Description
Blue Lagoon O-ring EPDM 59.99 × 2.62 mm – 3902110
Restore a watertight end-cap seal on your Blue Lagoon unit with this genuine EPDM O-ring. Sized precisely at 59.99 mm × 2.62 mm, it fits the lamp/quartz head on multiple Blue Lagoon UV-C reactors and ProfiHeater models to stop drips and protect internal components.
- Exact OEM size for reliable end-cap sealing
- EPDM material resists pool chemicals and heat
- Quick, low-cost fix to stop weeping connections
Compatibility
Used across the Blue Lagoon range, including:
- Tech UV-C (16/40/75/130 W)
- Timer UV-C (40/75/130 W) and Signal UV-C (40/75/130 W)
- Xpose UV-C 42 W and Xpert Duplex UV-C (80/140 W)
- ProfiHeater 1/2/3 kW
Pairs with
- End caps: F990107 (32 mm ABS black), F990113 (32 mm ABS blue)
- Retaining nut: B290010 (70 × 33.5 mm ABS blue)
- Quartz sleeve O-rings (separate set): E800912 (3 pcs)
Installation tips
- Clean the groove and mating faces; remove scale and debris.
- Lightly lubricate with silicone grease (never petroleum-based) and seat without twisting.
- Hand-tighten the retaining nut evenly; leak-test after pressurising the line.
Specifications
- Reference: 3902110
- Material: EPDM
- Dimensions: 59.99 mm ID × 2.62 mm cross-section
- Application: End-cap sealing ring (lamp/quartz head)
Good to know
Renew end-cap O-rings whenever you replace the quartz sleeve or service the head. Fresh seals maintain UV performance and help prevent moisture ingress.
