User Manual
4 
Precautions for Design 
Warning 
(1)  Consult SMC if no leakage is allowed due to the environment, or if the operating fluid is not air. 
(2)  Nylon resin is used for the external parts including the bowl. Organic solvents including thinner, 
acetone, alcohol and ethylene chloride; chemicals including sulphuric acid, nitric acid and 
hydrochloric acid; cutting oil, synthetic oils, ester-based compressor oil, alkali, kerosene, gasoline, 
lock material of screw are harmful. Do not use the product where these are present. 
Type  Chemical name  Application examples 
Material
Nylon
Acid 
Hydrochloric acid 
Sulphuric acid, 
Phosphoric acid 
Acetic acid 
Chromic acid
Acid washing liquid for 
metals 
× 
Alkaline 
Sodium hydroxide 
(Caustic soda) 
Potash 
Calcium hydroxide 
(Slacked lime) 
Ammonia water 
Carbotane of soda
Degreasing of metals 
Industrial salts 
Water-soluble cutting oil 
〇 
Inorganic salts 
Sodium sulphide 
Sulphate of potash 
Sulphate of soda
- 
△
Chlorine solvents 
Carbon tetrachloride 
Chloroform 
Ethylene chloride 
Methylene chloride
Cleaning liquid for metals 
Printing ink 
Dilution 
△
Aromatic series 
Benzene 
Toluene 
Paint thinner
Coatings 
Dry cleaning 
△
Ketone 
Acetone 
Methyl ethyl ketone 
Cyclohexane
Photographic film,   
Dry cleaning, 
Textile industries
× 
Alcohol 
Ethyl alcohol 
IPA 
Methyl alcohol
Antifreeze 
Adhesives 
× 
Oil 
Gasoline 
Kerosene
- 
〇 
Ester 
Phthalic acid dim ethyl 
Phthalic acid diethyl
Synthetic oil 
Anti
-
rust additives
〇 
Ether 
Methyl ether 
Ethyl ether
Brake oil additives 
〇 
Amino  Methyl amine 
Cutting oil 
Brake oil additives 
Rubber accelerator
× 
Others 
Thread-lock fluid 
Sea water 
Leak tester
- 
△
〇: Essentially safe.     
△
: Some effects may occur.      ×: Effects will occur. 
2022-10-1811:23
DP 097499










