E Series Utility Plugs E Series utility plugs are designed with straight sides and thin walls to protect threaded connectors. The flanged end provides easy removal in hard-to-reach areas. With such a versatile design, these plugs are ideal for a variety of threaded and non-threaded applications. Material: Low-Density Polyethylene Color: Yellow SEP Series Static Dissipative Plugs for Threaded Connectors SEP Series static dissipative plugs are designed to fit inside both threaded and non-threaded bayonet-type connectors. * Applicable specifications: MS/AS 90376 Material: Static Dissipative Polyethylene Color: Pink A RJ Series RJ45 Ethernet Jack Protective Plug RJ Series conductive polyethylene plugs are designed to protect RJ45-type connecting jacks for computers and network equipment. These plugs are ideal to protect ports from dust or moisture during assembly and shipment. Material: Conductive Polyethylene Copolymer (EVA) Color: Black 406 * For other material and color options, contact customer service.