non-threaded MJS Series Tear-Tab Caps for Straight Metric Threads MJS Series tear-tab caps for straight metric threads feature an extra-wide ribbed tab that allows for easy installation and removal. The caps are translucent gold, making it possible to view an O-ring on the fitting. Material: Low-Density Polyethylene Color: Gold FCO Series Flat-Faced O-Ring Caps FCO Series flat-faced O-ring caps are designed to protect the outside of hexnuts and feature a chamfered flange for easy hand removal. A snug fit prevents falling during transit. The caps are ideal for fluid power valves, hose and pipe fittings. * Available in two styles * Internal ribs securely hold caps in place Material: Low-Density Polyethylene Color: Red FCO-120 thru FCO-200 OF Series FCO-40 thru FCO-100 Caps for Long-Threaded Connectors OF Series caps for long-threaded connectors feature six internal ribs that create a positive grip on the outer surface of the fittings nut. Contamination and damage are prevented by three internal webs that act as a positive stop and positioning feature to the fitting during installation. .06 FLANGE THICKNESS B C A * Caps for various thread sizes * Orange color for visibility Material: Low-Density Polyethylene Color: Orange 50 6 RIBS EQUALLY SPACED * For other material and color options, contact customer service.