SR ISO 3384-1:2024

<p class="MsoBodyText"><span lang="EN-GB">This document specifies two procedures for determining the decrease in counterforce exerted by a test piece of vulcanized or thermoplastic rubber which has been compressed to a constant deformation and maintained thus at a predetermined test temperature.</span></p> <p class="MsoBodyText"><span lang="EN-GB">The counterforce can be determined either by means of a continuous-measurement system or by a discontinuous-measurement one.</span></p> <p class="MsoBodyText"><span lang="EN-GB">Two test methods are specified, method A and method B. In method A the compression and all measurements of counterforce are made at test temperature and in method B the compression and all measurements of counterforce are made at standard laboratory temperature.</span></p> <p class="MsoBodyText"><span lang="EN-GB">Method A and method B do not give the same results, as in method B the shrinkage of the material from the test temperature to standard laboratory temperature is included in the result.</span></p> <p class="MsoBodyText"><span lang="EN-GB">Two forms of test