JIS K 6380

Here’s an interesting, informative write-up on — tailored for engineers, quality control professionals, or anyone curious about Japanese industrial standards for rubber materials.

: The standard typically covers 20 pages and uses a classification system to help users select materials based on their functional and constructional properties. Intertek Inform Classification System

Class A (Non-oil resistant):

Typically includes materials like EPDM or Natural Rubber (NR).

Official Title:

Rubber packing material - Classification of physical properties.