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As one of only a few AAR M-1003 certified rubber manufacturers in the US, Longwood Elastomers has supplied aftermarket rubber components used in WABCO's Type 26 Locomotive Equipment for nearly four decades. Longwood supplies individual components as well as complete overhaul kits which are designed to meet and exceed original equipment standards. Products include AAR certified: packing cups, diaphragms, check valves, gaskets, O-rings, strainers, filters, other various seals as well as complete overhaul kits.