Astralpool Hurlcon Astralpool HX JX WX MX Bypass Plunger O Ring Seal

Astralpool Hurlcon Astralpool HX JX WX MX Bypass Plunger O Ring Seal

Bypass plunger o-ring seal for Hurlcon & Astral gas heaters. Suits all HX, JX, MX, WX gas heaters. They have been Yellow, Gray, and Black over the years. With age, they often softened or totally broke down. Should be replaced every 3-years.

• Physically Stocked, unlike most "drop-shipping" websites.
• Shipped from VIC, NSW, WA, QLD

• HX Gas Heaters: HX 70, HX 120, HX 150
• JX Gas Heaters: JX 130, JX 160
• MX Gas Heaters: MX 125, MX 150, MX 200, MX 250, MX 300, MX 400
• WX Gas Heaters: Wilton WX 75, WX 120

Important Notes:

• We highly recommend replacing the entire bypass, as they wear out over time.
• Stainless Steel Split Pins listed here.

Manufacturer Catalogues, Diagrams & Part Numbers

Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues: Astralpool Catalogue 2026 | Zodiac Catalogue 2026

Interactive Parts Diagrams

Find this part on our interactive heater parts diagrams — each one opens the full exploded view and parts list:

• Astralpool / Hurlcon HX 120 Gas Heater — Diagram & Parts