Viqua OR40-50W O-ring for AWP Housing 4.5"x20" and 4.5"x10"

Viqua O-ring for WHITE 3-Piece filter housings including AWP40B-V, AWP42B-V, AWP50B-V, and AWP52B-V systems.  This does NOT fit Viqua Clear Housings. This O-Ring is made of Nitrile Rubber or Buna-N rubber for added strength and elasticity to create create a tighter seal. The O-Ring creates a watertight seal in the housing and must be replaced if cracked or damaged.