... resistant 3.Black, polyproplyene reclosable fastener Dscription3M ™ Dual Lock ™ Reclosable Fasteners have been used extensively in transportation, electronics ... Interior Trim, Seat belt cover, Trunk Covers.Dual Lock reclosable fasteners SJ3751, SJ3752 and SJ3781 can replace conventional ... user’s method of application. 3M Dual Lock Reclosable Fastener SJ3752(Type 170) Black with white acrylic adhesive