Seal Plate Gasket Failures

Dilbydog

Silver Supporter
Jan 14, 2018
66
Las Vegas, NV
I have a older Hayward Northstar pump that keeps eating seal plate gaskets. Generally, the gasket will last a season, and when the gasket had previously failed there would be a loss of vacuum once the pump shut down, but no loss of water while the pump was operating. Fast forward to yesterday, when I found that the pump lost prime. I re-primed the system and started the pump. As soon as pressure started to build, a high pressure stream of water erupted from the 12 o'clock position of the seal plate housing. When I pulled the motor and seal plate from the housing I found the seal plate gasket in two pieces. I'd like to limp this pump through this summer and replace the pump and my aging automation system during the off season. Any idea's on why these gaskets are failing with this level of consistency? I've used both Hayward brand and third party gaskets with similar results.

Thank you,
Dill
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
33,118
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
I'm a bit stumped as to why your pump would be going through gaskets like that. Not sure if it's a mechanical heat issue, design flaw, or something else. @JamesW have you heard of this before?
 

JamesW

TFP Expert
Mar 2, 2011
27,176
Probably time for a new pump.

Do you have pictures of everything?

Are you lubricating the gasket?
 

Dilbydog

Silver Supporter
Jan 14, 2018
66
Las Vegas, NV
Probably time for a new pump.

Do you have pictures of everything?

Are you lubricating the gasket?
Hi James… I agree it’s time for a new pump. I’m trying to figure out what I can do with my Caretaker system so I don’t need such a hog of a pump. As for photos, unfortunately I threw the gasket away in disgust. I have noticed that previous leaking gaskets had a bit of a candy cane stripe in them, like they rolled or twisted. Yes, I do lube the gaskets.
Just threw a new gasket on.. fingers crossed it lasts more than a month.
 

JamesW

TFP Expert
Mar 2, 2011
27,176
NorthStar pumps are junk.

The locking mechanism might not be locking and the drive end might be backing out.
 
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