Water Lube 1.75 Oz Jar Lubricant and Sealant for O-Rings and Gasket, WLB-1

Excellent lubricant for O-rings used in swimming pools. It does not make the O-rings swell due to heat, I have learned that lubricants with silicon make the O-rings get hot and Swell out of shape so it is hard to get the top back on pool filters. It also works well for commercial filters which have plungers that you use to backwash with.