The Influenza A virus subtypes that have been confirmed in humans, ordered by the number of known human pandemic deaths, are: 1  H1N1 caused Spanish Flu and the 2009 swine flu outbreak (novel H1N1) 2  H2N2 caused Asian Flu. 3  H3N2 caused Hong Kong Flu. 4  H5N1 is bird flu, endemic in avians. 5  H7N7 has unusual zoonotic potential.
Plug seal capsfeature one-piece linerless construction and. are designed for use in closed systems, providing a liquid-. and gas-tight seal. When loosened, this cap can also be used. in open systems. This cap design was a Corning innovation. that first appeared in 1974.
PipeStoppers Leak Test Plugs automotive radiator test kit is composed of our industrial nylon expansion plugs. The kit can be used to seal radiator and coolant ports to test for leaks. These test plugs are made from a nylon body and plates that compress and industrial rubber seal. The industrial nylon used from theses plugs is shatterproof, corrosion resistant, light weight, and easily cleaned. These plugs are ideal for sealing automotive radiator ports while immersion testing.