O-Ring S Type Size List

O-Rings in the S Series (JIS B 2401 Standard) are designed for special-purpose sealing, where space is limited or non-standard dimensions are required. These rings are often used in compact equipment or precision instruments requiring fine sealing lines.

🔧 What Is the JIS S Series O-Ring?

  • “S” stands for Special Purpose

  • Part of JIS B 2401, a Japanese O-Ring standard

  • Dimensions use metric units (mm)

🧰 Typical Applications

  • Compact pneumatic systems

  • Miniature valves and pumps

  • Precision electronics sealing

  • Special space-constrained designs

  • OEM product development

🏭 Why Choose CNL O-Rings?

  • Full range of JIS S Series O-Rings

  • Materials: NBR, FKM (Viton®), EPDM, Silicone

  • Precision manufacturing & global export standards

  • RoHS / REACH compliant materials

  • OEM & custom molding support available