Waterway 805-0339 bulkhead coupler o-ring for Crystal Water filtersWaterway Bulkhead O-Ring for Crystal Water Filters, 805-0339 In stock$1099
Waterway 805-0339 bulkhead coupler o-ring for Crystal Water filters
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Waterway Bulkhead O-Ring for Crystal Water Filters, 805-0339

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$1099
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Quick overview

  • Waterway part 805-0339 The factory o-ring for the Crystal Water bulkhead coupler.
  • Cartridge and DE Listed for the Waterway Crystal Water cartridge filter and the Crystal Water DE filter.
  • Bulkhead coupler seal Seals where the plumbing passes through the filter tank wall.
  • A leak here looks worse than it is Water tracking down the side of a filter tank usually starts at a hardened bulkhead o-ring.
  • Replace on reassembly Once compressed, an o-ring will not reliably reseal after the joint has been broken.
  • Sold individually One o-ring.
Full description and specifications ↓

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Product details

Waterway 805-0339 is the o-ring for the bulkhead coupler on Crystal Water filters. It is listed for both the Crystal Water cartridge filter and the Crystal Water DE filter.

Where it sits

The bulkhead coupler is the fitting that takes plumbing through the wall of the filter tank. Everything the pump pushes through the filter is held back at that pass through by this one o-ring. When the rubber goes hard, flattens or nicks on reassembly, water starts tracking down the outside of the tank, and it is easy to blame the tank clamp or the lid when the leak is actually here.

Fitting

Clean the groove and the mating face before the new ring goes in, and give it a light film of a silicone based o-ring lubricant. Do not reach for petroleum grease: it swells the rubber and shortens the life of the seal. Once a joint has been broken, fit a new ring rather than putting the old one back.

Specifications
Brand Waterway
Manufacturer part number 805-0339
UPC 806105194732
Type Bulkhead coupler o-ring
Part type Pool filter part
Fits Waterway Crystal Water cartridge filter and Crystal Water DE filter
Sold as Each
Shipping weight 0.05 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which filters does it fit?
It is listed for the Waterway Crystal Water cartridge filter and the Crystal Water DE filter, at the bulkhead coupler.
What is a bulkhead coupler?
It is the fitting that carries the plumbing through the wall of the filter tank. The o-ring is what seals that pass through so water stays inside the tank.
Should I lubricate it?
A silicone based o-ring lubricant is standard practice on pool o-rings. Avoid petroleum greases, which swell and destroy the rubber.
Do I get more than one?
No. This is a single o-ring.
Ask your own question