Flat needles are needles soldered in a straight line on a needle bar. These needles are usually for lining because their shape lets them deliver more ink to the skin.
Composite thrust bearings has a self-lubricating sliding layer on both sides of a composite core. The sliding layer consists of a seamless tape liner of PTFE blended with high-strength fillers and bonded to a core of continuously woven fiberglass encapsul