The Peterson plastic -3AN plug comes in a pack of 10 and provides a simple protective cap for -3AN fittings and ports. These plastic plugs keep dirt and debris out during storage, assembly or servicing and are sized specifically for -3AN lines. They’re intended for use with Peterson pumps, breather cans and related fixtures, serving as convenient spares for plumbing and maintenance.
Peterson Fluid Systems Plastic Plug -3AN (Pack of 10)