4" O-Ring Flange Locking
O-ring sealing flange for the 2″, 3″, 4″, 5″, 6″, and 8″ Watertight Enclosures. These are the second generation of flanges with a locking cord and anti-rotation feature. Compatible with dome end caps, flat end caps, and custom end caps. Includes locking cord and O-rings.