O-Rings
JIS B2401 O-Rings — P, G, S & V Series
JIS B2401 is the Japanese Industrial Standard for O-Rings, defining four separate series: P (general purpose dynamic/static), G (fixed/static applications), S (vacuum service) and V (vacuum, larger sizes). Japanese and Korean machinery, automotive OEMs and electronics equipment frequently reference JIS B2401 sizes. FITCO supplies all four series in NBR, FKM, EPDM and Silicone.
| Series | CS Range | Application |
|---|---|---|
| P-Series | ~1.9–8.4 mm CS | General purpose dynamic and static sealing |
| G-Series | ~3.1–5.7 mm CS | Fixed/static groove sealing |
| S-Series | ~1.5–2.0 mm CS | Vacuum system sealing — small cross-sections |
| V-Series | ~4.0–10.0 mm CS | Vacuum system sealing — large cross-sections |
JIS B2401 O-Rings use their own size designation system (e.g. P-22, G-45, S-8). Send your JIS size code and we will confirm the equivalent FITCO O-Ring with ID, CS and OD in millimetres.
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O-Ring manufacturer India since 1995. Send your standard, size and quantity for a fast quote.