This International Standard specifies performance require-ments and test methods fordiaphragm gaskets of hydraulic brake master cylinder reservoirs to be used on road vehicles; these gaskets provide a seal and protection from water and contamination from external sources.
SIS SS-ISO 4929:1979 history
1979SIS SS-ISO 4929:1979 Road vehicles — Diaphragm gaskets for hydraulic brake master cylinder reservoirs using a non-petroleum base hydraulic brake fluid