Product Information
Description
This PacFab diffuser O-ring is compatible with Challenger Waterfall systems. It is specifically identified as O421, with MPN 355331Z.Additional Info
| Category | Parts O-Rings & Gaskets |
| SKU | PST-355331Z |
| MPN | 355331Z |
| Manufacturer | Pentair |
| Weight | 0.1 lb |
Let customers speak for us
Came in great condition my kid loves it, fit perfect hes 6 and got a medium.
Order received. Thank you
This is a well built spa light with excellent cables and excellent customer service. Highly recommend
New flow switch worked perfect. Much cheaper than other sites. Arrived on time.
Good price works great!
Dog chewed pool robot cord end. Ordered this fix it. Delivery was a little slow and I think some instructions should have been included as should have been a tiny allen wrench needed to tighten the wires into the plug. I got it done but think most homeowners would have a problem doing it. Other than these issues, the plug works fine and was much cheaper than buying a whole new cord.
Had a minor issue with pricing of a separate part in my order, but the sales team was responsive and reasonable, and worked with me to come to a mutually agreeable solution. In a world where character and reason has become the exception rather than the norm, they stand by their word and were committed to finding a fair solution.
I highly recommend them, and will look to them first in the future when searching for pool and spa products. Thanks, Sal and team!
I really like it
The part fit perfectly. Shipping was quick. Would definitely purchas from PST Pool Supplies again in the future.
Ordered this as I just had a leak and replaced it with a complete flow switch and valve . If the valve body cracks again, at least I am prepared. Thanks!
Awesome product and handling. It fit where my IC40 was easily.
We found the hard to find parts here, and they were delivered all the way to North Carolina way ahead of the initial delivery date. The pump runs Great and Everyone is enjoying the Pool over the Labor Day Holiday. Thank you again PST Pool Supply for your Excellent service..
Came here looking for a replacement flow switch and housing. My last one that I purchased on Amazon (cheap Chinese ****) lasted only 9mo before leaking severely in 2 places. I noticed a quality difference in the replacement I received from PST. I expect this one to far exceed the prior one. It installed quickly and works perfectly. Best of all, the leaked are gone.
I bought a cheap flow sensor from Amazon last year and it cracked and leaked in several places after just 9 mo of service. I replaced it with this model from PST and I noticed a quality difference on the plastic housing. I’m expecting this to long outlast the prior one. Thanks PST.
Unfortunately it was the wrong size I'll have to take a picture of it but it looked just like that Hayward light.
