Mid-West Metal Products Co., Inc. - Muncie, IN
Manufacturer, Custom Manufacturer, Service Company
Custom manufacturer of compressor piston rings & locomotive piston rings. Capabilities include prototyping, machining, forming, welding, laser cutting, pressing, bending, shearing, sawing, riveting, sanding, grinding, sand blasting, tapping, powder coating, plating & finishing.
www.midwestmetal.com/index.html

United Ring & Seal, Inc. - Easton, PA
Manufacturer, Custom Manufacturer
Custom manufacturer of piston rings for locomotive applications. Materials include high temperature alloys, Inconel® X-750 & X-718, 17-4PH, 17-7PH, A-286, bronze, cast iron, ductile iron & Haynes®, Monel®, aluminum bronze, Ni-resist & steel alloys including 1095, 52100, 4130 & 4140. Rings are available in sizes ranging from 5/8 in. to 15 in. dia. Piston rings are also used in stationary gas & steam turbines, state-of-the-art turbine engines, general aviation internal combustion engines, hydraulic & other commercial applications. Meets MIL-I-45208 & MIL-STD 45662 Spec. ISO 9000:2000 compliant. On-time delivery.
www.unitedringandseal.com/index.html

Day Piston Co. - Cleveland, OH
Custom Manufacturer
Manufacturer of piston rings for the automotive, heavy-duty truck, OEM, HVAC, industrial, consumer, air compressor industries. Round and oval pistons are available in aluminum, cast iron, and steel. Part diameter, width, length, and height worked with is up to 8 in and the machining tolerance is .0002 in. Castings, bushings, and plating can also be sourced. Specializing in CNC machining, capabilities include vertical machining centers, CNC vertical lathes, and dedicated production cells. Services offered include design consulting, reverse engineering, stocking/inventory programs, small to high volume continuous production, and on-time delivery.
www.daypiston.com/index.htm

RT Dygert International - Niles, IL
Distributor, Custom Manufacturer
ISO 9001:2000 certified distributor of seals such as piston cups, compressor piston rings, locomotive piston rings, & piston seals. Molding technology includes compression, vacuum compression, transfer, injection, lathe cutting, extrusion, PTFE molding, rapid prototyping, & production tooling. Value added services such as JIT kitting, bar coding, audit bin stocking, subassembly, parts washing, chlorination, material selection & development, & electronic data interchange (EDI). Industries served include fluid power, chemical, beverage, agriculture, & plumbing.

Westcode Holdings, LLC - West Chester, PA
Manufacturer, Custom Manufacturer, Service Company
Manufacturer & service of railroad, transit, locomotive parts & equipment. Railroad car brake systems, air brakes, railroad door controls, railroad HVAC units. Railroad door operators can be floor mounted electric, or can be rail mounted air & electric. Railroad car doors, internal doors & platform screen doors.

RT Dygert International - Edina, MN
Distributor, Custom Manufacturer
ISO 9001:2000 certified distributor of seals such as piston cups, compressor piston rings, locomotive piston rings, & piston seals. Molding technology includes compression, vacuum compression, transfer, injection, lathe cutting, extrusion, PTFE molding, rapid prototyping, & production tooling. Value added services such as JIT kitting, bar coding, audit bin stocking, subassembly, parts washing, chlorination, material selection & development, & electronic data interchange (EDI). Industries served include fluid power, chemical, beverage, agriculture, & plumbing.

Grover Corp. - Milwaukee, WI
Manufacturer, Custom Manufacturer
Manufacturer of custom & standard metallic piston rings for the locomotive/rail industry used for sealing & compression applications.

Auto-Diesel Piston Ring Co. - Cleveland, OH
Manufacturer, Custom Manufacturer
Manufacturer of piston, compressor & locomotive rings.