HellermannTyton Straight Cable Boot Black, Fluid Resistant Elastomer, 43mm. Adhesive Lined: No. Number of Breakouts: 1. Shrink Temperature: +135°C. Minimum Operating Temperature: -75°C. Maximum Operating Temperature: +150°C. Shrunk Diameter Primary: 28mm. Shrunk Diameter Secondary: 10mm. MPN: 401-57780