Straight Thread Tube Fitting O-Rings - Precision Associates Inc.
Parker - Industrial Pipe Adapter: 1/4″ Female Thread, 7/8-14 Male Thread, Male Straight Thread O-Ring x Female NPTF - 09107947 - MSC Industrial Supply
Sae Straight Thread O-ring Boss (orb), Sae J514, J1926/1, J1926/3, Iso 11926-1, Iso 11926-3 - Explore China Wholesale O-ring Boss and | Globalsources.com
Parker - Compression Tube Straight Thread Connector: 1-3/16-12″ Thread, O- Ring Face Seal/SAE-ORB - 66464587 - MSC Industrial Supply