One & Two Piece -Tube Plugs (Click for more Info) Ideal for sealing leaky tubes in condenser and heat exchangers. It is recommended to use our ORTC – one revolution tube cutter to puncture the tube to ensure that pressure can not build up in the tube and cause the plug loosen or blow out. One Piece Tube Plugs Tube OD: 3/8" - 9.53 mm // Tube Gauge: 15 ~ 22 1/2" - 12.70 mm // Tube Gauge: 11 ~ 22 5/8" - 15.80 mm // Tube Gauge: 11 ~ 22 3/4" - 19.05 mm // Tube Gauge: 11 ~ 22 7/8" - 22.22 mm // Tube Gauge: 11 ~ 22 ** – Specify Material: Al.- Aluminium, S= Steel, Ss= Stainless Steel , B= Brass, M= Monel Two Piece Tube Plugs Tube OD: 5/8" - 15.80 mm // Tube Gauge: 13 ~ 20 3/4" - 19.05 mm // Tube Gauge: 12 ~ 22 7/8" - 22.20 mm // Tube Gauge: 12 ~ 22 1.0" - 25.40 mm // Tube Gauge: 12 ~ 22