The invention relates to a pipe for conveying a fluid, in particular a coolant, for a vehicle, the pipe having a multi-layer structure and comprising: an inner layer defining an inner passage for fluid circulation, the inner layer being formed of a first material comprising an elastomer selected from the ethylene-propylene copolymers, an outer layer formed of a second material comprising: an elastomer selected from ethylene-vinyl acetate copolymers in a proportion of at least 50 phr, and a flame retardant according to a proportion of at least 50 phr, and an intermediate bonding layer arranged between the inner layer and the outer layer and comprising a mixture of an ethylene-propylene copolymer with an ethylene-vinyl acetate copolymer or a polyacrylate or an ethylene acrylate copolymer.

A tubing system includes a fluid carrying tubing including an undulating outer surface of peaks and valleys; a jacket encasing the tubing; a string located between the tubing and the jacket, the string configured to cut through the jacket to facilitate removal of the jacket.

A food sterilization tube includes a layer including a fluoropolymer, wherein the fluoropolymer includes a copolymer of tetrafluoroethylene and perfluoropropyl vinyl ether (PFA), a fluorinated ethylene propylene copolymer (FEP), polytetrafluoroethylene (PTFE), or combination thereof, wherein the fluoropolymer has a dielectric constant of less than 3 as measured by ASTM D150.

A tubing system includes a fluid carrying tubing; a first jacket encasing the tubing; a second jacket encasing the first jacket; the second jacket including a plurality of longitudinally extending ribs circumferentially arranged on an inside surface of the second jacket.

One aspect of the invention provides a composite refrigeration line set including: a suction line and a return line. One or more of the lines are a composite refrigeration line set tube including: an inner plastic tube; a first adhesive layer external to the inner plastic tube; an aluminum layer surrounding the first adhesive layer and coupled to the inner plastic tube via the first adhesive layer; a second adhesive layer external to the aluminum layer; and an outer plastic layer surrounding the aluminum layer and coupled to the aluminum layer via the second adhesive layer. The outer plastic tube includes a flame-resistant compound combined with PERT. The composite refrigeration line set tube has a flame and smoke spread rating of no more than 25/50 when tested in isolation using Appendix A1.22 of the CAN/ULC-S102-10 Standard Test Method for Surface Burning Characteristics of Building Materials and Assemblies.

A method for improving the heat stability or heat resistance of a cured fluorosilicone elastomer is disclosed. The method comprises I) mixing a stabilizer with a fluorosilicone elastomer base and a cure agent, to form a curable fluorosilicone elastomer composition. The stabilizer comprises B1) yellow iron oxide, and B2) optionally, an acid acceptor. The method further comprises II) vulcanizing the fluorosilicone elastomer composition containing the stabilizer.

A pipe joint (1) comprising: a tubular main body (10) having a flow path inside, which is formed of a resin comprising a copolymer having one or more selected from a vinyl cyanide monomer unit and an acrylic monomer unit, a rubber component, and an aromatic vinyl monomer unit; and a socket section (20a) integrally formed with the main body (10), wherein: the main body (10) has a foamed resin layer (30) and a non-foamed resin layer (50) covering the foamed resin layer (30); the amount of the rubber component in the foamed resin layer (30) as determined by pyrolysis-gas chromatography/mass spectrometry is within a specific range; the amount of the rubber component in the non-foamed resin layer (50) is within a specific range; and a ratio (L.sub.a/L.sub.a) of length (L.sub.a) from a base end (21a) to an opening end (22a) of the socket section (20a) to a thickness (d.sub.a) of the socket section (20a) at the opening end is 2.0 or more and 10.0 or less.

Hoses include a tube, a reinforcement layer disposed outwardly from the tube, and a cover layer disposed outwardly from the reinforcement layer. The cover layer may be based on a first elastomeric blend of a first chlorinated polyethylene and chlorosulphonated polyethylene, a first flame-resistant composition, and a peroxide/sulfur curing system. The tube may be based upon a second elastomeric blend of a second chlorinated polyethylene and ethylene vinyl acetate rubber, a second flame-resistant composition, and a peroxide curing system. The first flame-resistant package and the second flame-resistant package includes one or more ingredients selected from the group consisting of antimony oxide, zinc molybdate/magnesium silicate complex, magnesium aluminum hydroxy carbonate, and aluminum trihydroxide. In some aspects, the hoses meet the testing performance requirements of EN 45545-2, HL2/R22 category standard, and EN854 type 2TE standard.

A multilayer tubular structure (MLT) for transport of alcohol-containing petrol. The MLT from the outside inwards has at least one barrier layer and at least one inner layer located below the barrier layer. The inner layer, or all the layers contain on average at most 1.5% of plasticizer relative to the total weight of the composition of each layer or to the total weight of all the compositions of the layers. The inner layer is predominantly made of at least one polyamide having more than 75% aliphatic units. The aliphatic polyamide has a mean number of carbon atoms per nitrogen atom selected from the following: A: from 4 to 8.5; B: from 7 to 10; C: from 9 to 18; with the proviso that when the inner layer comprises at least three polyamides, at least one of the polyamides A, B and C is excluded.

An attack fire hose capable of withstanding radiant and convective heating without leakage or degradation of performance for significant periods of time is disclosed. The hose includes a woven aramid blend of fibers in the outer jacket, and a nitrile rubber layer is extruded through the weave of an inner nylon/polyester jacket that is fitted within the woven outer jacket. The resultant hose retains a double jacketed construction with exceptional thermal performance.