Scuba O-Ring Sizes
If you’re looking to buy replacement O-Rings, stick to FKM (Viton) as the material. If you buy from non-scuba sources, it’s really not that expensive and does last a lot longer.
| SCUBA Application Seal | Name | Gewinde |
|---|---|---|
| Standard DIN Regulator/Valve (Nearly all DIN regulators) Duro: NBR 70/90, FPM 75 | BS1806- 112 | 5/8" |
| Apeks DIN Regulator/Valve Duro: NBR 70, FPM 70 | BS1806- 111 | 5/8" |
| HP Port/Hose Manifold and Manifold Port Plugs Duro: NBR 90, FPM 90 | BS1806- 012 | 7/16" UNF |
| LP Port/Hose (3/8" UNF) Duro: NBR 70, FPM 70 | BS1806- 011 | 3/8" UNF |
| HP swivel Duro: NBR 90, FPM 90 | BS1806- 003 | 1/16" |
If your looking for more details, checkout Scuba Doctor.