ISO/DIS 4658

Acrylonitrile-butadiene rubber (NBR) — Evaluation procedure ISO/DIS 4658

General information

40.60   Close of voting   Jun 25, 2026

ISO

ISO/TC 45/SC 3 Raw materials (including latex) for use in the rubber industry

International Standard

83.060   Rubber

Scope

This document specifies, for acrylonitrile-butadiene rubbers (NBRs):
— physical and chemical tests on raw rubbers;
— standard materials, a standard test formulation, equipment and processing methods for evaluating the vulcanization characteristics.
The mixing preferred method is the single stage mixing with LIM (laboratory internal mixer).

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4658:2020

NOW

IN_DEVELOPMENT
ISO/DIS 4658
40.60 Close of voting
Jun 25, 2026




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