Product Information Used on: TTMA Flange Size: 3" ID: 3-3/8" OD: 4-1/2" Select a Product Part NumberMaterialThickness 300GDBSQKNylon/Klingersil® C-44011/16" 300GDBSQCBCork/Buna1/8" 300GDBSQEwhite EPDM1/8"