Seal Material Selection Table (For reference) For seal parts in the Cupla (the important parts that prevent leaking to the outside), it is important to select the most appropriate seal material to suit the property and temperature of the fluid. It is so important that wrong selection may not only completely malfunction the Cupla but also cause an unexpected accident. *The rubber material must be selected and specified by the user. Seal Material Seal Material Seal Material Fluids Fluids Fluids Fluoro Fluoro Fluoro rubber rubber rubber rubber rubber rubber Ethylene- Ethylene- Ethylene- propylene propylene propylene Perfluoroelastomer Perfluoroelastomer Perfluoroelastomer A Acetaldehyde ─ ○ ◎ B Bromine water ◎ ─ D Dichlorophenol ◎ ─ Acetic anhydride ─ ○ ◎ Butadiene ○ △ Diethanolamine ─ ○ Acetone ─ ◎ ◎ Butane ◎ ─ Diethylene glycol ◎ ◎ Acetonitrile ─ ○ Butane (liquid) ◎ ─ E Ethanol ◎ ◎ ◎ Acetophenone ─ ◎ ◎ Butane (2.2-, 3-dimethyl) ◎ ─ Ethyl acetate ─ ○ Acetylacetone ─ ◎ ◎ Butanol (Butyl alcohol) ◎ ○ Ethyl alcohol ◎ ◎ ◎ Acetyl chloride ◎ ─ Butyl acetate ─ ○ ○ Ethyl benzene ◎ ─ ◎ Air (50˚C) ◎ ◎ ◎ Butyl stearate ◎ ─ Ethyl cellulose ─ ○ Aluminium bromide (65˚C) ◎ ◎ Butylene ◎ ─ Ethyl chloride ◎ ◎ Aluminium chloride (65˚C) ◎ ◎ Butyraldehyde ─ ○ ○ Ethylene glycol ◎ ◎ ◎ Aluminium nitrate (65˚C) ─ ◎ C Calcium acetate ─ ◎ Ethylene trichloride ◎ ─ Aluminium sulfate (65˚C) ◎ ◎ Calcium acetate (65˚C) ─ ◎ F Fluorine (dry ) ─ ─ ○ Amine ─ ○ ○ Calcium carbide ─ ─ Formaldehyde ─ ─ Ammonia (anhydrous) ─ ◎ Calcium carbonate ─ ─ Furfural ─ ○ ◎ Ammonia (cool) ─ ◎ Calcium hydroxide (65˚C) ◎ ◎ G Glycerine (65˚C) ◎ ◎ Ammonia (65˚C) ─ ○ Calcium nitrate (65˚C) ◎ ◎ Glycol ◎ ◎ Ammonia gas ─ ◎ Calcium perchlorate ─ ─ H Helium ◎ ◎ ◎ Ammonium carbonate ─ ◎ Calcium sulfate ─ ─ Heptane ─ ─ Ammonium chloride ─ ◎ Calcium sulfate (65˚C) ─ ─ Hexane ─ ─ ◎ Ammonium hydroxide ○ ◎ Calcium sulfite ◎ ─ Hydrogen ◎ ◎ Ammonium nitrate (65˚C) ─ ◎ Carbitol ○ ○ Hydrogen bromide ─ ─ ○ Ammonium phosphate (65˚C) ─ ◎ Carbon dioxide gas (65˚C) ○ ○ Hydrogen peroxide (30%) ○ ○ Ammonium sulfate (65˚C) ─ ◎ Carbon disulfide ◎ ─ I Iron chloride ◎ ◎ Ammonium sulfite ─ ◎ Carbon monoxide (65˚C) ◎ ◎ Iron nitrate (65˚C) ◎ ◎ Amyl acetate ─ △ ○ Carbon tetrachloride ◎ ─ ◎ Iron sulfate (10%) ─ ─ Amyl alcohol ○ ◎ ○ Chlorine gas ◎ ─ Isooctane ◎ ─ ◎ Aniline △ ○ ◎ Chlorine (liquid) ─ ─ Isopropyl acetate ─ ○ Arsenic trichloride ─ ─ Chlorine water ◎ ○ Isopropyl alcohol ◎ ◎ B Barium chloride ◎ ◎ Chloroacetone ─ ◎ Isopropyl ether ─ ─ Barium hydroxide (65˚C) ◎ ◎ Chlorobenzene ◎ ─ K Kerosene ◎ ─ Barium nitrate (65˚C) ◎ ─ Chloroform ◎ ─ ◎ L Liquid glass (Sodium silicate) ─ ─ Barium sulfate (65˚C) ─ ─ Chlorophenol ◎ ─ M Magnesium chloride (65˚C) ◎ ◎ Barium sulfide ◎ ◎ Copper chloride (65˚C) ◎ ◎ Magnesium hydroxide (65˚C) ◎ ◎ Benzaldehyde ─ ◎ Copper cyanide ◎ ◎ Magnesium nitrate ─ ─ Benzene ◎ ─ Copper sulfate ◎ ◎ Magnesium sulfate (65˚C) ◎ ◎ Benzyl alcohol (65˚C) ◎ ○ Cresol (50˚C) ◎ ─ Maleic anhydride ◎ ─ Benzyl chloride ◎ ─ D Diacetone alcohol ─ ◎ ◎ Methanol ─ ◎ Bromine ◎ ─ ◎ Dibenzyl ether ─ ○ Methyl bromide ◎ ─ 23 How to read the selection tables Note: : Practically no harm, and can be used (Excellent) When selecting the seal material, please consider the following suggestions carefully: : Some harm may be inevitable but can be used under restrictions (Good) 1. If there is no comment in the column of the fluid name, the condition of the fluid is under saturation at room temperature. : Should be avoided if at all possible (Not recommended) 2. Please check with us for applications at a high fluid temperature or with different : Should not be used (Unsuitable) fluid concentrations. 3. For applications related to foods, please order separately specifing the detailed applications. Seal Material Seal Material Seal Material Fluids Fluids Fluids Fluoro Fluoro Fluoro rubber rubber rubber rubber rubber rubber Ethylene- Ethylene- Ethylene- propylene propylene propylene Perfluoroelastomer Perfluoroelastomer Perfluoroelastomer M Methyl butyl ketone ─ ◎ P Potassium nitrite ─ ◎ T Triethanolamine ─ ○ Methyl chloride ◎ △ Potassium phosphate ─ ─ V Vinyl acetate ─ ◎ Methyl ethyl ketone ─ ◎ ◎ Potassium silicate ◎ ◎ Vinyl chloride ◎ △ Methyl propyl ketone ─ ○ Potassium sulfate ◎ ◎ Vinyl chloride resin ◎ ─ Methyl salicylate ─ ○ Potassium thiosulfate ─ ─ W Water (65˚C) ◎ ◎ ◎ Methylene bromide ○ ─ ○ Propyl acetate ─ ○ X Xylene ◎ ─ ◎ Methylene chloride ◎ △ ◎ Propyl alcohol (65˚C) ◎ ◎ Z Zinc chloride (65˚C) ◎ ◎ Monobromobenzene ◎ ─ Propylene ◎ ─ Zinc sulfate (65˚C) ◎ ◎ Monochlorobenzene ─ ─ Pyridine ─ ○ ◎ Monoethanolamine ─ ○ S Sodium acetate ─ ◎ N Naphthalene ◎ ─ Sodium aluminate ─ Nickel acetate ─ ◎ Sodium carbonate ◎ ◎ Nickel acetate (65˚C) ─ ◎ Sodium chloride ◎ ◎ Nickel ammonium sulfate ─ ─ Sodium chloride (salt water) ◎ ◎ Nickel chloride ◎ ◎ Sodium cyanide ─ ◎ Nickel nitrate ─ ─ Sodium hydroxide (50%) △ ◎ ◎ Nickel sulfate ─ ─ Sodium hydroxide (50˚C) ─ ◎ Nitrobenzene ○ ─ ◎ Sodium hypochlorite ◎ ○ ◎ Nitrogen (gas) ◎ ◎ ◎ Sodium iodide ─ ─ Normal heptane ◎ ─ Sodium metaphosphate ◎ ◎ Normal pentane ◎ ─ Sodium nirate ◎ ◎ O Octyl alcohol ◎ ◎ Sodium nitrite ─ ◎ Oleic acid (65˚C) ○ ─ Sodium peroxide ◎ ◎ Ortho-dichlorobenzene ◎ ─ Sodium phosphate ─ ─ Oxygen (gas) ◎ ◎ ◎ Sodium plumbate ─ ─ Ozone ◎ ◎ Sodium silicate ◎ ◎ P Pentane (2-,3-,4-methyl) ─ ─ Sodium sulfate ◎ ◎ Phenol ◎ ─ Sodium sulfide ◎ ◎ Phosphorus ─ ─ Sodium sulfite ◎ ◎ Phosphorous oxychloride (dry ) ◎ ◎ Sodium thiosulfate ─ ─ Phosphorous oxychloride (wet) ◎ ◎ Sulfur ◎ ◎ Phthalic anhydride ─ ─ Sulfur chloride (dry ) ◎ ─ Potassium acetate (65˚C) ─ ◎ Sulfur dioxide ◎ ◎ Potassium bichromate ◎ ◎ Sulfur tetroxide ◎ ─ ◎ Potassium carbonate ─ ─ T Tetraethyl lead ◎ ─ Potassium cyanide ◎ ◎ Tetralin ◎ ─ Potassium hydroxide (65˚C) ─ ◎ Titanium terachloride ◎ ─ Potassium nitrate (65˚C) ◎ ◎ Toluene (Toluol ) △ ─ ◎ 24.