- Complete set of 420 black nitrile rubber O-rings, ideal for plumbing, automotive, and general repairs - Includes 24 different sizes to cover a wide variety of sealing needs - Made of nitrile butadiene rubber, offering high resistance to heat, oils, water, and most fluids - Excellent elasticity, tear resistance, and dimensional stability under pressure - Transparent and labeled organizer box for easy selection and storage - Suitable for faucets, pumps, doors, windows, electrical appliances, and drainage systems - Prevent leaks and protect wiring by avoiding direct contact between metals - Do not contaminate or damage contact surfaces, ensuring a safe and durable seal - Withstand temperatures up to 120 °C, suitable for professional and industrial use