HellermannTyton Cable Boot Black, Fluid Resistant Elastomer, 16.5mm, Shrink Temperature: +135°C, Minimum Operating Temperature: -75°C, Maximum Operating Temperature: +150°C, Shrunk Diameter Primary: 7.9mm, Shrunk Diameter Secondary: 3.8mm, MPN: 401-04024 104-4-G-PO-X-BK