Product Information Seal: Buna-N Select a Product Part NumberMaterialSize 150DA-90-ALAluminum1-1/2" 200DA-90-ALAluminum2" 300DA-90-ALAluminum3" 600DA-90-ALAluminum6" 200DA-90SS316 Stainless Steel2" 200DA-90AL356T6 Aluminum2" 300DA-90AL356T6 Aluminum3" 100DA-90SS316 Stainless Steel1" 400DA-90SS316 Stainless Steel4" 300DA-90SS316 Stainless Steel3" 150DA-90AL356T6 Aluminum1-1/2" 150DA-90SS316 Stainless Steel1-1/2" 600DA-90AL356T6 Aluminum6" 500DA-90AL356T6 Aluminum5" 400DA-90AL356T6 Aluminum4" RDA90600EZ316 Stainless Steel6"