Description
E801509 – O-ring for 3-way connection NBR 53 × 4.5 mm (set of 2)
Restore a leak-tight seal on Blue Lagoon 3-way unions with this genuine NBR O-ring set. Sized 53 × 4.5 mm, these rings fit the union seats on Spa UV-C and Copper Electrolyzer housings for clean, pressure-safe installs.
- Exact OEM size for Blue Lagoon 3-way unions
- Durable NBR rubber for chlorine/saltwater pools
- Supplied as a matched pair for inlet and outlet
Compatibility
Fits Blue Lagoon 3-way connection sets and housings, including:
- B212014 (50 mm) and B212015 (48 mm) 3-way connections
- B212013 Spa UV-C / Copper Electrolyzer housing
- Spa UV-C PL-S 12/15 W and Spa T5 21 W (U20/Z20)
- Blue Lagoon Copper Electrolyzer assemblies
What’s included
- 2 × O-rings NBR 53 × 4.5 mm (ref. E801509)
Installation tips
- Clean the grooves and mating faces; replace worn nuts and unions if needed.
- Lightly lubricate with silicone grease (do not use petroleum products).
- Tighten union nuts evenly and leak-test after pressurising.
Specifications
- Reference: E801509
- Size: 53 mm ID × 4.5 mm cross-section
- Material: NBR (nitrile rubber)
- Application: Seals for Blue Lagoon 3-way union connections
Good to know
Renewing O-rings whenever you service the quartz sleeve or unions prevents weeping and keeps your UV-C or copper system performing at its best. Matching nuts: 3901045.
