5618-001R QuickCable 1-1/2" x 48" Red Double Wall Heat Shrink with Sealant (1 ea 48" PCS) - This premium quality heat shrink tube is for heavy duty applications in abrasive environments where protection is a must with a 3 to 1 shrink ration and a final wall thickness of 1/8". Lined with an adhesive that melts when heated and creates a permanent connection when cooled. This shrink tube meets DOD Mil-DTL-2305/15A Class 1 and 2 specifications.