Sinuous wire Commonly used in ottomans, chairs (especially seats), auto seats and sofas (seat and back) and take the place of coil springs. Sinuous wire is very inexpensive, but should hold up for 10 - 20+ years without problems. Sinuous springs clamp to each of the front and back rails of a chair or couch in parallel. Multiple Sizes: Available in standard and custom dimensions to fit any space. This quality sectional features high-density foam cushions and sinuous wire construction in the seating area. Spring Forming Hickory Springs has been producing top-quality springs, upholstery coils, sinuous wire products, metal components and constructions for the furniture and bedding industries for Apr 17, 2018 ยท High Quality ZigZag (No-Sag) Sinuous Upholstery Spring - Full Roll (111 Feet) 8 Gauge Sinuous Wire: For extra-firm seats and industrial uses. Photo: Gregory Han. Back Type Tight Back. The gel-injected seat cushions, wrapped in fiber, offer luxurious comfort, while the sinuous wire springs ensure optimal support. The rods prevent the springs from moving or sagging. exzogbvibwzwziemzqtbadjmslshyrnwhhploeklcvowyxkmhtykukooaebrmklgrinhr