: - 6PCS: 30x3.1 mm or 1.181x0.122 in - 25PCS: 14x1.9 mm or 0.551x0.075 in - 25PCS: 13x1.9 mm or 0.512x0.075 in - 25PCS: 12x1.9 mm or 0.473x0.075 in - 40PCS: 11x1.9 mm or 0.433x0.075 in - 40PCS: 10x1.9 mm or 0.394x0.075 in - 40PCS: 9x1.9 mm or 0.354x0.075 in - 50PCS: 8x1.9 mm or 0.315x0.075 in - 50PCS: 7x1.9 mm or 0.276x0.075 in - 50PCS: 6x1.9 mm or 0.236x0.075 in Feature: 1. Silicone red o-ring assortment kit can stand high temperatures, working temperatures -40 (-40) to +248 (+120). 2. Our red O-rings have a wide range of applications and are easy to install. 3. High quality, no defects, and safe products bring convenience to your life, the favorable price also for you to save money. 4. The packaging of the transparent box is convenient for you to take the product and store it. 5. One of the main advantages of O-rings is their excellent sealing ability, which makes them ideal for liquids or gases to prevent leakage.6. O-rings are also cost-effective and require minimal maintenance, and their versatility is used in a wide variety of industries including automotive, household, industrial, and medical.7. Your pipes, valves, and other components remain sealed even under high pressure and extreme temperatures. You can avoid downtime and repairs due to leaks, increasing productivity and profitability.