Materials specifically for sponge rubber, ebonite, and O-rings (the latter often governed by JIS B 2401). Classification of Rubber Materials
Typically includes materials like EPDM or Natural Rubber (NR). jis k 6380 pdf
Official copies of the are typically available through authorized standards organizations: Materials specifically for sponge rubber
JIS K 6380 is the primary Japanese Industrial Standard for used across diverse industries, from automotive to chemical processing. from automotive to chemical processing.