Joints being parts of engines; sealing joints being parts of machines; non-metal engine gaskets for vehicles; sealing sleeves being parts of engines, motors or machines; shape memory sealing sleeves being parts of engines, motors or machines; radial shaft sealing rings being parts of engines, motors or machines; spring-energized U-rings being parts of engines, motors or machines; piston segments being parts of engines, motors or machines; piston rings for heat pumps; scroll seals being parts ...