Essentra USB Cap 2.5 mm 10.5 mm 10.5 mm Silicone Black [CP-RJ11]; 10311103
These dust covers are designed to protect USB and RJ ports from dust, dirt, debris and moisture, when not in use. Resistant to temperatures of up to 150C (302F).
Material: Nylon, Silicone Rubber, Plastic, EPDM Colour: Black, Grey Material Flammability Standard: UL94 V-2, Series Code: SRF0058