Sigrist Exit Seals are the absolute best weather tight penetration seal compared to all other methods. Sigrist Exit Seals are injection molded in the USA using ultra-high impact resistant ABS resin (not plastic). It's high performance EPDM gaskets will easily last the life of the Exit Seal. Using water jet technology to precisely cut each gasket guaranteeing a consistent weather tight pathway seal. Molded from ultra high impact resin, Exit Seals remain resistant to oxidation throughout their...