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ISO/DIS 4658

Acrylonitrile-butadiene rubber (NBR) — Evaluation procedure

General information

40.00     Jan 30, 2026

ISO

ISO/TC 45/SC 3

International Standard

83.060  

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
40.00 DIS registered
Jan 30, 2026