Describes method for determining the apparent hardness of vulcanized rubber roller covers, expressed as the Pusey and Jones indentation value. The Pusey and Jones plastometer apparatus is used to measure the depth of indentation of an indentor under a specified force into the surface of the rubber. The indentation value should not be confused with hardness as measured by the international rubber hardness test. Covers definition, references, time-interval between vulcanization and finished grinding, and testing, conditioning and temperature of test, apparatus, procedure, expression of results and test report.

BS ISO 7267-3 : 2017