• AS568B Standard Sizes (2-XXX Sizes, C/S 0.070", 0.103", 0.139", 0.210", 0.275")
• 3-XXX Sizes
• Metric Tube Fittings (ISO 6149) (Similar to SAE J2244)
• Non-standard dimensions available
• Aerospace Applications
• European Equivalent
• JIS Sizes
• Metric Sizes

ASTM D-2000/SAE J200 specifications and A2LA Lab test results available.

Oil Seals Double lip, Stainless steel springs, Metal O.D., Rubber O.D., metal to rubber bonded, and special configurations.
Custom Molded Shapes Injection, and transfer molded parts, extrusions, diaphragms, die-cut gaskets, lathe cut square rings, quad rings, u-cups, v-rings, t-seals, piston cups, tank seals, shipping caps, plugs, and cord stock.

Engineered Plastics and Teflon

Machined, Molded, and Extruded, thermoplastics, glass filled nylon, PEEK, HDPE, UHMW-PE, and Delrin.
Services Seal design assistance, mechanical seal repair, local stocking, custom packaging, marking, special coatings, kits, and part inspection.  Just-In-Time delivery (JIT), EDI, bar code labels, on-site vendor-managed inventory (VMI), automated ordering, and product batch control.
O-rings and Seals 

McMasters Koss Co.
4224 Normandy Court
Royal Oak, Michigan 48073

Phone: (248) 549-1414
Fax:    (248) 549-7753

(800) 548-0089