Annotation of standard text SAE J1638 :
This SAE Recommended Practice is used for establishing the compression set that could be expected to occur with a thermoset elastomeric hose under securing clamps. It seeks to reproduce the type of indentation caused by the clamps in the wall of a hose. An excessive compression set measured by this method may indicate a hose that could eventually allow leakage of fluid or gas past the clamps in service.
SUBJECT TAXONOMY: Engine cooling systems, Coolants, Hoses
SUBFILE: Automotive
TYPE OF DOCUMENT: Ground Vehicle Standard
Stabilized: Apr 2015 