ResoNix Butyl Rope is a high-performance, USA-made extruded butyl product designed for sealing, decoupling, and damping tasks across a wide range of applications. Unlike generic butyl sealants or caulking products, it remains soft, flexible, and tacky for the long haul, with no drying out, hardening, or cracking. It uses a slightly different butyl formula than our CLD Squares to support its different role, but providing strong adhesion, proper viscoelastic damping behavior, and effective decoupling performance without compromise.

       In automotive sound treatment, ResoNix Butyl Rope is incredibly useful for solving annoying and often hard-to-reach rattles, buzzes, and vibrations. It can be compressed between overlapping door panel layers, clips, or brackets to eliminate vibration noise. It can be packed into tight gaps, used to form a constrained layer damping system between crash bars and door skins, or used as a gasket and decoupler between speaker baffles and door metal for an airtight, rattle-free seal.

       It is also widely used in marine, industrial, HVAC, and other environments where a waterproof, non-curing sealant or vibration isolator is needed. Whether you're stopping interior rattles in a BMW, sealing HVAC seams, or isolating panel joints in a piece of machinery, ResoNix Butyl Rope is one of the most convenient and effective tools to have on hand.

       Each 15-foot roll is 3/8″ in diameter, and can be easily pulled apart, stretched, or cut by hand or with scissors. It adheres to metal, plastic, glass, painted surfaces, and more, and stays adhered for years without shifting or sagging. This is a simple, inexpensive, and genuinely useful problem-solving material that no installer should be without.