ARANDELA

UNA ARANDELA FORMADA DE UN CAUCHO DE AUTO-LUBRICACION Y QUE SE PUEDE FIJAR A UN HILO, TAL COMO UN HILO ELECTRICO, POR MEDIO DE CINTA ADHESIVA. LA ARANDELA DE CAUCHO (10) SE FIJA EN EL HILO ELECTRICO (14) CON CINTA ADHESIVA (12, 12) Y SE INTRODUCE POR UN ORIFICIO PASANTE (22) QUE PENETRA A TRAVES DE UNA DIVISION (20) PARA LOGRAR UNA JUNTA ESTANCA ENTRE EL HILO ELECTRICO (14) Y UNA PARED INTERIOR DE DICHO ORIFICIO (22). EL CAUCHO DE LA ARANDELA (10) ES UN CAUCHO DE AUTO-LUBRICACION QUE CONTIENE UN CARBONATO DE POLIALQUILO OLEOSO DE FORMULA: RI-O-CO-O-(CH2CH2C(CH3)HCH2CH2-O-CO-O) N-RI EN DONDE N ES UN ENTERO DE 1 A 8 Y RI REPRESENTA (I-C7H15). A grommet which is formed from a self-lubricating rubber, and can be fixed by means of a wire such as electric wires and an adhesive tape. The rubber grommet (10) is fixed to the electric wire (14) with the adhesive tapes (12, 12) and inserted into a through hole (22) penetrating through a partition (20) to provide sealing between the electric wire (14) and an inner wall of the through hole (22). Rubber forming the grommet (10) is a self-lubricating rubber containing an oily polyalkyl carbonate, which is represented by the following chemical formula:wherein n is an integer of 1 to 8, and Ri represents (i-C7H15).