08 TECHNICAL INFORMATION | PRODUCT SECTION
LABORATORY GLASSWARE AND PLASTICS
Plastics used with laboratory glass To complement DURAN® laboratory glassware products, various plastic products such as screw caps are available. Their properties are listed in the following table.
Abbreviation
Temperature resistance range °C
EPDM ETFE
Ethylene/propylene-diene-rubber
– 45 to + 150 – 100 to + 150
Partially crystalline ethylene/tetraflouro- ethylene copolymer
EVA FEP FKM PBT
Ethylene-vinyl acetate
– 80 to + 70
Tetra-Fluor-Ethylen/Hexafluor-Propylene
– 200 to + 200 – 20 to + 200 – 45 to + 180 – 40 to + 80 – 40 to + 90 – 40 to + 140 – 200 to + 260 – 30 to + 135 – 196 to + 260
Fluorinated rubber
Polybutylenterephthalat
PE
Polyethylene
POM
Polyoxymethylene
PP
Polypropylene
PTFE
Polytetrafluorethylene
PU
Polyurethane
PFA TPE VMQ
Thermoplastic/duroplastic Thermoplastic/duroplastic
to + 140
Silicone rubber
– 50 to + 200 – 45 to + 180
PSU Compound
Compound polyarylsulfone based
Chemical resistance of plastics
Classes of substances + 20 °C
Alcohols, aliphatic + + + + + + + + + + + + + + – + + + Aldehydes + + ++++++++ + + + + + Alkaline solutions + + + + + + + + + + – + + + + – + + + Esters + + +++++++–+++ – – + Ethers ––+++++++––+–++ Hydrocarbons, aliphatic – + + ++++++ – ++++++ + + Hydrocarbons, aromatic – + +++++++– ++++++ – Hydrocarbons, halogenated – + ++++++– + –+++ – Ketones + + ++++++ –+++ – + – Acids, dilute or weak + + + + + + + + + + + – + + + + + + – + + Acids, conc. or strong + + +++++++–+++++–++ Acids, oxidising –+–+++++––++–+
+ + = very good resistance + = good to limited resistance – = low resistance
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