HOSE AND FITTINGS, GASKETS, MATTING, SHEET RUBBER, RAIN GEAR, BOOTS, V-BELTS, PACKING, GLOVES, SAFETY PRODUCTS, SPONGE, FOAM, VALVES, PUMPS, MIL SPEC PARTS , O-RINGS, INDUSTRIAL SORBENTS, REELS, TOOLS. RESEARCH DEPARTMENT TO LOCATE HARD TO FIND ITEMS.

Keystone was formed by PhD level researchers with combined experience spanning industry and academia focused. We utilize the fields of material science and chemistry and engineering to push the limits of metallization and coatings technology.

Flour Milling, Rice Milling, Frozen Cakes, Pies, and Other Pastries Manufacturing, Flour Mixes and Dough Manufacturing from Purchased Flour, Coffee and Tea Manufacturing

Broadwoven Fabric Mills, Nonwoven Fabric Mills, Textile and Fabric Finishing (except Broadwoven Fabric) Mills, Fabric Coating Mills, Other Household Textile Product Mills

All Other Miscellaneous Fabricated Metal Product Manufacturing, Industrial Mold Manufacturing, Carbon and Graphite Product Manufacturing, Other Aircraft Parts and Auxiliary Equipment Manufacturing, Ship Building and Repairing

Plastics Material and Resin Manufacturing, Explosives Manufacturing, All Other Plastics Product Manufacturing, Rolled Steel Shape Manufacturing, Hardware Manufacturing

Glass Product Manufacturing Made of Purchased Glass, Cut Stone and Stone Product Manufacturing, Plate Work Manufacturing, Ornamental and Architectural Metal Work Manufacturing, Machine Shops