Product Information Material: Ductile Iron Select a Product Part NumberSealNominal SizePipe OD R75EPDM5"5.523" R75BUBuna-N5"5.523" R715EPDM1-1/2"1.900" R72EPDM2"2.375" R74EPDM4"4.50" R74BUBuna-N4"4.50" R78BUBuna-N8"8.625" R76BUBuna-N6"6.625" R725EPDM2-1/2"2.875" R76EPDM6"6.625" R72BUBuna-N2"2.375" R78EPDM8"8.625" R725BUBuna-N2-1/2"2.875" R73EPDM3"3.50" R73BUBuna-N3"3.50"