Specifications: Material: HDPE Features: Designed to ANSI/ASME B16.5 and ANSI/ASME B16.47 specifications Provides full face flange protection on the flange's exposed sealing surface Specifically designed with a minimum of 4 equally spaced holes to match the flange's bolt hole diameter and bolt circle for ease of securing with fasteners Fasteners required: See Flange Protector Fasteners section located at the Pipe & Flange Protection main page Plastic Full-Face Flange Protectors,Full-Face Adhesive Protectors,