1 | 1 | 1 |
| Seawater | 3 | 2 | 1 | 1 | 1 |
| Methane | 1 | 1 | 1 | 1 | 3 |
| Methanol | 1 | 1 | 3 | 3 | 1 |
| MIL-F-8192 (JP-9) | 1 | 1 | 3 | 1 | 3 |
| MIL-H-5606 | 1 | 1 | 1 | 1 | 3 |
| MIL-H-6083 | 1 | 1 | 1 | 1 | 3 |
| MIL-H-7083 | 1 | 1 | 1 | 2 | 1 |
| MIL-H-8446 (MLO-8515) | 1 | 1 | 2 | 1 | 3 |
| MIL-L-2104 & 2104B | 1 | 1 | 1 | 1 | 3 |
| MIL-L-7808 | 2 | 1 | 2 | 1 | 3 |
| Mineral oils | 1 | 1 | 1 | 1 | 3 |
| Natural as, unprocessed | 3 | 1 | 3 | 3 | 3 |
| Neon | 3 | 1 | 1 | 1 | 1 |
| Ozone | 1 | 1 | 3 | 1 | 1 |
| Crude Oil | 1 | 1 | 1 | 1 | 3 |
| Phosphoric acid | 3 | 3 | 3 | 1 | 2 |
| Plantohyd 32 S | 1 | 1 | 1 | X | 3 |
| Plantohyd 40 N | 1 | 1 | 1 | 1 | 3 |
| Propane | 1 | 1 | 1 | 1 | 3 |
| R 134 A | 1 | 1 | 3 | 3 | 1 |
| Flue gas | 3 | 1 | 3 | 2 | X |
| Raw oil | 2 | 1 | 2 | 1 | 3 |
| Nitric acid | 3 | 1 | 3 | 2 | 3 |
| Hydrochloric acid | 3 | 2 | 3 | 1 | 2 |
| Saltwater (NaCl) | X | 1 | 1 | 1 | 1 |
| Oxygen (gas, cold) | 3 | 1 | 3 | 3 | 3 |
| Lubricating oil SAE 10, 20, 30, 40, 50 | 1 | 1 | 1 | 1 | 3 |
| Cutting oil | 1 | 1 | 1 | 3 | 1 |
| Sulfur dioxide | 3 | 1 | 3 | 3 | 1 |
| Sulfuric acid | 3 | 2 | 3 | 1 | 3 |
| Soap solutions | 3 | 1 | 1 | 1 | 1 |
| SHELL, Naturelle HF-E-46 | 1 | 1 | 1 | 1 | 3 |
| SHELL, Tellus Oil DO 32 | 1 | 1 | 1 | 1 | 3 |
| Silicon oils | 1 | 1 | 1 | 1 | 1 |
| Skydrol 500 | 1 | 1 | 3 | 3 | 1 |
| Skydrol 7000 | 1 | 1 | 3 | 2 | 1 |
| Nitrogen | 1 | 1 | 1 | 1 | 1 |
| Turpentine | 2 | 1 | 1 | 1 | 3 |
| Toluene | 1 | 1 | 3 | 2 | 3 |
| Trichloroethane | 2 | 1 | 3 | 1 | 3 |
| Water | 2 | 1 | 1 | 2 | 1 |
| Hydrogen | 3 | 1 | 3 | 3 | 3 |
| Hydrogen peroxide | 3 | 1 | 3 | 1 | 2 |
| Xylene | 1 | 1 | 3 | 1 | 3 |
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Contact
CONEXA GmbH
Präzisionsarmaturen
Vorm Berge 1
D - 34346 Hann. Münden
+49 (0)5541 98770
+49 (0)5541 987777
CONEXA Hann.Münden
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CONEXA GmbH
Präzisions-Armaturen
Vorm Berge 1
D - 34346 Hann. Münden
+49 (0)5541 98770
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