National Plastics & Seals, Inc. - Locations
Distributor, Custom Manufacturer
ISO 9001:2000 certified custom fabricator & distributor of seals including O-rings in various durometers. Materials include ethylene, propylene (EPDM), nitrile (NBR), silicone, neoprene, fluorocarbon, PTFE & PTFE coated, Buna-N, Viton® & hydrogenated nitrile (HNBR). Seals & molded parts are also available. Meets Military Spec. Meets ASTM specifications & 3-A standards. UL listed. FDA, USDA & NSF approved. RoHS compliant. On-time delivery.
www.nationalplastics.com/rubber-molded-part...

OmniPAC, Inc. - Saint Charles, IL (Serving Iowa)
Distributor
An ISO 9001:2008 registered supplier of O-rings in English (AS568) & metric sizes. Many other special sizes available from existing tooling. Other capabilities include custom molded O-rings/O-ring-like seals. Vulcanized rings are also available.
www.omnipac.com/

Dygert-Peck Co. - Marion, IA
Manufacturer, Custom Manufacturer
Engineered Products For Custom & Standard O-Rings, Seals & Gaskets