High Temperature Resistance: Our Viton O rings are made of Fluorocarbon(FKM)75A durometer material which can withstands continuous operation up to 200°C (392°F) and short-term exposure to higher temperatures(250°C/482°F) And these are brown so then you can easily tell it is a viton o-ring 30 Comprehensive Sizes: Covers common sizes(ID from 3mm to 44mm, OD from 7mm to 52mm) to meet sealing needs in mechanical equipment repair, plumbing pipeline installation, and household appliance maintenance scenarios, eliminating the need for repeated purchases when handling different projects so that you can fix the leakage problem most time Specific Dimensions: 18pcs 7*2mm and 8*2mm, 5 sizes 16pcs each:9*2mm,10*2mm,11*2mm,12*2mm,14*2mm, 7sizes 13pcs each: 15*2.5mm,17*2.5mm,19*2.5mm,21*2.5mm,22*2.5mm,24*2.5mm, 13sizes 12pcs each:25*3mm,26*3mm,28*3mm,30*3mm,31*3mm,33*3mm,34*3mm,36*3mm,38*3mm,39*3mm,41*3mm,42*3mm,44*3mm, 3isezs 9pcs each:46*4mm,49*4mm,52*4mm Clear Labeling: Each FKM O-ring has its size and quantity clearly marked below it.convenient for professional repairmen working on HVAC systems, refrigeration units, and industrial machinery. Confirm specifications without opening the package, saving selection time during busy work Broad Applicability: Viton (FKM) seals are extensively used in fuel systems, hydraulic systems, and industrial machinery where dependable performance under extreme conditions is essential. Their adaptability and long service life make them a premier option for high-performance sealing Ideal Replacement: Excellent for elevated engine temperatures or cooler lines. These Viton rubber O-rings kit also effectively seal the two adjustable tubes of barrel pumps. Resolve your engine or pump leaks and injection issues with complete confidence and you don't need to take more time and energy to go the store These viton O-Ring kit is made of high quality hardness brown fluorocarbon material, It is more resistant to high temperature, oil, acid and alkali, and is suitable for a variety of chemicals and special media occasions, with the working temperature ranging from -15°F (-26°C) to +446°F (+230°C).Made of premium fluororubber, resistant to high/low temperatures and chemical corrosion. Ensures stable sealing and extends equipment lifespan.Size parameters and quantities printed on small boxes. Confirm specifications without opening, saving selection time. FKM/Viton 75A O-rings exhibit good resistance to permanent deformation under prolonged compression, helping to maintain a reliable seal over the long term. The 75A hardness offers a perfect compromise. It is soft enough to ensure excellent sealing force and conformability to gland surfaces for low-leakage performance, yet firm enough to provide good resistance to extrusion and mechanical damage in dynamic applications or under high pressure.Otherwise O-rings remover is lightweight and easy to hold, with optimized operation angle. Labor-saving and hand-friendly, easy for beginners to use. Our Viton o rings kit covers common sizes to meet needs in mechanical maintenance, pipeline sealing.automative fuel,a/c,or cooling system and other scenarios, no need for repeated purchases. Our viton O-Ring kits are made of high quality hardness brown fluorocarbon material, It is more resistant to high temperature, oil, acid and alkali, and is suitable for a variety of chemicals and special media occasions, with the working temperature ranging from -15°F (-26°C) to +446°F (+230°C). This Fluororubber O Rings Kit contains 30 sizes with ID: 3mm，4mm，5mm，6mm，7mm，8mm，10mm，11mm，12mm，14mm，16mm，17mm，19mm，20mm，22mm，24mm，25mm，27mm，28mm，30mm，32mm，33mm，35mm，36mm，38mm，41mm，44mm Our Viton O rings are resistant to high/low temperatures and chemical corrosion. Perfect for sealing applications in industrial ovens, chemical processing equipment, and automotive cooling systems, ensuring stable sealing and extending equipment lifespan The rich size combination fits automobiles (engine gaskets, fuel system seals), household appliances (washing machine water seals, refrigerator door gaskets), and industrial machinery (compressor seals, hydraulic cylinder rings), providing a one-stop solution for O-ring replacement needs.