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2 - 2 Materials Used
2-2
The table below shows the materials that the
EST
is made with and their environmental durability.
Chapter 2. NOMENCLATURE AND FUNCTIONS
Part name
Material
Resistance to chemicals and oil
Case/option cover
PC / ABS
These materials are resistant to water,
alcohol, oil, salts and weak acids. However,
alkali, aromatic hydrocarbons, halogenated
hydrocarbons and other substances may
cause them to swell or dissolve.
Touch switch panel
PET
PET is used in the panels.
Panel protective sheet
(polyethylene terephthalate)
Although it is permeable to strong acid,
alkali, boiling water and steam, it is highly
resistant to organic solvents and oils.
It is a thermoplastic material and a
crystalline resin.
Case packing
Nitrile rubber (JIS B2401 1A)
Though it is highly resistant to gasoline,
(JIS complying O ring
alcohol, inorganic acid, and alkali, the
for mineral oil.)
resistance to benzene, toluene,
trichloroethylene, ether, ketone, acetic
ether, organic acid, etc. is poor.