Terminals & Connectors (K-Spec® Series): Fully Insulated Quick Disconnects/Slide Connectors (K-Spec® Series): Nylon Option: Terminals and connectors with tin plated annealed copper construction are specifically designed for heavy-duty applications where both high temperatures and vibration levels are encountered . Nylon sleeves offer maximum crimp strength; many nylon terminals are double crimp style, one crimp on the bare wire for connection and one crimp on the wire insulation . Operating temperatures: Bradd, Nylon = 105°C. PVC Option: Insulated terminals and connectors feature a rigid insulation sleeve of polyvinyl chloride (PVC) . Sleeves are permanently affixed to the conductive barrel, providing quick crimping . The tough plastic sleeve protects against vibration damage by preventing wire flex at the crimp point . Operating temperatures: 75°C . 300 Volt rating .