Image Product brochure for EnviroStar 400 with imperial and metric measurements. Pre-compressed ring-set made of expanded graphite and reinforcement to protect against extrusion. ENVIROSTAR400 Metric Datasheet ENVIROSTAR400 Imperial Datasheet Find More Product Resources Find more EnviroStar 400 resources Related Products Pages Pre-compressed ring-set made of expanded graphite and reinforcement to protect against extrusion