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ISO 48-8:2018

Rubber, vulcanized or thermoplastic — Determination of hardness — Part 8: Apparent hardness of rubber-covered rollers by Pusey and Jones method
20 gush 2018

General information

90.93     4 jan 2024

ISO

ISO/TC 45/SC 2

International Standard

83.140.99  

anglisht   frëngjisht  

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Scope

This document specifies a method for the determination of the apparent hardness of vulcanized- or thermoplastic-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 is not the same as that measured by the international rubber hardness test method ISO 48-2, since in this method the rubber immediately adjacent to the indentor is precompressed. The Pusey and Jones indentation value is an inverse measurement of hardness, i.e. the harder the rubber the lower the Pusey and Jones indentation value.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 7267-3:2017

NOW

PUBLISHED
ISO 48-8:2018
90.93 Standard confirmed
4 jan 2024