Apeks ID to AS568 O-Rings Standard for Apeks Regulators
ProDive-shop recommends that your Apeks O-rings are installed by an authorized dealer or distributor!
Do not damage the O-ring or the sealing surfaces!
Make sure all parts are clean before assembling!
First stages: US4, DS4, UST, DST, FST (ATX100), FSR (ATX200)
Second stages: T20, TX40/50/100/200, AT20, ATX40/50/100/200
| Apeks ID | AS568 | CS | ID | SCUBA Application |
|---|---|---|---|---|
| AP6403 | 003 | 1/16 | 3/16 | High-Pressure Hose / SPG swivel (less common) |
| AP1299 | 006 | 1/16 | 1/8 | Apeks HP seat (1st stage) |
| AP1154 | 010 | 1/16 | 1/4 | Low-Pressure Hose / 2nd Stage Regulator Cylinder Valve Stem, Apeks crown (2nd stage) |
| AP1409 | 011 | 1/16 | 5/16 | Standard Low-Pressure Port/Hose (3/8 UNF), Apeks adjusting screw (2nd stage), Apeks conical filter (1st stage), Apeks FSR HP crown (1st stage), Power Inflator quick disconnect |
| AP1445 | 012 | 1/16 | 3/8 | High-Pressure Port/Hose (7/16 UNF), Manifold and Port Plugs |
| AP1410 | 013 | 1/16 | 7/16 | Large Low-Pressure Port/Hose (1/2 UNF), Apeks balance plug inner (1st stage) |
| AP1159 | 014 | 1/16 | 1/2 | Standard Yoke Regulator / K-valve, Apeks ATX adjuster screw (2nd stage) |
| AP1267 | 015 | 1/16 | 9/16 | Apeks valve spindle (2nd stage), Cylinder Valve Bonnet Nut |
| AP1438 | 019 | 1/16 | 13/16 | Apeks Venturi (2nd stage), Apeks turret bolt (1st stage) |
| AP1420 | 024 | 1/16 | 1-1/8 | Apeks Turret (1st stage) |
| AP1166 | 111 | 3/32 | 7/16 | Apeks DIN Regulator/Valve, Apeks Yoke spare (2nd stage). Note: Yoke Valves often use BS112 or BS014 |
| AP2041 | 1.7x1 | 1mm | 1.7mm | Apeks shuttle valve (2nd stage) |
| AP5711 | 2.5x1 | 1mm | 2.5mm | Apeks ATX adjuster screw nib (2nd stage) |
| AP1300 | 15x1.5 | 1.5mm | 15mm | Apeks HP balance plug outer (1st stage) |


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