Panel strain relief bushing STRB2 series

roundflatnylon

Our Flex Protect Strain Relief Bushings, sometimes referred to as cable bend protectors or spring cable bushings, are precision-engineered components designed to protect cable integrity at panel exits. Also known as flex protect strain relief bushings, nylon strain relief bushings or UL94V-2 bushings, these fittings are essential for guarding flat and round cables in industrial control systems, electrical cabinets, consumer appliances and telecom enclosures across the UK. Featuring a patented spring-arm design and UL 94V-2 Nylon 6/6 construction, they prevent kinks, pulls and twists—extending service life while maintaining compliance with flame-retardant standards. Available materials & style options UL 94V-2 Nylon 6/6 (black) Round or flat cable versions (suffix ‘R' or ‘F') Key features & benefits Spring-arm design: Absorbs lateral stress and ensures smooth bending radius without sharp cable kinks Flame-retardant Nylon: UL 94V-2 rated, offering both insulation and fire safety Push-fit installation: Tool-free mounting into pre-drilled panels, with optional installation pliers available Strain relief protection: Guards against cable pull-out and absorbs mechanical force, proven to pass CSA's 50,000-cycle vacuum cleaner bend test Compliance certified: UL File E15331, CSA File 8919, and UL859 for cord flexion Cost-effective: Competitively priced alternative to Heyco Lockit snap-in bushings Common UK use cases Strain relief for appliance power leads such as vacuum cleaners and kitchen equipment Cable protection in industrial control panels and distribution boards Strain control in telecom and data cabinets