Spherical Rubber Core Annular Blowout Preventer FKM 70 Dust Ring

Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of spherical rubber core annular blowout preventer fkm 70 dust ring in China, also supports customized service. Please feel free to buy high quality spherical rubber core annular blowout preventer fkm 70 dust ring for sale here from our factory.

Spherical rubber core annular blowout preventer FKM 70 dust ring

1. FKM 70 dust seal

In key industrial fields such as oil and gas extraction, blowout preventers are core equipment to ensure operational safety and environmental stability. It can effectively curb the occurrence of high-pressure blowout accidents, prevent uncontrolled leakage of oil and gas, and avoid catastrophic consequences. As an important protective component of the blowout preventer, the FKM 70 dust ring has unique advantages. Based on fluororubber (FKM) material, it exhibits excellent high-temperature resistance and can operate stably in a temperature environment of up to 70°C (which can be fine-tuned according to the specific formula), effectively resisting the impact of high-temperature oil and gas on sealing performance. Strong chemical corrosion resistance enables it to resist the complex chemicals contained in crude oil and natural gas and various corrosive media in the chemical production environment, ensuring that the dust ring structure is intact and the seal is reliable. In addition, the FKM 70 dust ring also has good mechanical strength and wear resistance. Under long-term pressure and friction conditions, it can still maintain efficient dust and sealing functions, escorting the stable operation of the blowout preventer, significantly extending the service life of the equipment and reducing maintenance costs.

Product name : Spherical rubber core annular blowout preventer FKM 70 dust ring.

Product types and specifications : The product type is suitable for spherical rubber core annular blowout preventers. A variety of specifications are available, covering different inner and outer diameters to meet the needs of various blowout preventer models and specific engineering applications. From standard general specifications to special customized sizes, we can ensure accurate adaptation to different equipment configurations.

Applicable industries : Mainly used in oil exploration and exploitation, natural gas production and transportation, chemical industry and other industries that have extremely strict requirements on equipment sealing performance and safety, and play an indispensable role in the key operation links of these industries.

• Advantages of FKM (fluororubber) :

High temperature resistance : The specially formulated FKM 70 dust seal can withstand a high temperature environment of about 70°C. Within this temperature range, the physical properties of the material remain relatively stable, and there will be no softening, deformation or reduction in sealing performance due to high temperature, thereby ensuring reliable sealing of the blowout preventer under high temperature oil and gas conditions.

Chemical corrosion resistance : It has excellent tolerance to common corrosive gases such as hydrogen sulfide and carbon dioxide in oil and natural gas, as well as various organic and inorganic components in crude oil. In the chemical industry, it can effectively resist the erosion of various chemical substances such as acids, alkalis, and salts, maintain the structural integrity and sealing effect of the dust ring, and prevent the risk of leakage caused by chemical corrosion.

Excellent mechanical strength and wear resistance : With high tensile strength and tear strength, the blowout preventer can maintain structural stability and is not prone to rupture or damage even when it is subjected to high pressure impact or frequent operation. Its good wear resistance ensures that the sealing surface can continue to maintain a good condition during long-term friction contact with other components, reducing the possibility of sealing failure due to wear and effectively extending the service life of the dust ring.

Advantages over other materials : Compared with traditional nitrile rubber, FKM 70 dust seals have obvious advantages in high temperature resistance. Nitrile rubber may deteriorate at relatively low temperatures, while FKM 70 can work normally in higher temperature environments. In terms of chemical corrosion resistance, FKM can withstand more types and higher concentrations of corrosive media, while the corrosion resistance range of nitrile rubber is relatively narrow. In terms of mechanical strength and wear resistance, FKM 70 can withstand greater stress and friction, perform more reliably under harsh working conditions, have a longer service life, and provide more lasting and stable protection for blowout preventers.

Structural features 

Advantages of the spherical rubber core design : The spherical rubber core structure enables the dust ring to automatically adapt to the sealing surface shape and pressure changes inside the blowout preventer after installation. Under different pressure conditions, the spherical rubber core can evenly disperse the pressure and avoid local stress concentration, thereby ensuring the stability and reliability of the seal. At the same time, this design is easy to install and disassemble, making it convenient for maintenance personnel to perform equipment maintenance and dust ring replacement operations.

Sealing principle of annular structure : The annular FKM 70 dust ring fits tightly on the corresponding sealing part of the blowout preventer to form a continuous sealing barrier. When there is pressure inside the blowout preventer, the dust ring is tightly squeezed with the sealing surface under the pressure to prevent external dust and impurities from entering the blowout preventer, and prevent the internal oil and gas and other media from leaking out. The design of its annular structure ensures effective sealing within a 360-degree range, providing all-round protection for the blowout preventer.

Size and specifications : customized standards;

Applicable equipment and occasions : Widely used in the sealing protection of various types of hydraulic blowout preventers, oil wellhead devices, and high-pressure reactors in chemical production. During oil drilling, the FKM 70 dust ring is installed on the blowout preventer, which can effectively prevent dust, dirt and other impurities around the wellhead from entering the equipment during operation, avoiding seal failure and equipment failure caused by impurity accumulation. In the high-pressure reactor blowout prevention device of chemical production, it can resist the erosion of corrosive gases and liquids generated during the reaction process, and prevent external impurities from contaminating the reaction system, ensuring the safety, stability and efficiency of the reaction process.

Performance parameters Spherical rubber core annular blowout preventer FKM 70 dust ring

Installation precautions : Before installation, make sure that the installation area of the blowout preventer is clean, smooth, and free of any oil, impurities, burrs or scratches. Use special installation tools and follow the correct installation method and sequence to avoid over-stretching or twisting the dust ring to prevent damage to its structure. During installation, pay attention to the installation direction of the dust ring to ensure that its sealing lip faces the correct direction to ensure the best sealing effect. After installation, a preliminary sealing performance check is required, which can be verified by an appropriate pressure test method.

Recommendations for regular inspection and replacement : It is recommended to inspect the FKM 70 dust ring regularly. The inspection cycle is generally [recommended cycle, such as every 3 months], which can be adjusted appropriately according to factors such as the frequency of use of the equipment and the severity of the working environment. The inspection content includes whether the appearance of the dust ring shows signs of wear, cracks, aging, deformation, etc., and whether there are signs of leakage in the sealing part. If any abnormality is found, the dust ring should be replaced in time. According to actual use experience and test data, under normal working conditions, the service life of the FKM 70 dust ring is about [estimated service life, such as 1-2 years], but under harsh working conditions such as high temperature, high pressure, and strong corrosion, the inspection cycle should be shortened and the dust ring should be replaced in advance to ensure the safe operation of the equipment.

Storage conditions and recommendations : When storing, choose a dry, well-ventilated environment with a suitable temperature, and avoid direct sunlight, high temperature, high humidity or places with volatile chemicals. Store the FKM 70 dust ring in its original packaging to prevent it from contact with sharp objects, metal products or other items that may cause damage to it.

The FKM 70 dust seal for annular blowout preventer with spherical rubber core occupies an extremely important position in blowout preventer equipment in the oil, gas and chemical industries due to its outstanding high temperature resistance, strong chemical corrosion resistance, excellent mechanical strength and wear resistance. It not only provides reliable dustproof and sealing functions for the blowout preventer, effectively guarantees the normal operation and operation safety of the equipment, but also significantly reduces the maintenance cost and downtime of the equipment, and improves production efficiency and economic benefits. We sincerely recommend customers to choose this high-quality FKM 70 dust seal to inject stable and reliable protection into your industrial production activities, ensuring that your equipment always maintains efficient and safe operation under complex and harsh working conditions.

• Is the high temperature resistance limit of FKM 70 dust seal absolute?

Not absolutely. Although its design temperature resistance is about 70℃, the actual high temperature resistance performance may fluctuate due to the combined influence of other factors in the use environment, such as pressure, chemical media, etc. When approaching or exceeding the design temperature, it is necessary to pay close attention to the performance changes of the dust seal and strengthen monitoring and maintenance.

• Does the FKM 70 wiper withstand all chemicals in chemical environments?

Although it has good resistance to most common chemical corrosive substances, it cannot be guaranteed to withstand all chemicals. For some special, extreme chemicals or their high concentration mixtures, further evaluation or selection of a more specially formulated FKM wiper may be required. Before use, it is recommended to conduct compatibility testing on the actual chemical media in contact.

• How to judge whether the FKM 70 dust seal needs to be replaced?

Mainly by regularly checking its appearance for obvious signs of wear, cracks, aging, deformation, etc., and checking whether there is leakage in the sealing part. If any of the above abnormal conditions are found in the dust seal, or abnormal parameters related to the seal change during the operation of the equipment (such as pressure drop, leakage alarm, etc.), the FKM 70 dust seal should be replaced.

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