| 1 | Discontinued | Lock Ring Assembly, Astral 2500 Terra & Cel Filter | 18225R0300 |
| 1 | Discontinued | Lock Ring Assembly, Astral 2500 Terra & Cel Filter | 18224R0600 |
| 2 | 17-250-1002 | Ring Lock, Astral 2500 Terra & Cel Filter | 18111R0006 |
| 2 | 17-250-2204 | Ring Lock, Astral 2500 Terra and Cel Filter | 4404210403 |
| 3 | 90-250-1018 | O-Ring, Buna-N, Astral, Pressure Gauge | 722R0100025 |
| 4 | 17-250-1000 | Air Relief Plug, Astral Pool, With O-Ring | 4404210304 |
| 5 | 17-250-1015 | Pressure Gauge KIt, Astral Terra/Cel Cartridge Filter | 4404210303 |
| 6 | 90-250-1002 | O-Ring, Buna-N, Astral, 2500 Terra & Cel Filters | 4404210302 |
| 7 | 17-250-1004 | Alignment Cone, Astral 2500 Terra & Cel Filter | 18111-0401 |
| 8 | Discontinued | O-Ring, Astral 2500 Terra/Cel Cartridge Filter, Drain Plug | 722R0500035 |
| 8 | 90-423-5226 | O-Ring, 1-15/16" ID, 1/8" Cross Section, Generic | |
| 9 | Discontinued | Drain Cap, Astral Cel Cartridge Filter, w/ Gasket | 4404210309 |
