Red Sea Reefer Pipe Connector O-Ring Set — Genuine Sump Plumbing Seals R42187

The Red Sea R42187 O-ring set is the genuine replacement seal kit for the sump pipe connectors of REEFER aquariums. These O-rings keep the fittings between the overflow plumbing and the sump watertight — replacing them restores the original seal during maintenance or a tank move.

What's in the box

Red Sea part number: R42187. Red Sea does not publish the exact number of O-rings included in the set — if you see a count elsewhere, it doesn't come from the manufacturer. Write to us with your REEFER model and we'll check for you before you buy.

Compatibility

Fits: REEFER 170, REEFER 170A, REEFER Peninsula 650, REEFER XL 200, REEFER Peninsula 650 A, REEFER Peninsula 500, REEFER 3XL 900, REEFER XXL 750, REEFER XXL 750-2, REEFER 250, REEFER XXL 750 V3, REEFER XL 300, REEFER XXL 625, REEFER XXL 625 A, REEFER XL 525, REEFER XL 525 V3, REEFER 350 V3, REEFER XL 525 V3A, REEFER 450, REEFER XL 425, REEFER XL 425 V3, REEFER XL 425 V3A, REEFER 170 G2, REEFER 350, REEFER 350 V3A, REEFER 250 V3, REEFER 200 G2, REEFER 250 V3A, REEFER 300 G2, REEFER 250 G2, REEFER 350 G2, REEFER 425 G2, REEFER 525 G2, REEFER 625 G2, REEFER 750 G2 and REEFER NANO.

Complementary products

While you're servicing the cabinet, have a look at the REEFER cabinet hinge set if the doors are getting tired, and at the R42496 retrofit front support for first-generation REEFER XXL 625 and 750 systems.

Frequently asked questions

When should REEFER O-rings be replaced?

Red Sea does not publish a replacement interval. A good habit: inspect the O-rings whenever the sump plumbing is taken apart, and write to us if a fitting weeps despite being properly tightened.

Does this set fit every REEFER?

The compatibility list above covers the classic REEFER, XL, XXL, 3XL, Peninsula, Nano and G2 generations. Check your exact model in the list before ordering — or write to us.

Why buy from ReefSolution

Aquarium ReefSolution is an authorized Red Sea dealer in Laval. Secure delivery across Canada. Free shipping available depending on order amount.