Full Technical Description: Black EPDM Rubber Material; 1/2 Inch (Rsc/Emt/Imc), 3/4 Inch (Emt/Imc) Trade Size; 0.84 Inch (Rsc), 0.706/0.922 Inch (EMT), 0.815/1.029 Inch (IMC) Conduit Size; Rsc/Emt/Imc Conduit Type; 4 Link(S); LINK-SEAL[R] Brand; Application Wet Location, Corrosive Environment; Hole Size 2 Inch Dia (Rsc/Emt), 2/2.5 Inch Dia (IMC); Material Glass Reinforced Nylon (Pressure Plate), Zinc Dichromate Plated Carbon Steel (Fastener); Pressure Rating 20 psig; Temperature Rating -40 to 250 Deg F; Used on Cast/Cored Hole, Plastic/Steel Sleeve; LSA Model