Check the listing for details. GRAINGER APPROVED SBF-3PG Dust Cap,Type DC,Polypropylene,3" 6YZG0. Condition: New. Listed at 142.97 USD. Dust Cap, Socket, For Coupling Size 3 in, Body Material Glass Filled Polypropylene, Type DC, Coupling Size 3 in, Natural, Gasket Material Nitrile, Overall Length 4 3/4 in, Includes Locking Arm Yes Type DC antistatic polypropylene cam and groove dust caps include finger rings and handles (also known as cam arms). Type DC fittings are most often used with Type A, E, and F adapters to seal the end of the connection, preventing leaks and keeping debris and materials out of the connection. Antistatic polypropylene (also called PP) is a thermoplastic material with an antistatic additive that resists UV, weathering, corrosion, and reduces or eliminates static buildup. Antistatic polypropylene dust caps are used with dry food materials, pharmaceuticals, and chemical processing.Polypropylene cam an.