Combustion engine fuel nozzles; Emission reduction units for motors and engines, namely, EGR valves; Engine injectors; Exhaust gas treatment systems for diesel engines; Fuel injector parts for land and water vehicle engines; Marine engines and parts and fittings thereof; Nitrogen oxide traps for exhaust systems being parts of internal combustion engines; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems being sold as a unit with manufacturing machines; Pressure switches as parts of machines; Mechanical seals in the nature of sealing joints for vehicle engines