Halguard® 58610 and 58615 are 53 Shore D compounds that have UL-94 vertical burn ratings of V-0 for 1/16 in. thick specimens and respective oxygen indices of 52% and 45%. Both enable passing of UL-1685 FT-4 and UL-1666 riser flame tests. Also available, Halguard 58620 provides low level of post-extrusion shrinkage suited for fiber optic cable applications. This 54 Shore D compound enables passing UL-1685 flame test. All of these HFFR compounds suit general-purpose jacketing applications.