Fiberfrax® ropes, braids and jointing products are durable, high-temperature ceramic fibre packing materials that are well-suited to industrial applications. They are noted for their superior insulating and sealing ability to 1260 °C. Fiberfrax ropes are a twisted, multi-ply ceramic fibre packing manufactured from Fiberfrax wicking. Standard minimum 3-ply rope is a low-density, highly compressive product form. HD rope is up to 9-ply and provides increased compression resistance and strength, and is approximately 40-65% denser than regular Fiberfrax rope.