Pop-up Valve Seat is a orange rubber o-ring that is used with pop-up valves inside of blast pots for forming a seal and allowing the blast pot to pressurize.
Pop-Up Valve Seat
Orange Rubber...
Pop-up Valve Seat is a black rubber o-ring that is used with pop-up valves inside of blast pots for forming a seal and allowing the blast pot to pressurize.
Pop-Up Valve Seat
Black Rubber O-Ring