Hilec, LLC. is a foremost manufacturer of high temperature sleeving, braided fiberglass sleeving, knitted fiberglass sleeving, coated fiberglass sleeving and many other sleeving related products. Our sleevings are used in electric motors, generators, transformers, lighting devices, wiring harnesses, various automotive items and for aerospace applications. Hilec's products are called out for use in a wide selection of UL Insulation Systems. In addition to the traditional coated glass sleeving, Hilec also produces unsupported silicone rubber tubing and expandable monofilament sleeving in several materials including FR grades. Throughout our web site you will find a variety of information on our braided sleeves, fiberglass sleevings and many other sleeving materials. At Hilec, we're here to