Mechanical Seals; Centrifugal Pumps; Clutches and apparatus for power transmission other than land vehicles; Hydraulic controls for machines, motors and engines; Pneumatic controls for machines, motors and engines; Machine couplings and transmission components except for land vehicles; Cylinder heads for engines; Pistons for Cylinders; Machine parts, namely, cylinders; Computer-controlled, power-operated machine tool for abrasive jet cutting and machining; Metal working machines, namely, machining centres; Numerically controlled machines and machine tools used for machining parts; Exhaust manifold for engines; Motors other than for land vehicles; Internal combustion engine parts, namely, piston rings; Internal combustion engine parts, namely, pistons; Pumps as parts of machines, motors and engines; Shaft couplings as parts of machines; Shaft couplings for machines; Back pressure valves as parts of machines; Ball valves being parts of machines; Parts of oilfield well head machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; Proportional flow valves as parts of machines; Valves being parts of machines; Valves being parts of machines operated pneumatically and by air; Parts of machines, namely, Clack Valves; Driving motors other than for land vehicles, Earth Moving machines; Hydraulic Engines and motors except for land vehicles; Power Jacks; Pistons for engines