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Thread: Hayward Northstar coupling o-rings

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    Hayward Northstar coupling o-rings

    I have a northstar filter pump and bought new orings to take care of leaks I had in the suction and discharge coupling and they now leak worse than they did before. Is there a fatter o-ring that I can install?
    Sandra in Indy

    IG kidney shape, NEW* vinyl liner-2010
    approx 26,000 gal
    StaRite Sys 3 cartidge filter, inline chlorinator
    gas heater
    looploc mesh cover

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    Join Date
    Feb 2008
    Location
    Milford, CT
    Posts
    333

    Re: Hayward Northstar coupling o-rings

    Are the new o-rings the correct parts?

    Knock on wood, Ive never had a leak from my Northstar inlet and outlet o-rings. Are you tightening the quick connects enough? Any stress on the inlet/outlet because of the plumbing being slightly out of line?

    When I store the pump after the season I coat the o-rings in silicone lube and then put them in a zip lock bag and store them hanging on a wall. They dont get distorted, they dont dry out, and they are ready to go for the next season when it arrives.

    -Chris
    22K IG vinyl, .5HP Northstar pump, S244T filter, AutoPilot Digital w/SC-48 cell

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    Re: Hayward Northstar coupling o-rings

    The o-rings I bought are the ones shown in the parts book. When I tighten the fitting, there doesn't seem to be any contact with the o-ring. I used some teflon grease. I will take a good look at the alignment. There were no shims under the pump so I thought that all was well.
    Sandra in Indy

    IG kidney shape, NEW* vinyl liner-2010
    approx 26,000 gal
    StaRite Sys 3 cartidge filter, inline chlorinator
    gas heater
    looploc mesh cover

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
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    22,331

    Re: Hayward Northstar coupling o-rings

    Does the o-ring material stick out past the surface when it's seated in the groove?
    It does sound like they're not the right material thickness. You could probably measure them and find replacements of bigger thickness that will allow it to seal. It seems odd that they'd be the wrong size though.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Hayward Northstar coupling o-rings

    They don't stick out beyond the edge of the flange. They are the right part number and were packaged in the Hayward plastic parts bag and it was sealed. Could they have ben made in China? Some of thier measuring tools are different than ours.
    Sandra in Indy

    IG kidney shape, NEW* vinyl liner-2010
    approx 26,000 gal
    StaRite Sys 3 cartidge filter, inline chlorinator
    gas heater
    looploc mesh cover

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,331

    Re: Hayward Northstar coupling o-rings

    Anything is possible. I'd at least call Hayward about it. They should know if they're not the right thickness.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  7. Back To Top    #7

    Re: Hayward Northstar coupling o-rings

    Is it possible that the couplings are not Hayward? Do the O-rings (old and new) look identical? Any cracks in the couplings?

    I have had two northstars and have had them disconnected a few times and have had no problems.
    16K gallon, Pebble tec, beach entry. Two 1 hp Pentair Whisperflos. One for Paramount MDX2 main drain, Paramount debris canister, and Pentair CCP 520 filter. One for skimmer w/sock and Paramount PCC2000 in floor cleaner. 3/4 hp Pentair Pinnacle for waterfall. Fiberstars fiber optic pool lighting. Aqua-Logic AQL-P-4 control panel with wired remote in the house. SWCG system that is not used. Ultra-Pure Ozonator that is not used.

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