Horizon is now utilizing the AS568A O-Ring standard used by the O-Ring industry in order to bring a standardized approach to the pool and spa industry. The current active Horizon part number for an o-ring is 90-423-5xxx, where xxx represents the AS568A designation. This designation ranges from -001 thru -932, in order of smallest to largest first by cross section then by diameter.
Exploded parts diagrams: This part is shown as item #11 on the Pent Am Prod Bronze Pump; item #9 on the Vico UltraFlo Pumps; item #10 on the Balboa Vico Ultima Series, Center/Side Discharge, 48 Frame exploded parts diagrams.
🔧 Pent Am Prod Bronze Pump – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Go-Kit 20, American Ultra-Flow/Bronze Pump |
| 21 | 34-110-W003K21 |
| 19 | 34-110-W003K19 |
| 18 | Bolt, Pentair American Products Bronze, Volute, 20 x 1-3/4" |
| 17 | Knob, Pent Am Prod UltraFlow/Bronze, Clamp Ring |
| 16 | Washer, Pentair AmProd UltraFlow/EQ Series, Flat, 1/4" |
| 15 | Bolt, Pentair American Products Bronze, Clamp Ring |
| 13 | Trap Body Assembly, Pentair American Products Bronze |
| 12 | Drain Plug, Pentair American Products, with O-Ring, 1/4" |
| 11 | O-Ring, 5" ID, 3/32" Cross Section, Generic ◀ this part |
| 10 | Screw, Pent Am Prod Bronze, Impeller, 10-24 x 5/8" |
| 9 | Screw, Pent Am Prod Bronze,Pump Stand, 6 x 5/8" |
| 7 | 34-110-W003K7 |
| 6 | 34-110-W003K6 |
| 5 | Gasket, Pentair Bronze/UltraFlow, Volute, 2-1/2"ID, 3-1/2"OD |
| 4 | 34-110-W003K4 |
| 3 | Trap Lid, American Products Bronze, Val-Pak, Generic |
| 2 | 34-110-W003K2 |
| 1 | O-Ring, 6-1/2" ID, 1/4" Cross Section, Generic |


















