Abstract: An automotive vehicle vacuum brake hose that resists degradation when exposed to elevated temperatures up to about 175° C. for prolonged periods of time, the automotive vehicle vacuum brake hose comprising; an inner tubular member having an elastomeric matrix selected from the group consisting of acrylic elastomer and ethylene-vinyl acetate copolymer, and a protective cover around the inner tubular member. Preferably, the high temperature-resistant vacuum brake hose includes a reinforcement member around the inner tubular member and a protective cover around the reinforcement member.

Abstract: A composite hose includes a conductive fiber media extending contiguously from one end of the hose to the other. The conductive fiber media is covered by silver plating, and in one described embodiment comprises a silver-plated nylon fiber. The nylon fiber provides a flexible medium not readily prone to breakage, while the silver plating provides relatively low electrical resistance, due to its relatively high electrical conductivity, for avoiding potentially lethal effects of static electricity. In one described embodiment, the hose includes an inner layer of an insulation material, such as rubber. An electrically conductive fiber strand is applied over the inner layer in a spiral pattern, and an outer cover material is an extruded over the inner layer of the hose and the fiber strand. In another embodiment, the hose includes a textile braided yam layer positioned directly above the strand over the inner layer, immediately beneath the outer cover.

Abstract: A heat-resistant multi-layer hose is described. The hose includes inner and outer elastomeric layers, and an intermediate reinforcing layer. The inner and outer layers each include a substantial fraction of ethylene-octene copolymer, and may include one or more compatible polymers such as EPDM, chlorosulfonated polyethylene, and chlorinated polyethylene. The use of relatively large amounts of ethylene-octene copolymer results in improved high heat resistance.