✨️Product Description✨ myoseya O-rings Nitrile Rubber Metric Seal Gasket Circular Toric Heat Resistant Oil Resistant Mechanical Repair Black 21*2.5mm 50pcs 【Size】 Outer diameter 21mm, width 2.5mm. Color: Black. 【Material】 Nitrile rubber. High temperature resistance, acid resistance, corrosion resistance, and abrasion resistance. 【Features】 Standard nitrile rubber with a wide temperature range from -4℉ (-20°C) to 212℉ (100°C). 【Applications】 Widely used in high-pressure washers, filters, pumps, water hoses, piping pipes, maintenance, automobiles, and machinery. --------------------------------- ✨Notice✨ * I am selling an item I received unused. * Immediate purchase and bulk purchases are welcome! * Please understand that the item will be shipped in simple packaging. * Please check the actual photos for the condition. (Opened once for photography and inspection) Returns and claims after the arrival of the product will generally be refused, but we will respond depending on the situation. 8-21 0381 ★★★★★