ISO 188

Heat Aging Of Rubber

Specifies accelerated ageing or heat resistance tests on vulcanized or thermoplastic rubbers. Two methods are given:

1. Method A: air-oven method using a cell-type oven or cabinet oven with low air speed and a ventilation of 3 to 10 changes per hour;
2. Method B: air-oven method using a cabinet oven with forced air circulation by means of a fan and a ventilation of 3 to 10 changes per hour.

Source: https://www.iso.org/standard/57738.html