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Astralpool Hurlcon Astralpool Gas Heater Seal & Bypass Kits - MX 125 150 200 300 400

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Seal Kit Version - Click Box, Not Image

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Astralpool Hurlcon Astralpool Gas Heater Seal & Bypass Kits - MX 125 150 200 300 400

Bypass & Barrel Union Seal & Oring service kit. Fixes common leaks on Hurlcon and Astralpool gas heaters. Suits all MX Gas Heaters for Hurlcon and Astralpool heaters. Genuine OEM parts.

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

- Shipped Fast from NSW, VIC, QLD, WA.
- Can be picked up from our Factory & Showroom at 10 Industry Blvd, Carrum Downs, Vic

These parts fit the following Hurlcon and Astralpool gas pool heaters:

  • MX 125 / MX 150 / MX 200 / MX 250 / MX 300 / MX 400 / MX 500

The Bypass & Seal Kit Comes with:

  • 4. - 1x Plunger for Bypass Assembly
  • 5. - 1x O-ring for Bypass Assembly
  • 6. - 1x Disc for Bypass Assembly
  • 2x Split Pins

The Complete MX Seal Kit Comes with:

  • 4. - 1x Plunger for Bypass Assembly
  • 5. - 1x O-ring for Bypass Assembly
  • 6. - 1x Disc for Bypass Assembly
  • 9. - 2x O-rings for Barrel Union
  • 1x Bypass Spring
  • 2x Split Pins

76025, 70007, 76026, 75109, 70003,71922,76025, 70007, 76026, 71922, 76030, 70002

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

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BypassKit w/ Pins - no Spring

Important Information
Brand Information

We are an authorised dealer, retailer, and/or service & warranty agent for many leading brands, including: Fluidra (AstralPool, Zodiac, Hurlcon), Aeware, Air Supply of the Future, Aqua-Flo, Balboa, Celsior, CG Air, CMP, Custom Moulded Products (CMP), Darlly, Davey, Del Ozone, Dontek, Edgetec, Emaux, Filtrite, Gecko, Goulds, Harwil, Henden, Herga, Honeywell, HydroAir, HydroQuip, ITT, Jandy, Joyonway, Laing, Len Gordon, Lo-Chlor, LX, LX Whirlpool, Magic Plastics, Magnum, Monarch, Onga, Pentair, PoolSystems, Presair, Raypak, Reemay, Rheem, Rising Dragon, S&P, Sensaheat, Spa-Craft, Spa-King, SpaNet, Spa-Quip, SpaTex, SpaZazz, Tecmark, Therm Products, Thermcore, Waterco, Waterway, Weld-On, Whirlpool, Xylem, and others.

We also sell parts for many spa and swim spa brands, including parts to suit Alpine Spas, Artesian Spas, AquaPulse Spas, Balboa spas, Bullfrog Spas, Caldera Spas, Canadian Spa Company, Cedar Spas, Chinese import spas, Coast Spas, Costco spas, Cyclone Spas, Davey spas, Decina, Designer Spas, Dimension One Spas, eBay spas, Endless® Spas, Fastlane Pools, Fisher Spas, Gecko spas, Halo Spas, H2O Spas, H20 Spas, Heritage Spas, HotSpring Spas, HydroQuip spas, Impact Spas, Jacuzzi, Just Spas, Just Swim Spas, LA Spas, Lanark Spas, Leisurite Spas, Maax Spas, Monarch Spas, MySpa, O2 Spas, Oasis, Sapphire Spas, Sapphire Swim Spas, SCS Spas, Signature Spas, Silver Spas, Spa Industries, Spa-Quip spas, SpaNet spas, Spas Direct, Sundance Spas, Sunrans, SwimEx, Trueform Spas, Tuff Spas, Urban Pool, Vortex®, Vortex® Swim Spas, and many others.

Important Information Links

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  • Handy PVC Plumbing Size Info

    Plumbing sizes can be confusing. Pressure PVC pipe use nominal sizes - the size is simple a name, not the measured dimension. This convention is used across most pool and spa systems so that pipes and fittings remain compatible.

    • 50mm / 2" = ~60-61mm OD
    • 40mm / 1.5" = ~48mm OD
    • 25mm / 1" = ~33-34mm OD

  • Plug Types & Styles

    Common plug types found on spa equipment are AMP, Mini JJ, C38 (Aus 3-pin), Gecko in.link, etc. For more information please click here.

    • AMP plugs are the most common type used for over 20 years.
    • Many Mini J&J plugs are no longer available and must be modified.
    • C38 is the common Australian 3-pin plug found in normal household outlets.
    • Gecko (Aeware) in.link style plugs are no longer available and must be modified.
General Information & Disclaimers

Many products we supply are OEM-supplied and may not include retail packaging, printed instructions, or accessories. Refer to the product listing for details, or contact us if unsure.

Product images are for illustration only. Actual items may vary due to manufacturer changes, updates, and other variations. Images may show a full assembly, a partial assembly, or a specific component only. They are provided for identification purposes and do not by themselves define what is included. Please read the title and description carefully.

All products must be installed and used by qualified and experienced persons in accordance with applicable Australian standards and manufacturer requirements. We are a parts supplier, similar to an electrical, plumbing, or automotive parts supplier. We sell parts, but cannot always provide exact installation, troubleshooting, or system design advice. Buyers are expected to know what they are doing or use a qualified professional.

Contact us before ordering if your order is urgent, to confirm availability before purchasing.

® Trademark Information

All trademarks, brand names, and logos displayed on this website are the property of their respective owners. Heater & Spa Parts is an independent Australian supplier of replacement parts and accessories. Use of trademarked names, logos, and brands is for identification and compatibility purposes only, unless otherwise stated.

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