The use of nonmechanical systems of material--putties, caulk and foam--that are capable of fitting around or in irregular cables and pipes to seal off openings is more common. Where cables pass through shafts, walls, slabs, or enter electrical panels or cabinets, openings shall be tightly sealed with firestopping materials in accordance with design requirements. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when the cable tray cont d for instrumentation and control applications that require. SLIPSIL Sealing Plugs are an ideal solution for the fire-safe, gas and / or watertight sealing of penetrations carrying single or multiple pipes.
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