Firstly, the materials of marine rubber products should comply with relevant ISO standards or material performance standards specified by classification societies. These standards usually require rubber products to be made of natural rubber or synthetic rubber, and the material should have good properties such as oil resistance, water resistance, acid and alkali resistance.

Secondly, the physical performance requirements of marine rubber products are also very important. The classification society has established physical performance requirements for products such as rubber plates, rubber fenders, rubber pipes, and rubber seals, including hardness, tensile strength, elongation at break, wear resistance, tear resistance, and other indicators. These requirements ensure that rubber products can withstand various complex environmental and stress conditions during ship use.

In addition, the manufacturing process and testing methods of marine rubber products are also strictly regulated. Manufacturers need to produce according to relevant standards and verify the performance and quality of products through various tests. These tests include tensile testing, hardness testing, wear resistance testing, etc., to ensure that rubber products meet standard requirements.

In China, China Classification Society (CCS) is an authoritative organization responsible for formulating and supervising standards for marine rubber products. CCS will continuously update and improve the standards for marine rubber products based on international practices and the actual needs of the shipbuilding industry, to ensure the safety and reliability of ships.

In summary, the standards for customized rubber parts for Chinese ships are a comprehensive system that covers multiple aspects such as materials, physical properties, chemical properties, manufacturing processes, and testing methods. Manufacturers need to produce according to relevant standards and verify the performance and quality of products through various tests to ensure the safety and reliability of marine rubber products.

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ASTM standard:
ASTM is one of the largest international standardization organizations in the world, dedicated to developing and publishing standards for materials, products, systems, and services. For customized rubber products, ASTM has established a series of standards, including requirements for the physical properties, chemical properties, durability, manufacturing processes, and other aspects of rubber. These standards can help manufacturers ensure that their rubber customized products meet specific performance and quality requirements.

For example, The ASTM D3515 standard specifies the physical performance testing methods for vulcanized rubber used in automotive tires and other rubber products. The ASTM D412 standard specifies the testing method for the tensile properties of vulcanized rubber and thermoplastic elastomers.

FDA standards:
If rubber customized products are used for contact with food, they must comply with FDA standards. The FDA is the agency responsible for regulating food, drugs, cosmetics, and medical devices in the United States government. For rubber products in contact with food, The FDA requires them to comply with regulations such as CFR 21 177.2600. These regulations regulate the raw materials, additives, manufacturing processes, and testing requirements of rubber products to ensure that they do not contaminate food or pose a threat to human health.

In addition to ASTM and FDA standards, there are also other organizations and institutions in the United States that have developed standards related to customized rubber products, such as the Rubber Manufacturers Association (RMA) and the Society of Plastic Engineers (SPE). The standards released by these organizations can provide manufacturers with guidance and advice on the design, manufacturing, and testing of customized rubber products.

It should be noted that specific standards may vary depending on factors such as product type, application field, and region. Therefore, when customizing rubber products, it is recommended to communicate with professional manufacturers or suppliers to ensure that the products comply with relevant standards and regulatory requirements.

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Widely applicable fields: Customized rubber parts for automobiles mainly include various types such as seals, shock absorbers, and isolators. These rubber parts are applied in multiple parts of automobiles, such as the body, chassis, suspension system, and engine. They provide functions such as waterproofing, dust prevention, sound insulation, shock absorption, etc., improving the sealing performance and comfort of the car.

Market demand growth: With the rapid development of the automotive industry and the increasing demand for automotive performance from consumers, the market demand for customized rubber parts for automobiles is also constantly increasing. Especially in the field of new energy vehicles, due to the special needs of components such as batteries and motors, there is a stronger demand for customized rubber parts.

The trend of customization is obvious: With the continuous progress of automotive manufacturing technology and the personalized needs of consumers, the trend of customization of automotive customized rubber parts is also becoming increasingly apparent. Automobile manufacturers need to customize rubber parts that meet specific requirements based on vehicle models, configurations, performance, and other requirements.

Intense competition: The market for customized rubber parts for automobiles is fiercely competitive, with major manufacturers including well-known enterprises with strong research and development capabilities and global sales networks, as well as some emerging enterprises. These enterprises need to continuously improve product quality, reduce costs, and enhance service levels in order to win market share.

Environmental protection requirements are increasing: With the increasing awareness of environmental protection and the strengthening of regulations, the environmental protection requirements for customized rubber parts for automobiles are also increasing. Enterprises need to adopt environmentally friendly materials, optimize production processes, and reduce waste emissions to meet environmental requirements.

Overall, customized rubber parts for automobiles play an important role in the automotive industry, with a wide range of applications and diverse functions. With the growth of market demand and the strengthening of customization trends, the market prospects for customized rubber parts for automobiles are broad. However, enterprises also need to face fierce market competition and constantly improving environmental requirements, strengthen research and innovation, and enhance competitiveness.

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A rubber sealing ring is a circular cover composed of one or several parts, fixed on one ring or washer of a bearing and in contact with another ring or washer or forming a narrow labyrinth gap to prevent lubricating oil leakage and foreign object invasion.

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Precautions for installing and using sealing rings:
(1) Do not install in the wrong direction or damage the lip edge. If there is 50 on the lip μ Scars above m may cause obvious oil leakage.
(2) Prevent forced installation. Do not use a hammer to tap in, but use a special tool to first press the sealing ring into the seat hole, and then use a simple cylinder to protect the lip through the spline area. Before installation, apply some lubricating oil to the lips to facilitate installation and prevent burns during initial operation. Pay attention to cleanliness.
(3) Prevent overdue use. The service life of rubber seals for dynamic sealing is generally 3000-5000 hours, and new sealing rings should be replaced in a timely manner.
(4) The size of the replacement sealing ring should be consistent. Strictly follow the instructions and choose the same size of sealing rings, otherwise the requirements such as tightness cannot be guaranteed.
(5) Avoid using old sealing rings. When using a new sealing ring, it is also necessary to carefully check its surface quality to ensure that there are no defects such as small holes, protrusions, cracks, and grooves, and that it has sufficient elasticity before use.
(6) During installation, all parts of the opened hydraulic system should be strictly cleaned first, and it is best to use special tools to prevent sharp metal edges from scratching fingers.
(7) When replacing the sealing ring, it is necessary to strictly inspect the groove of the sealing ring, remove dirt, and polish the bottom of the groove.
(8) To prevent damage and oil leakage, it is necessary to operate according to regulations, and at the same time, it is not allowed to overload or operate the machine in a harsh environment for a long time

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Material analysis of rubber sealing rings used for installation on various mechanical equipment, under specified temperature and pressure, as well as different liquids and gases, in static or moving states for sealing purposes

1. Fluorine rubber: It has high temperature resistance and can be used in environments between -30 ℃ and+250 ℃. It is resistant to strong oxidants, oil, and acid and alkali. Usually used in high-temperature, high vacuum, and high-pressure environments, suitable for oily environments. Due to its various excellent properties, fluororubber is widely used in sectors such as petroleum, chemical, aviation, and aerospace.

2.Silicone rubber: It has outstanding high and low temperature resistance, maintains good elasticity in the temperature range of -70 ℃ -+260 ℃, and has advantages such as ozone resistance and weather aging resistance. It is suitable as a sealing gasket in thermal machinery. Because it has no toxicity, it can be used to make thermal insulation, insulating products and medical rubber products.

3. Nitrile rubber: It has excellent oil resistance and aromatic solvent resistance, but is not resistant to ketone, ester, chlorination and other media, so oil resistant sealing products are mainly Nitrile rubber.

4. Neoprene: It has good oil resistance, solvent resistance, chemical medium resistance and other properties, but is not resistant to aromatic oil. It is characterized by excellent weather aging and ozone aging resistance. In production, Neoprene is usually used to make door and window sealing strips, diaphragms and general vacuum sealing products;

5. EPDM: It has good temperature resistance, weather resistance, and ozone aging performance, and is usually most widely used in door and window sealing strips and the automotive industry.

6. Polytetrafluoroethylene composite gasket is a new type of sealing material composed of polytetrafluoroethylene and high-quality complete rubber using a special production process. It combines the excellent characteristics of polytetrafluoroethylene and rubber, making the product not only excellent corrosion resistance, but also high-temperature resistance, non-toxic, adhesive resistance, and good elasticity and sealing.

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3. Silicone rubber series
   Equipped with advanced testing equipment and a clean and dust-free workshop. The product is widely used in industries such as electronics, medical devices, and food.
   A variety of domestic and imported silicone rubber types are selected, with a temperature range of -60 ° C to+200 ° C. The product can meet the requirements of oil and steam resistance, medical and edible transparency, high strength, flame retardant, conductive silicone rubber, etc.
4. Fluorine rubber series products
   It is widely used in automobile, shipbuilding, military industry, electronic appliances and other industries. The working temperature is -40 ℃+200 ℃, resistant to fuel oil, high temperature, Freon, Superheated water, steam and excellent chemical corrosion resistance. Customers are welcome to purchase and customize.
5. PTFE series products
   PTFE gaskets have high temperature resistance and corrosion resistance, and do not react with concentrated acids, alkalis, or strong oxidizing agents even at high temperatures. They have been widely used as sealing materials and are suitable for sealing devices on pipelines, flanges, reactors, valves, and containers. Special shaped parts are produced according to user design drawings.
6. Various irregular miscellaneous parts
   The material selection includes nitrile, natural, fluorine rubber, silicone, etc. It is widely used in industries such as automobiles, machinery, valves, etc. Different types of rubber can meet the temperature range of -50 ℃ -+200 ℃. The product has good wear resistance and flexibility, and can be designed according to requirements.
7. Metal rubber sealing ring
   The material is metal rubber, which is a homogeneous elastic porous material that not only possesses the elasticity of rubber, but also has excellent properties of metal, which can work at temperatures of -150~800 ℃. At the same time, it can also bear pressure and has a dual function of bearing pressure and sealing within a certain range. Its purpose:
   (1) Fiberglass pipes; Glass fiber reinforced plastic sand pipe; Glass fiber reinforced plastic top pipe; Cable protection tube; Flue gas desulfurization pipe; Coal mine gas drainage pipe; Desulfurization and dust removal pipes for power plants;
   (2) Sealing of municipal water supply and drainage pipelines;
   (3) Sealing of various process pipelines (petroleum, chemical, metallurgical, papermaking, sewage, seawater desalination, food brewing and beverage processing, medicine, etc.);
   (4) Sealing of sewage collection and transportation pipelines and reclaimed water pipelines;
   (5) Sealing of drinking water transmission main pipes and distribution pipes;
   (6) Sealing of oilfield water injection pipes;
   (7) Sealing of hot water delivery pipes and hot spring water delivery pipes.

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1. O-ring series
   It has a variety of materials such as fluororubber, butadiene acrylonitrile rubber, silica gel, Ethylene propylene rubber, double fluororubber and other products, which are widely used in various machinery, resistant to various petroleum based oils and various chemical media: the use of non rubber types can meet the temperature range of -60 ℃ -+200 ℃ (the FFKM of double fluororubber can reach more than 300 degrees after a specific vulcanization method), and the use pressure range:<10MPa (hydraulic), The expansion rate of nitrile rubber and gasoline resistant (90, 93, 97) with a pressure drop of<1MPa (pneumatic) and<16MPa (static seal) is 0.
2. Y-shaped sealing ring
   Products made of various materials, such as fluororubber, nitrile rubber and chlorine rubber, are widely used in hydraulic, mechanical, pneumatic and other industries. The resistant petroleum based oil has excellent wear resistance, and different rubber types can meet the temperature range of -60 ℃ -+200 ℃.
3. V-shaped sealing ring
   It is an axial acting elastic rubber sealing ring used as a non pressure seal for rotating shafts. The sealing lip has good mobility and adaptability, can compensate for large tolerances and angle deviations, can prevent internal grease or oil from leaking out, and can also prevent external splashing or dust intrusion.
4. YX type sealing ring for holes
   Brief Description Product Usage: Used for sealing pistons in reciprocating hydraulic cylinders. Scope of application: TPU: general hydraulic cylinder, general equipment hydraulic cylinder. CPU: Hydraulic cylinders for construction machinery and high temperature and high pressure cylinders. Material: polyurethane TPU, CPU, rubber Product hardness: HS85 ± 2 ° A Working temperature: TPU: -40~+80 ℃ CPU: -40~+120 ℃ Working pressure: ≤ 32Mpa Working medium: hydraulic oil, emulsion
5. Retaining ring for YX hole
   Brief description of product usage: This standard is applicable to the use of YX type sealing rings when the working pressure of the oil cylinder is greater than 16MPa, or when the oil cylinder is subjected to eccentric force, it serves as a protective sealing ring. Working temperature: -40~+100 ℃ Working medium: hydraulic oil, emulsion, aquatic product hardness: HS92 ± 5A Material: PTFE

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