20120216903 | MULTI-LAYER TUBING AND METHOD FOR JOINING - A multi-layer tube (MLT) to inhibit transmission of water vapor and for flame resistance greater than UL-94 HB includes an inner layer having a melt-extrudable polymeric material including a fluoropolymer and at least one additional layer positioned radially outward of the inner layer and including a flame resistant melt-extrudable polymeric material configured to minimize oxygen permeation. Additional layers may be configured to provide flexibility, oxygen and/or nitrogen barriers, thermal insulation, non-reactive materials, transparency, translucency, structural reinforcement, thermal and/or electrical conductivity, and/or dissipative properties. The MLT may be encased in a bundle cover with another tube element and/or electrically conductive element to form a tube bundle. A method for connecting a MLT to a fluid supply system includes positioning an end of the MLT in proximate contact with a connector interface and joining the MLT to the interface to form a hermetic seal or a low water vapor transmission seal. | 08-30-2012 |