REINFORCED HOSE STRUCTURE HAVING A TOUGH FLEXIBLE COVER

摘要

REINFORCED HOSE STRUCTURE HAVING A TOUGH FLEXIBLE COVER A hose structure 10 having a simplified cover construction 22 suitable for rigorous high pressure applications such as rotary well-drilling apparatus is described. The hose includes a heavy-walled tube 12 of elastomeric material preferably having a measured stress of at least 600 psi at 20 percent elongation, an elongation at rupture of at least 150 percent and a Young's modulus of at least 2000 psi and a simplified cover. The formulation of the tube material preferably includes a reactive resin system capable of polymerizing in situ and simplified cover 22 comprises a compounded carboxylated acrylonitrile butadiene rubber.