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

Sealing Specialists

McMasters Koss Company provides IATF 16949 and ISO 9001 registered manufacturing and stocking distribution of seals, o-rings, gaskets, oil seals, diaphragms, caps, custom molded shapes, specialty plastics, insulating gasket kits, and pipeline cathodic protection systems.

McMASTERS KOSS employees put the right products in the right hands at the right time for the right price so our customers remain competitive and we remain profitable.

Our employees continuously improve what’s “right” to increase customer satisfaction and maintain regulatory compliance.

We sell high quality seals and components to OEMs in the following fluid power applications: automotive, industrial, consumer, gas, water, and electric utilities, diesel, heavy equipment, hydraulic, pneumatic, military, medical, semiconductor, and aerospace.

Our worldwide IATF 16949 manufacturing plants, global logistics expertise, and value added consignment and distribution services will provide great quality and value for your company.

Contact our experienced sales engineers at
+1 (800) 548-0089 for solutions to your sealing problems.