... metal bellow mechanical seal,which most of mechanical seal are equivalent to Burgmann mechanical seal, John Crane mechanical seal, Pillar ... 502, we have some in the stock. We also provide standard seal face such as G60, G50, G6, G4, G9 ... : water, oil, acid, alkali, etcTemperature: -20 to 180 centigrade degreePressure: Up to 10barCombined MaterialsStationary ring(seat): ceramic/sic/TCRotary ring ...