JIS K 6380 is a Japanese Industrial Standard titled "Testing methods for rubber and plastics hoses and hose assemblies" or, in some industrial contexts, related to "Gaskets and packing materials for general use." (Note: Users should verify the exact revision, as JIS K 6380 historically covers rubber packing and gasket sheets for flanged joints.)
The standard specifies the requirements for materials used to prevent leakage between static mating surfaces. It classifies gasket sheets based on their composition (e.g., asbestos-free, synthetic rubber, or fiber-reinforced) and defines their physical properties, including:
A jis k 6380 pdf typically includes detailed tables, test method references, and dimensional charts that are indispensable for quality control.
Finding an official, paid copy of JIS K 6380 (original Japanese or English translation) isn’t as simple as Googling a free PDF. JIS standards are copyrighted by the Japanese Standards Association (JSA). While you might stumble upon scanned older editions (e.g., 1995 or 2004 revisions) on engineering forums, for professional use you should purchase the latest version via: jis k 6380 pdf
🛠️ Pro tip: If you’re reverse-engineering a hose assembly, check the revision year. JIS K 6380 was updated in 2004 and reconfirmed several times — but some older equipment still references the 1995 edition.
If you cannot find the exact jis k 6380 pdf you need, consider these related standards:
However, note that none of these are direct substitutes. Japanese OEMs almost always require JIS K 6380 specifically. JIS K 6380 is a Japanese Industrial Standard
You can purchase the official PDF from the following authorized sources:
IHS Markit / Techstreet:
To help you understand if this standard applies to your project, here are typical clauses found in a legitimate jis k 6380 pdf (based on common gasket-related versions): A jis k 6380 pdf typically includes detailed
This standard is the Japanese equivalent of the international standard ISO 48.
Relationship to ISO 48: JIS K 6380 is largely harmonized with ISO 48 (Rubber, vulcanized or thermoplastic — Determination of hardness). If you are looking for technical specifications for a project, referring to ISO 48 will often provide the same testing parameters.
Follow these steps to legally acquire a jis k 6380 pdf:
Warning: Avoid sites that offer the PDF for "free" in exchange for your email address; these are often data harvesting scams.
The standard defines hardness not just as "resistance to indentation," but specifically by the relationship between the indentation depth and the force applied.