Fittings with captivated O-ring seal for leak-free performance have been added to company's extensive line of fittings. Intended for use with 1/8-in. tubing, the brass fittings have a factory-installed Buna-N O-ring to seal their10-32 thread, thereby eliminating the need for sealant or additional seals.

Clippard Instrument Lab, (513) 521-4261,www.clippard.com