Golden Asia Industrial Co., Ltd.
Manufactures and hones cylinders and piston rods for hydraulic machinery.
http://www.airhydraulic.com/

Bergner Metalurgica
Manufacturer of compressor (piston type) spare parts: Valves, piston rod packings, scraper rings, PTFE piston rings, for Ateliers Francois, ABC, Belliss and Morcom and other compressors.
http://www.bergner.com.ar/

Hallite Seals International
Hallite are an ISO accredited manufacturer of Hydraulic Seals - Piston, Rod, Gland, Wiper Seals, Bearings, Back-Up & O-Rings, Seal Kits, Single and Double Acting piston seals, excluder seal, Manufactured from PTFE, polyurethane, nitrile, NBR, AU, FKM
http://www.hallite.co.uk

Burckhardt Compression
Burckhardt Compression - Your partner for reciprocating compressors: labyrinth piston compressors, process gas compressors (API618), hyper compressors, quality compressor components, condition monitoring and all services.
http://www.burckhardtcompression.com

Orbiting Piston
Patented, innovative rotary internal combustion engine which orbits instead of rotates and has piston like chamber action. Includes theoretical and technical background, specifications, diagrams and patent.
http://home.woh.rr.com/opengine

Piston-rings.eu
Offers piston rings for vehicles and industrial engines. Includes product catalogue and company profile.
http://www.piston-rings.eu

Dynex/Rivett Inc.
A profile of Dynex/Rivett and its high pressure hydraulic products rated from 6000 psi (420 bar) to 20,000 psi (1400 bar), including hydraulic piston pumps, power units, hydraulic valves, hydraulic piston and vane motors, electrohydraulic controls and hydraulic actuators.
http://www.dynexhydraulics.com/

Catalina Cylinders
Catalina Cylinders is an industry leading manufacturer of quality high and low pressure aluminum compressed gas cylinders.
http://www.catalinacylinders.com/

Illinois Pneumatics
Illinois Pheumatics designs and manufacturers pneumatic cylinders. Illinois Pneumatics prides itself in modifying standard cylinders for special use.
http://www.illpneumatics.com/

Custom Cylinders International Incorporated
customcylindersintinc.com is the offical web page for Custom Cylinders International Incorporated, Mico Machining, and Custom Cylinder Repair Service
http://www.customcylindersintinc.com/