Waterway O-Ring/Gasket 711-4030
This O-Ring/Gasket is manufactured for Dynasty Spas by Waterway. Designed, Engineered & Manufactured in the U.S.A. Waterway Plastics is proud to design, engineer and produce our quality line of products right here in the USA, using only premium NSF Approved materials & meeting all Certifications and Standards, at our 460,000 sq. ft. facility in Oxnard, CA. Waterway, committed to innovation & excellence since 1973.
- 2″, (2-3/16″ID x 2-7/8″OD x 1/8″Thick)
Additional Information
| Inside Diameter | 2-3/16" |
| Outside Diameter | 2-7/8" |
| Type | Standard |
| Spa Brands | Dynasty Spas |
Alternate Part Numbers
- 2-05-0101
- 711-4030B (Waterway)
- 10863 (Dynasty)
- 90-423-1007
- 10863
- 711-4030
Exploded parts diagrams: This part is shown as item #13 on the Delta UV, E/ES Series UV Sanitizer/Clarifier System; item #8 on the Hydro-Quip HeatMax Electric Pool & Spa Heater, 5.5kW/11.0kW exploded parts diagrams.
🔧 Delta UV, E/ES Series UV Sanitizer/Clarifier System – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| 13 | O-Ring/Gasket, Waterway 2", Heater ◀ this part |
| 12 | Cushion, Bulb, Delta UV, E/ES Series Lamps |
| 11 | Tail Piece, Delta UV, 2" |
| 10 | Gasket, Compression, Delta UV, Quartz Tube |
| 9 | 42-187-W001K9 |
| 8 | 42-187-W001K8 |
| 7 | 42-187-W001K7 |
| 6 | Pressure Gauge, Delta UV |
| 5 | Tailpiece, 2"mbt x 1-1/2"s/2"spg, w/Split Nut, Heater |
| 4 | 42-187-W001K4 |
| 3 | Ballast, Delta UV, Multi Volt, E/ES/EP 20 & 40 |
| 2 | 42-187-W001K2 |
| 1 | 42-187-W001K1 |







