Carbon-graphite self-lubricating materials
Metcar materials feature a low coefficient of friction and good wear properties in a high speed environment, making them ideal for aircraft gearbox face seals. They use dynamic "lift-off" to reduce seal face wear and friction. Metcar materials feature thermal conductivity with gives it the ability to maintain lower seal face temperatures. Metcar’s modern carbon-graphite materials are formulated with an eye to minimizing common problems associated with seal face wear, frictional heat, blistering, and coking, especially at temperatures higher than 400 F (204 C).
Metallized Carbon Corporation