Sellos de anillo tórico de goma de nitrilo NBR 4 mm sección transversal 4 mm - 442 mm ID resistente al aceite
🀅 Material: Nitrile Rubber（NBR ）. NBR Black Nitrile. The manufacturer of this item has not yet been identified. 🀅【Features】Silicone O-rings Round in Cross-section to Provide a Seal Between Cylindrical Overlapping Surfaces.