Vibrant -4AN aluminum crush washers are supplied as a pack of 10 and are intended for use with straight-thread adapter fittings where an O-ring is not accommodated. They are designed to seal ports when paired with Vibrant AN adapter fittings and metric adapters. The product is aluminum and includes a limited 30-day warranty as noted by the manufacturer.
Vibrant -4AN Crush Washers - Pack of 10