Product Name: Seal Group Standard: Standard Material: metal Style: Floating Seal Shape (For Gasket): Ring Gasket Function: Rotary Sealing Application: Equipment Seal HS Code: 8484100000 Product Description The item is XY model, they have two different surfaces.Life time: 5000-8000hoursThe working surface hardness: HRC 60-72Roughness of abrasive surface: GB1031-68, Ra0.02- 0.032 µ MWide range of temperatrue of application: From: -50Cto 120CITEMODIDHHF0820 X99.582.220.5HF0820 Y99.582.210.5