Astralpool / Hurlcon 40mm O-ring - HX, JX, 40mm MPV
Astralpool / Hurlcon 40mm O-ring - HX, JX, 40mm MPV is temporarily out of stock and will ship as soon as it's available.
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Astralpool / Hurlcon 40mm O-ring - HX, JX, 40mm MPV
Astralpool / Hurlcon 40mm O-ring - HX, JX, 40mm MPV is temporarily out of stock and will ship as soon as it's available.
Astralpool / Hurlcon 40mm O-ring - HX, JX, 40mm MPV
Genuine Astralpool / Hurlcon 40mm union O-ring, part number 75109. Commonly used on the inlet and outlet unions of selected Astralpool and Hurlcon gas pool and spa heaters, including HX and JX series heaters.
- Physically Stocked, unlike most "drop-shipping" websites.
- Shipped from VIC, NSW, WA, QLD
Suits selected Astralpool / Hurlcon heaters
- Hurlcon / Astralpool HX 70 gas heater
- Hurlcon / Astralpool HX 120 gas heater
- Hurlcon / Astralpool HX 150 gas heater
- Hurlcon / Astralpool JX 130 gas heater
- Hurlcon / Astralpool JX 160 gas heater
Also used on selected 40mm Astralpool / Hurlcon applications
- 40mm barrel unions
- 40mm union fittings on selected Astralpool / Hurlcon equipment
- Selected E-Series sand / media filter unions
- Some FG Fibreglass, RX and E-Series media filter 40mm union applications
- Some older Hurlcon / Astralpool 40mm multiport valve union applications
Please check the part number and measurements before ordering. Astralpool and Hurlcon used several similar-looking O-rings across heaters, filters, unions and multiport valves, so matching by size alone is not always enough.
Approximate measurements
- Outside diameter: approx. 66mm
- Inside diameter: approx. 58mm
- O-ring thickness / cross-section: approx. 4mm
Common search terms
Astralpool 75109 O-ring, Hurlcon 75109 O ring, HX 70 union O-ring, HX 120 union O-ring, HX 150 union O-ring, JX 130 union O-ring, JX 160 union O-ring, Astral 40mm union O-ring, Hurlcon 40mm union O-ring, E-Series filter O-ring, Astralpool heater union seal.
Related spare parts
HX Heater Spare Parts
JX Heater Spare Parts
Genuine part number: 75109
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:
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75109