CHL2-3980_20mm Pressure-Release Aluminum Crimp Seal with Molded PTFE-faced Butyl Rubber Septum-Sealing Ring by Jayne Bayquen | Apr 24, 2017 | Part Number CHL2-3980 20mm Pressure-Release Aluminum Crimp Seal with Molded PTFE-faced Butyl Rubber Septum-Sealing Ring