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CO2 O-Ring Washers
If you're supplementing your indoor garden with carbon dioxide using a CO2 tank and regulator, it is recommended that you change the washers every time you change your CO2 tank.
Maintaining the O-Ring washers give you maximum protection against CO2 leakage at the tank connection points.
These plastic washers fit any standard-sized CO2 tanks.
Comes in a package of three O-Ring Washers.
CO2 O-Ring Washers - pack of 3
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$4.95
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