O-rings to suit various Balboa 10300107, SpaNet XS3C, Davey QB035, Laing E-14, LX JA35 & JA50 spa circulation pumps. Choose from the Union style for the o-ring. 

As each manufacturer used various unions for the same pumps, we require a photo of your pump unions before sending, so we can ensure the correct ones are sent.

This product is for the O-ring only, not the barrel union. Images show the barrel unions for reference only.

Approx 47mm OD x 4mm thick. Can be stretched or pushed slightly to fit most common 40mm pump unions.