A ferrite toroid retainer (10) provides an apparatus for retaining ferrite toroids (1) on a electrical cable (2) to prevent chafing of the cable's insulation. The device is constructed from an elastomer material. Ferrite toroid retainer (10) is constructed from a toroidal sleeve (11) having an inside diameter (B) equal to that of the outside diameter (A) of electrical cable (2). The outside diameter (C) of ferrite toroid retainer (10) is equal to that of the inside diameter (F) of ferrite toroid (1). A retaining ridge (12) is attached around the circumference of one end of toroidal sleeve (11) and has a tapered leading edge (13). Attached around the circumference of the opposite end of toroidal sleeve (11) is a non-tapered retaining ridge (15). Perpendicular edges (14) prevent ferrite toroids (1) from sliding off of toroidal sleeve (11).
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