8 mm Crimp Cap & TruSeal (100/pk)

8 mm aluminum crimp cap and TruSeal (TM)(PTFE/silicone). TruSeal is a silicone/PTFE seal for pennies more than rubber. These offer lower permeability and bleed than natural rubber, and resist degradation to 250 deg. C. Because the TruSeal is soft, lower crimping force is recommended. The PTFE layer is 0.08 mm thick; total thickness is 1.1 mm. Prestuffed with open-hole design laquered aluminum cap.