Abstract: A friction material suitable for use as a bearing, comprising:(a) 20-40 weight percent phenolic resin;(b) 5-15 weight percent graphite;(c) 0.5-3.5 weight percent carbon black;(d) 40-60 weight percent of a non-asbestos containing refractory fiber comprising at least 25 wt. % CaO and 35 wt. % SiO.sub.2 ; and(e) 4-10 weight percent acrylic fiber.

Abstract: A sound attenuating composition for use as a molded-in backer stock between a brake backer plate and the wear stock of a brake shoe comprising approximately in percent by volume:non-fibrous organic components=15-40%fiber reinforcement=20-50%inorganic components=15-50%phenolic resin=5-10%.

Abstract: A conduit especially suitable for carrying high temperature fluids is disclosed herein and includes an outer casing, a concentric inner core and an intermediate concentric layer of insulation material. The conduit also includes what may be referred to as a pressure relief valve located through the outer casing of the conduit and extending into the concentric layer of insulation material. In the event that the fluid finds its way into this layer of insulation material and in the event it expands, the pressure relief valve provides a readily available passage to the ambient surroundings for the expanding fluid.

Abstract: A friction disc comprises continuous longitudinally co-extensive generally parallel glass strands wound spirally in the plane of the disc; short, generally parallel glass strands extending normal to the plane of the disc along said spiral; non-ferrous metal chips or wires; and a heat curable cement binding said glass strands and non-ferrous metal chips or wires together. The friction disc is made by forming a glass fabric with warp rovings of continuous parallel glass strands and fill rovings of continuous parallel glass strands; impregnating the fabric with a heat curable cement; winding the glass fabric onto a mandrel to form a spirally wrapped cylinder; slicing the cylinder into disc preforms; and molding the disc preforms under heat and pressure. Either non-ferrous metal wires are included in the fabric or non-ferrous metal chips are deposited on the fabric prior to wrapping the fabric onto the mandrel.