Pool Ruler(TM) DEX2400Z5 O-Ring Two Pack + Lubricant for Hayward Outlet Elbow for Micro-Clear & Pro-Grid D.E. Filters & Swim-Clear & HCF Cartridge Filters INCLUDED: Two O-Rings + 1cc of ORing grease. Everything you need for two o-ring replacements! COMPATIBILITY: Hayward DE Filters: Pro-Grid & Micro-Clear, Hayward Cartridge Filters: Swim-Clear & HCF, Also all Aladdin O-24 oring fitments for Pentair, Sta-Rite, American Products O-RING GREASE INCLUDED: Our synthetic NLGI grade 2 heavy-duty lube with PTFE. Synthetic base fluids and the addition of PTFE micro powders combine to form a premium lubricant that provides longer life protection against friction, wear, rust and corrosion. Designed for oring use and will not run, drip, evaporate or form gummy deposits, and will not melt or separate. EXAMPLE FILTERS: Hayward 24, 36, 48, 60 sqft ProGrid DE filters. (DE2420, DE3620, DE4820, DE6020, DE7220 INSTRUCTIONS: Remove old o-ring. Clean channel where o-ring was. Apply lubricant to new o-ring. Insert o-ring in channel. Enjoy your pool!