Optibelt ZRP - ZRL Resistance to Chemicals

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The data on the chemical resistance of Optibelt ZRL timing belting
refers to the material polyurethane and is based on laboratory
values which have been determined under ideal conditions.
4.7 ZRL, resistance to chemicals
Resistance of optibelt ZRL-M open-ended and
optibelt ZRL-V joined endless timing belts
+ resistant: slight or no weight or dimensional changes, no damage caused by the
medium.
0 conditionally resistant to non-resistant: significant weight and dimensional
changes with prolonged contact; depending on marginal conditions (for example
brief contact), use still possible in some cases. Practical trial under applicable
conditions recommended.
– non-resistant or soluble: serious attack and damage within a short time.
Q reversible swelling: reduction of mechanical properties in swollen state.
+ Q chemically resistant, but reversible swelling.
0 Q conditionally resistant with reversible swelling.
Acetone 20 0 Q
Ethanol 20 0 Q
Ethyl acetate 20 –
Ethyl ether 20 + Q
Aluminium chloride, 5% aqueous solution 20 +
Ammonia, 10% aqueous solution 20 +
Aniline 20 –
ASTM oil No. 1 80 +
ASTM oil No. 2 80 +
ASTM oil No. 3 80 0/+
Petrol, “regular” 20 + Q
Petrol, “super” 20 0/+ Q
Benzol 20 0 Q
Butanol 20 0 Q
Butyl acetate 20 –
Cyclohexanol 20 0 Q
Diesel fuel 20 + Q
Dimethyl formamide 20 –
Ferric chloride, 5% aqueous solution 40 0
Acetic acid, 20% aqueous solution 20 0
N-Heptan 20 + Q
Iso-propanol 20 0 Q
Caustic soda, 1-N aqueous solution 20 +/0
Kerosene 20 + Q
Salt solution, conc. 20 +
Methanol 20 0 Q
Methanol/petrol mixture 15 : 85 20 +/0 Q
Methylethyl ketone 20 0 Q
Methylene chloride 20 0/– Q
N-methylpyrrolidone 20 –
Mineral oil 80 +
Sodium chloride solution, conc. 20 +
Potassium hydroxide, 1-N aqueous solution 20 +/0
Sodium soap fat 20 +
Sodium soap fat + 20% water 80 +/0
Sodium hydroxide solution, 1-N aqueous solution 20 +/0
Nitric acid, 20% aqueous solution 20 –
Hydrochloric acid, 20% aqueous solution 20 0
Lubrication grease (sodium fat grease) 20 +
Sulphuric acid, 20% aqueous solution 20 0
Seawater 20 +
Carbon tetrachloride 20 0/– Q
Tetrahydrofuran 20 –
Toluol 20 –
Trichlorethylene 20 0/– Q
Water 20 +
Water 80 0/+
Water 100 0
Table 4.4: ZRL chemical resistance
Medium Temperature (°C) Resistance