Polaris 3900 Sport O-ring WMS Upper to Vactube Interface (R0544000)
The o-ring for the feed hose connector is a replacement part made by Polaris. The same rubber materials were used for the original factory part. Making it a genuine OEM product.
This o-ring was designed specifically for the WMS assembly and its purpose is to prevent the passing of air or fluid of this specifically defined space. This o-ring is placed over the top of the vac tube interface and this then connects to the bottom of the vacuum tube/feedpipe assembly ensuring there is a tight bond and no water or air can compromise the operating power of the cleaner.
Great troubleshooting tip if the cleaner is not moving well or operating to its maximum potential, could be caused by this o-ring being deteriorated. This can be corrected by simply replacing this product which would return the cleaner to its normal functionality.