A proven long-term performer in thermal and nuclear power generating stations, the Pop-A-Plug P2 tube plug features patented internally serrated rings designed to maintain a leak tight seal under extreme thermal and pressure cycling. The Pop-A-Plug P2 tube plugging system reduces downtime, eliminates welding and explosives, and will not damage your tubes, tubejoints or tubesheet. Working pressures to 7,000 PsiG (480 BarG). Sizes to fit 0.400” to 1.460” (10.16mm to 37.08mm) tube I.D. Proven helium leak tight to 1 x 10 -10 cc/sec. Breakaway ensures quick, easy and tightly controlled installation force eliminating damage to tube joints and epoxy coated tube sheets. Larger and smaller sizes available. PopA-Plug P2 tube plug sizing lower limit is 0.215” (5.46mm). Removable for retubing. Compliant with quality assurance systems including; ANSI N45.2, 10 CFR 50 Appx. B, 10 CFR 21.