Special Features:

Fits snugly around cable and into aluminum or steel frame to form an airtight/watertight seal and provide fire protection of cables passing through fire rated walls/floors/bulkheads/decks; modules expand when exposed to heat providing continuous seal even if cable jacket disintegrates

Properties:

An item designed to be interposed between a cable and its support or housing to prevent chafing caused by contraction and expansion due to changes in the ambient temperature or damage or injury from outside sources. excludes such items as loom, cotton sleeving, rubber blankets, grade clamps and all types of conduit and insulation sleeving, electrical.