FKM/HNBR/VITON/FLS/NR/ACM/FDA Food Grade Sealing Ring

Company Introduction:

Bomingyang Technology Co., Ltd. is located in Xi'an, Shaanxi Province, and is a technology-based enterprise integrating the research, production, and sales of rubber seals. The company mainly produces various rubber seals such as O-rings, X-rings, Y-rings, flat washers, V-rings, ED rings, C-rings, rubber strips, rubber balls, rubber retaining rings, and miscellaneous rubber parts.

1. NBR Rubber Seals
Suitable for use with petroleum-based hydraulic oils, glycol-based hydraulic oils, diester-based lubricants, gasoline, water, silicone grease, silicone oil, and other media. Currently the most widely used and cost-effective rubber seals. Not suitable for polar solvents such as ketones, ozone, nitro hydrocarbons, MEK, and chloroform. General operating temperature range: -40~120°C.

2. HNBR Hydrogenated Rubber Seals
Excellent resistance to corrosion, tearing, and compression deformation. Good resistance to ozone, sunlight, and weathering. Better wear resistance than rubber. Suitable for washing machinery, automotive engine systems, and refrigeration systems using the new environmentally friendly refrigerant R134a. Not recommended for use in alcohols, esters, or aromatic solutions. General operating temperature range: -40~150°C.
3. SIL Silicone Rubber Seals
Excellent heat resistance, cold resistance, ozone resistance, and atmospheric aging properties. Good insulation performance. However, tensile strength is poorer than general rubber and not oil-resistant. Suitable for household appliances such as electric water heaters, electric irons, and microwave ovens. Also suitable for various products in contact with the human body, such as kettles and water dispensers. Not recommended for most concentrated solvents, oils, strong acids, and ***. General operating temperature range: -55~250°C.
4. VITON Fluorocarbon Rubber Seals
Superior high-temperature resistance compared to silicone rubber. Excellent weather resistance, ozone resistance, and chemical resistance. Poor cold resistance. Resistant to most oils and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons, and animal and vegetable oils. Suitable for diesel engines, fuel systems, and sealing needs in chemical plants. Not recommended for ketones, low molecular weight esters, and nitrated mixtures. General operating temperature range: -20~250°C.
5. FLS Fluorosilicone Rubber Seals
Combines the advantages of fluorocarbon rubber and silicone rubber. Excellent oil resistance, solvent resistance, fuel resistance, and high and low-temperature resistance. Resistant to oxygenated compounds, aromatic solvents, and chlorinated solvents. Generally used in aviation, aerospace, and military applications. Not recommended for use in ketones and brake fluids. General operating temperature range: -50~200°C.
6. EPDM Ethylene Propylene Diene Monomer Rubber Seals
Excellent weather resistance, ozone resistance, water resistance, and chemical resistance. Can be used with alcohols and ketones, and also suitable for high-temperature steam environments. Suitable for bathroom equipment, automotive radiators, and automotive brake systems. Not recommended for food applications or use in mineral oils. General operating temperature range: -55~150°C.

7. CR Neoprene Rubber Seals
Excellent resistance to sunlight and weathering. Resistant to refrigerants like ammonia, dilute acids, and silicone-based lubricants, but swells significantly in mineral oils with low aniline points. Prone to crystallization and hardening at low temperatures. Suitable for environments exposed to atmosphere, sunlight, and ozone, as well as various flame-resistant and chemically resistant sealing applications. Not recommended for strong acids, nitro hydrocarbons, esters, chloroform, and ketones. General operating temperature range: -55~120°C.
8. IIR Butyl Rubber Seals
Excellent gas tightness. Good heat resistance, sunlight resistance, ozone resistance, and insulation properties. Resistant to polar solvents such as alcohols, ketones, and esters. Can be used with animal and vegetable oils or oxidizable substances. Suitable for chemical-resistant or vacuum equipment. Not recommended for use with petroleum solvents, kerosene, or aromatic hydrocarbons. General operating temperature range: -50~110°C.
9. ACM Acrylate Rubber Seals
Excellent oil resistance. Good high-temperature resistance and weather resistance, but mechanical strength, compression set, and water resistance are slightly inferior. Generally used in automotive transmission systems and power steering systems. Not suitable for hot water, brake fluid, or phosphate esters. General operating temperature range: -25~170°C.
10. NR Natural Rubber Seals
Rubber products have good wear resistance, elasticity, tensile strength, and elongation. However, they are prone to aging in air, become sticky when heated, and swell or dissolve in mineral oils or gasoline. Resistant to alkalis but not strong acids. Suitable for use in automotive brake fluids, ethanol, and other liquids containing hydroxide ions. General operating temperature range: -20~100°C.
11. PU Polyurethane Rubber Seals
Polyurethane rubber has excellent mechanical properties, with wear resistance and high-pressure resistance far superior to other rubbers. Good aging resistance, ozone resistance, and oil resistance, but prone to hydrolysis at high temperatures. Generally used in high-pressure and wear-resistant sealing applications, such as hydraulic cylinders. General operating temperature range: -45~90°C.
12. Metal Rubber Seals
Made from stainless steel wire without any rubber components, offering strong performance characteristics. For example, they can operate normally in high vacuum, high and low temperatures, strong radiation, and various corrosive environments. The seal surface is made from different materials such as stainless steel, copper, or PTFE depending on the application, with the encapsulated metal rubber component serving as the core, offering high sealing strength, effectiveness, and reusability. The seal core is made from metal wires of different diameters and densities, suitable for various pressure conditions. General operating range: -80~800°C. Due to high costs, these seals are relatively expensive. However, their excellent performance and wide range of applications have gained widespread recognition.

After-Sales Service:
All company products come with material certification. Sincerity wins trust, patience gains understanding; details determine success, service creates value. Service must be integrated throughout the entire enterprise, not just limited to after-sales. Customized packaging and shipping methods are available based on customer requirements, meeting different clients' cleanliness standards for products. Whenever you need, I am ready to provide satisfactory products. If fortunate enough to become your supplier, you need not worry about professionalism, quality, delivery, or service. Cooperation will be smooth and worry-free with a qualified supplier.