Jis K 6380 Pdf =link= ✯
For professional use, you should purchase the PDF directly from the JSA e-store or authorized resellers like ANSI (American National Standards Institute) or Techstreet. The cost (typically $50–$150 USD) is negligible compared to the liability of a failed gasket.
Their Rubber Sheet Catalog includes specifications for CR, NBR, and Silicone sheets categorized by JIS K 6380 performance classes. jis k 6380 pdf