Product Information Seal: Buna-N Select a Product Part NumberMaterialSize 300D-90SS316 Stainless Steel3" 100D-90SS316 Stainless Steel1" 125D-90BRBrass1-1/4" 300D-90AL356T6 Aluminum3" 200D-90AL356T6 Aluminum2" 200D-90BRBrass2" 150D-90AL356T6 Aluminum1-1/2" 200D-90SS316 Stainless Steel2" 150D-90BRBrass1-1/2" 600D-90AL356T6 Aluminum6" 400D-90AL356T6 Aluminum4" AD90400EZ356T6 Aluminum, EZ Boss-Lock™ design4" 400D-90SS316 Stainless Steel4"