VDA 675-245 (11/2020)
VDA 675-245: Elastomer-Bauteile in Kraftfahrzeugen - Prüfverfahren zur Eigenschaftsbestimmung - Durchlässigkeit von Flüssigkeiten und Dämpfen durch Elastomere / Test Method to determine properties - Permeation of liquids and greases through elastomers (Version 11/2020) - Gruppenlizenz (group license), AGB (GTC) Art. 10, 2
The purpose of this standard is to determine the permeability of elastomers to liquids or vapors to which they are in contact during service. Two different test methods are defined.
Methode 1: The liquid is solely in direct contact with the elastomer.
Methode 2: The vapor/air mixture is solely in direct contact with the elastomer.
This test method can provide data for
- qualification tests on different elastomers which are in question for a specific application (quality determination),
- comparison tests on different delivery batches of a specific elastomer compound (quality assurance).
The time between vulcanization and testing of elastomers shall be at least16 h and not longer than 6 months when investigating to this procedure.
Before testing, test pieces must be stored in unstressed condition for 8 h min. at (23 + 5) °C.