3M™ Fully Nylon Insulated Butted Seam Male Disconnect, 71M-187-20-NL, Max. Temp. -40 to 221 °F (-40 to 105 °C). 3M™ Highland™ Vinyl Insulated Butted Seam Male Disconnect offers superior holding force while allowing for quick and easy disconnect. The terminal has a vinyl-insulated, butted-seam barrel and withstands temperatures of -40 to 221 degrees F (-40 to 105 degrees C). Its electrolytic copper construction offers good conductivity and a tin-plated finish resists corrosion.