Profile: O'Brien Corporation is an ISO 9001:2000 registered company. We provide technical solutions to process accuracy and instrument winterization problems. O'Brien tubing bundles are a small diameter tube or group of tubes packaged in an insulated, weatherproofed jacket. We offer Vipak, an overall enclosure system that protects process instruments and accessories from impact, corrosive environments, and temperature extremes. We deal with Heatpak, which is a partial enclosure system that provides freeze protection and high pour point temperature maintenance for the process wetted portions of transmitter installations.