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However, as the serious health-related hazards of asbestos eventually started to become apparent, other materials had to be found. Asbestos brake pads have largely been replaced by non-asbestos organic (NAO) materials in first world countries. [9] Today, brake pad materials are classified into one of four principal categories, as follows:
The brake lining is that part of the brake pad which actually contacts the metal brake disc (rotor) when the brake is engaged. Using a typical bicycle brake as an example, the backing would be the metal shell which provides mechanical support, and the lining would be the rubbery portion which contacts the rims when the brakes are applied.
The most important markets for brake linings are Europe, Japan and the United States, closely followed by emerging Asian economies India and China. Although the use of asbestos in friction linings has been prohibited in the EU since 1989, elevated asbestos levels are still detected there in areas which include a lot of braking like junctions ...
Mac's Spring & Brake Service shop, with Raybestos brakes (ca. 1930-1945). In 1906, Raymond and Law invented the woven brake lining, an important innovation in automotive brakes. From 1919 to 1989 Raybestos brand was manufactured by Raymark Industries, Inc, of Stratford, Connecticut. Raymark Industries filed for Chapter 11 bankruptcy in 1998. [2]
R90 calls for linings to be tested for speed sensitivity, cold performance, and replacement Brake pads and brake shoes are permitted to deviate from the frictional characteristics of their original-equipment counterparts by not more than 15%. [2] In addition, R90 requires tamper-evident, sealed packaging for replacement brake linings. [1]
Bullet-proof body armor, helmets, brake pads, ropes, cables and optical fibre cables, etc. and as an asbestos substitute Mylar: Polyethylene terephthalate film: High strength and stiffness, less permeable to gases, almost reflects light completely: Food packaging, transparent covering over paper, reflector for rollsigns and solar cooking stoves ...
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