Air compressors; Couplings for machines; Filter silencers for machines; Fluid power component kit comprising hose and fittings for use in machinery; Hydraulic valve actuators; Machine parts, namely, cylinders; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Machine parts, namely, mechanical seals; Oil filters; Parts for compressed-air tools, namely, brakes, filters, hoses, pipes, couplings valves, switches, compressors, clamping tools and injectors; Piston rings; Pneumatic air preparation equipment, namely, airline filters, lubricators, and regulators, all being parts of machines; Pneumatic piercing machinery and auxiliary supportive devices used in the installation or replacement of utility pipe lines, cable lines, pipe tunnels and underground utility systems; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems being sold as a unit with manufacturing machines; Valves being parts of machines operated pneumatically and by air