Rubber O Ring --We have various rubber O-rings, such as NBR, EPDM, SIL, FKM, ACM, CR, HNBR, FVMQ, etc. --Our usual colors are black, white, brown, red, green, blue and yellow. --We can also customize the color according to the color number. --We can provide any hardness in the range of 10-90 Shore A. 1. Rubber O-ring Introduction It is rubber ring with O-shaped cross section, it has high elasticity, insulation and long service life. It is easy to manufacture, inexpensive and reliable, so it is commonly used in machinery manufacturing, automotive,electrical, medical and other industries,and plays the role of sealing, insulation, cushioning, fixing, etc. Therefore, rubber O-ring is one of the most commonly used seals in global machinery. 2. Raw Material Selection Rubber O-ring has a variety of raw materials. Different materials have different properties and prices. The order of material prices is: NBR<SIL<EPDM<CR<ACM<FKM<HNBR<FVMQ We should choose the appropriate material according to its use environment. The following table is the main characteristics of the material. If you want to know more about a material, please feel free to contact us. Rubber Characteristic Application NBR Oil resistance Oil tank, lubricating oil tank, mechanical equipment, use environment without special requirements EPDM Strong water and steam tightness Water pump, bathroom, automobile brake system SIL Good elasticity, wide temperature range, wide practicability Electronics, food and medical industry FKM High temperature resistance, chemical resistance Automobile engine, fuel system, mechanical equipment of chemical plant ACM High temperature resistance (weaker than FKM) Automobile engine, fuel system HNBR Low temperature resistance Air conditioning and refrigeration industry CR Flame retardancy Ozone environment, flame retardant products FVMQ All performance is excellent Aerospace, high-end automobile and other high-end fields Our factory has been in the rubber seal manufacturing service for almost 20 years. Especially O-rings and custom rubber parts in Auto, Medical and Sanitary industries. 1. Top quality and sophisticated rubber products, the minimum dimensional tolerance can reach &plusmn; 0.05mm. 2. A large number of ready-made O-ring molds, which can almost meet all sizes you need. 3. We can provide OEM/ODM services and produce non-standard rubber parts according to your samples or PDF, STP, DWG drawing files. 4. Raw material inspection before production and 100% product inspection after production. 5. Have our own laboratory and a variety of testing equipment, can issue Rubber Physical Property reports. 6. We can provide you with free samples before order. Our factory has passed IATF16949:2016 quality system certification. Our products and raw materials have RoHS, PAHs, REACH and FDA certifications. Q1. What is the normal lead time? A: Average lead time for samples is 3-5 days, production time after sample approval is 2-3 weeks. If tooling is involved, the lead time of production tooling is 10-15 days. Q2. What is your standard packing? A: All the goods will be packed by PE bag inside and carton outside. Special packing method can be accepted when needed. Q3. Which payment way is workable? A1: Irrevocable L/C, Cash, PayPal, Credit card and T/T transfers. A2: 30% deposit in advance, 70% balance before shipment after goods are ready. If tooling fee is involved, 100% tooling fee in advance. A3: Payment way can be negotiated. Q4. How do you ensure the quality of your products? A1: We mainly use ASTM D2000 standard to define the quality of the rubber materials. A2: We only use rubber raw materials cer