AstralPool 78104 O-Ring for 65mm BX/FX Unions & VX Cell Housing

Genuine AstralPool 78104 replacement O-ring

The AstralPool 78104 O-ring is a genuine replacement seal for selected 65 mm pump tail unions and VX series chlorinator electrode housings. Match your existing seal, equipment model and union size before ordering.

Product details

• Product number: 78104.
• Genuine Astral replacement part.
• Listed O-ring size: 95 mm × 5 mm.
• O-ring thickness: 5 mm.
• Pump union size: 65 mm, not 50 mm.
• Shown as part number 8 in the original pump parts reference.

Compatibility

Suitable for selected BX, FX, CT, CTX, P280, P300, P320, P600 and Eco series pump configurations fitted with the matching 65 mm union. Compatibility depends on the union fitted, not just the pump model.

Also listed for VX series electrode housings, where the O-ring fits around the cell. Compare your existing seal and confirm part number 78104 before purchase.

Frequently asked questions

Is 65 mm the O-ring's measured diameter?

No. The 65 mm designation refers to the pump union size. The listed O-ring size is 95 mm × 5 mm.

Will this fit a 50 mm pump union?

No. This listing is for the 65 mm union O-ring. The original product information directs customers requiring a 50 mm union O-ring to part 70003.

Does it suit Astral BX and FX pumps?

It suits selected BX and FX pumps with the matching 65 mm union. Check the union size and existing O-ring before ordering.

Can it be used in a VX chlorinator?

Part 78104 is also listed for VX series electrode housings as the O-ring around the cell. Confirm that your housing uses this part.