JIS B 2401 is a Japanese Industrial Standard for O-Ring sizes.
This standard, often referred to as “Japanese Metrics”, is organized into four series, based on their application.
The O-Rings in each section have ascending number codes to complete the size reference.
- JIS: P Series – Moving (dynamic)
- JIS: G Series – Fixed (static)
- JIS: S Series – Special Sizes
- JIS: V Series – Vacuum Flange
- All JIS Sizes – Sorted by Size
Material: Nitrile Rubber 90 Shore
G25 - ID 24.4mm x CS 3.1mm
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