1 clamp o-ring +Lube compatible for Pentair 39300600 -Multiport Valve and Filter Certified to ANSI / NSF-61

Certified to ANSI / NSF-61 standards and is designed for use in potable water systems where NSF certification is required

Nitrile single lip spring lip attached to end of case only bore coat

If you have the older OB1 Whole House Filter with original color BLUE o-rings

This is an aftermarket 70-shore o-ring for a slightly tighter fit than the 50 shore o-ring

Includes 5 grams MCG-111

1 clamp o-ring +Lube compatible for Pentair 39300600 -Multiport Valve and Filter Certified to ANSI / NSF-6170 Shore clamp o ring replacement Fits Meteor Top Mount pool and spa sand filters Also fits pool and spa clamp on multiport valves Made of buna n material This is an aftermarket 70 shore o ring for a slightly tighter fit than the 50 shore o ring. Includes single use silicone lube for easier installation and added protection to the o ring.