Sealey gas cylinder refillable carbon dioxide 1000g sealey co2 1kg portable sized co2 refillable gas cylinder for the jobbing welder gives value for money repaying investment in just a few fills suitable for siegen minimig and sealey mightymig welders will also fit other makes of welder regulator refill exchange service available through local distributors sealey co2 1kg gas cylinder refillable carbon dioxide 1000g