Ace Seal, LLC - San Jose, CA (Serving Minnesota)
Manufacturer, Custom Manufacturer, Service Company
Manufacturer of standard & custom O-ring belts & fittings. Products are available in a variety of materials including rubber, nylon, butyl rubber, neoprene, cork, synthetic rubber, EPDM, gum rubber, fiber, red rubber, silicon, Viton® & closed cell sponge rubber. Other products such as O-ring cords, O-ring kits, gaskets, seals & molded components are also available. Capabilities include design engineering, fabricating, molding, single & multi-cavity tooling, lathe cutting, water jet cutting, die cutting, inventory management & stocking. QS 9000 & ISO 9002 approved.
www.aceseal.com/orings.html

Pneumadyne, Inc. - Plymouth, MN
Manufacturer, Custom Manufacturer
Manufacturer of O-ring fittings in a variety of configurations featuring 10-32 & 1/4-28 threads & barbs for use with 1/16 to 1/4 ID tubing. Straight connectors, elbows, tees, studs & bulkheads. ISO 9001:2008 Certified.
www.pneumadyne.com/thread-to-barbed-fitting...

Colder Products Co. - Saint Paul, MN
Manufacturer, Custom Manufacturer
ISO 9001:2008 and 13485 certified custom manufacturer of fittings including O-rings fittings. Available in different sizes & materials including polypropylene, nylon & acetal. Services include 3D-CAD designing, solid modeling, engineering, prototyping & testing.
www.colder.com/Products.aspx