💧 O-Ring, 2-9/16″ ID, 3/32″ Cross Section, Generic
Manufacturer part number AS-208H. It is listed for the equipment shown below, so check the model on your own unit against that list. If your old part carries one of the cross-reference numbers further down, this is listed as its alternative.
📏 Specifications
| Specification | Value |
|---|---|
| Manufacturer part number | AS-208H |
| Part Type | O-ring |
| Cross Section | 3/32″ |
| Inside Diameter | 2-9/16″id |
| Heater Union Part Type | O-Ring |
| Catalog description | O-Ring, 2-9/16″ ID, 3/32″ Cross Section, Generic |
✅ Listed for
- Pentair Purex CFM Cartridge Filter
- Center/Side Discharge 48 Frame Balboa Vico Ultima Series
🔄 Cross-reference part numbers
These part numbers are listed as alternatives for this part.
| Brand | Part number |
|---|---|
| Waterway Plastics | 805-0145 |
These o-rings now follow 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 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 #25 on the DE Filter, Waterway, Crystal Water; item #3 on the Bracketless 56 Frame 60Hz, J-LX, J-LXL, J-400, J-300; item #4 on the Fixed Bracket 48 Frame 60Hz, J-300, J-200; item #4 on the Bracketless 48 Frame 60Hz, J-300, J-200; item #4 on the TheraMax/TheraFlo Pump Components (1999+) exploded parts diagrams.
🔧 DE Filter, Waterway, Crystal Water – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | DE Grid Set, Unicel, 48 sqft, 7 Full + 1 Half |
| – | Split Nut, Waterway DE Filter/Heaters, 2-1/2", PVC |
| – | Split Nut, Waterway DE Filter/Heaters, 2-1/2", PVC, Bagged |
| – | _570-0036-07 |
| – | _570-0048-07 |
| – | Grid DE,SET, Pleatco, 11" x 30" for 60sqft,(7 Full + 1 Half) |
| – | Grid DE,SET, Pleatco, 11" x 24" for 48sqft,(7 Full + 1 Half) |
| – | Grid DE,SET, Pleatco, 11" x 18" for 36sqft,(7 Full + 1 Half) |
| – | DE Grid Set, Pentair/Hayward, (7+1) 30" for 60 sqft Filters |
| – | DE Grid Set, Pentair/Hayward, (7+1) 24" for 48 sqft Filters |
| – | DE Grid Set, Pentair/Hayward, (7+1) 18" for 36 sqft Filters |
| 33 | 16-270-W015K33 |
| 32 | 16-270-W015K32 |
| 31 | Gasket, Waterway CrystalWater, 2-1/2", Bulkhead Fitting |
| 30 | Bulkhead Fitting, Waterway CrystalWater, 2-1/2" |
| 29 | O-Ring, Buna-N, 3-1/4" ID, 3/16" Cross Section, Generic |
| 28 | Drain Plug Assy, Waterway Crystal Water, W/O-Ring, Old Style |
| 27 | Tank Body, Waterway CrystalWater |
| 26 | Elbow, Waterway CrystalWater, 2-1/2", Long |
| 25 | O-Ring, 2-9/16" ID, 3/32" Cross Section, Generic ◀ this part |
| 24 | 16-270-W015K24 |
| 23 | 16-270-W015K23 |
| 22 | 16-270-W015K22 |
| 21 | 16-270-W015K21 |
| 20 | Manifold, Waterway CrystalWater, with Air Relief |
| 19 | Manifold Nut, Waterway CrystalWater |
| 18 | Air Relief, Waterway CrystalWater |
| 17 | Clamp Wrench, Waterway CrystalWater |
| 16 | Clamp Spring Assembly, Waterway CrystalWater Filters |
| 15 | O-Ring, Waterway Crystal Water, Tank Body |
| 14 | 16-270-W015K14 |
| 13 | 16-270-W015K13 |
| 12 | 14-270-1121 |
| 11 | Air Relief Valve Plunger, Waterway CrystalWater |
| 10 | Air Relief Valve Spring, Waterway CrystalWater |
| 9 | 16-270-W015K9 |
| 8 | Handle, Waterway CrystalWater, Air Relief Valve |
| 7 | 16-270-W015K7 |
| 6 | 16-270-W015K6 |
| 5 | Air Relief Body, Waterway CrystalWater |
| 4 | Rubber Boot, Waterway CrystalWater, Pressure Gauge |
| 3 | 16-270-W015K3 |
| 2 | Bezel Assembly, Waterway CrystalWater, Pressure Gauge |
| 1 | 16-270-W015K1 |
🔧 Exploded diagram and parts
This part belongs to the DE Filter, Waterway, Crystal Water assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
Grid DEs
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
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Split Nut, Waterway DE Filter/Heaters, 2-1/2", PVC, Bagged | 400-5271B | In stock | $17.64 | Add to cart |
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Grid DE, SET, Pleatco, 11" x 30" for 60sqft, (7 Full + 1 Half) | PFS3060 | Available to order | $202.20 | |
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Grid DE, SET, Pleatco, 11" x 24" for 48sqft, (7 Full + 1 Half) | PFS2448 | Available to order | $274.78 | |
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Grid DE, SET, Pleatco, 11" x 18" for 36sqft, (7 Full + 1 Half) | PFS1836 | Available to order | $129.66 |
Complete multiport valves
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
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Multiport Valve, Waterway Side Mount, 2" Slip, with Unions | WVD002 | Available to order | $296.44 | Add to cart |
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Multiport Valve, Waterway Side Mount, 2"fpt, w/Unions | WVD001 | 4 in stock | $221.59 | Add to cart |






































