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Thermoplastic vulcanizates were first reported in 1962 by A.M. Gessler and W.H. Haslett. [4] In 1973, W.K. Fisher reported the dynamic vulcanization process through his prior work on polypropylene and EPDM rubber-based TPVs with peroxides as a cross-linking agent.
Core plugs are usually thin metal cups press fitted into the casting holes, but may be made of rubber or other materials. The most common metal plugs used in automotive engines are made from plated mild steels, stainless steels, brass or bronze. In some high-performance engines the core plugs are large diameter cast metal threaded pipe plugs. [3]
Thus, expansion joints reduce cracks, including in the overall structure, while control joints manage cracks, primarily along the visual surface. Roadway control joints may be sealed with hot tar, cold sealant (such as silicone), or compression sealant (such as rubber or polymers based crossed linked foams). [7]
The first major expansion of Advance Auto Parts was in 1998 when the company acquired the remaining operations of Western Auto, an auto parts and general store retailer. Most of the Western Auto operations had been taken over by Sears, Roebuck and Co. in 1987. [ 10 ]
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Firestone Tire and Rubber Company is an American tire company founded by Harvey S. Firestone (1868–1938) in 1900 initially to supply solid rubber side-wire tires [2] for fire apparatus, [3] and later, pneumatic tires for wagons, buggies, and other forms of wheeled transportation common in the era.