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Review on EcoPure EPWO4 Premium Housing System: NSF Certified & Built for Superior Performance by Tara Gardner

Revainrating 5 out of 5

Here is the o-ring size

5mm x 138mm (NBR) Metric Buna-N 70 Duro O-ring It costs about $2 each. They even fit better than the ones that come with them. The replacement o-ring that EcoPure sells is oversized, overpriced, and comes with two (2) o-rings that are bad.

Pros
  • Decent Performance
Cons
  • Crumpled