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2M9780 19.18*2.46 2K8199 2K2939 2J6274 Hydraulic NBR Rubber O-ring Seal Kit 2J0157 The working temperature is NBR:-30°C~+120°C FKM:-20°C~+200°C PU: -45°C~+110°C PTFE:-55°C~+260°C Silicone:-60°C~+230°C ...