Rubber O-rings come in 3 sizes: lid, knob and inside tube. The O-ring for the lid seals the lid to prevent air from leaking out. The knob O-ring goes around the knob that the disconnect attaches to, to hold it in place. The stem O-ring is for the tube that runs inside of the tank(s).

O-Rings

PriceFrom $0.50
  • Please specify size when ordering.