English Advantages of core sealing performance: reliable protection suitable for multiple scenarios
1. All-area sealing adaptability: high-elastic medical-grade/industrial-grade silicone is used, and the Shaw's hardness is 30-70A can be customised. It can tightly fill the irregular gaps of the pipe interface (such as threaded gaps, flange surface bumps), and realise the three-in-one protection of gas seal, liquid seal and chemical seal, and adapt to water, gas, oil, acid and alkali solutions, etc. With a variety of media, the leakage rate can be as low as 10−7 Pa·m³/s.
2. Extreme environmental tolerance: the temperature tolerance range covers -60℃ (ultra-low temperature silicone) to 300℃ (high-temperature-resistant silicone), which can withstand the high-temperature and high-pressure of steam pipelines and the low-temperature impact of cold-chain pipelines; at the same time, it is resistant to ultraviolet, ozone and oxidation, and it is not easy to age and brittle in outdoor open-air pipelines or underground humid environments, and the service life The fate is 3-5 times that of ordinary rubber seals.
3. Excellent chemical compatibility: The formula can be customised for different media (such as oil-resistant silicone, acid- and alkali-resistant silicone), does not react with organic solvents, corrosive gases (such as chlorine, hydrogen sulphide), food-grade fluids (such as milk, beverages), no dissolved matter pollution, and complies with FDA, USP Class VI, etc. Industry standards, suitable for food processing, pharmaceutical and chemical industry, municipal water supply and other special scenarios.
Structure and installation features: flexible adaptation + convenient operation
1. Multi-form structural design: In addition to conventional O-type and flat-pad type, cross-sectional shaped models (such as Y-type, V-type, U-type) and composite structure models (such as silicone fluorine-corine, silicone sandwich cloth) can be customised - Y-type is suitable for self-tightening sealing of high-pressure pipelines, fluorine-clad type enhances wear resistance, and the sandwich cloth type improves tear strength and meets different pipe diameters. (DN15-DN1000+) and the requirements of interface types (threads, flanges, sockets).
2. Strong installation fault tolerance: the flexibility of silicone can be compatible with ±2mm pipe installation deviations (such as flange misalignment, pipe diameter is slightly not round), and sealing can be realised without precise calibration; some products have their own positioning grooves or back glue to avoid displacement during installation, and novices can also operate quickly to reduce dependence on professional construction.
3. Convenient disassembly and maintenance: no adhesion, no residual glue layer or damage to the pipe interface during disassembly; lightweight design (single weight 5-500g), no need for large tools for replacement, especially suitable for maintenance of narrow spaces (such as wall pre-buried pipes, equipment internal pipes).
Additional functional value: multi-dimensional protection beyond sealing
1. Buffering and noise reduction: Use the elastic deformation of silicone to absorb pipe vibration (such as mechanical vibration and fluid impact vibration when the pump is running), reduce the metal friction noise at the interface, while avoiding bolt loosening caused by vibration and reducing the maintenance frequency of the pipeline system.
2. Anti-corrosion and protection: Silicone material isolates the metal surface of the pipe interface from contact with the medium and air, prevents electrochemical corrosion and rust, and prolongs the service life of pipes (especially carbon steel and cast iron pipes); for plastic pipes, it can avoid cracking of the interface caused by rigid collision.
3. Customised solutions: support to adjust hardness, colour (such as red warning model, transparent food-grade model), size tolerance (accuracy up to ±0.05mm) according to customer needs, and can add flame retardant (UL94 V0 level), conductive, antibacterial and other functions, suitable for nuclear power, aerospace, medical equipment and other high-end Scene.
Additional functional value: multi-dimensional protection beyond sealing
1. Low cost of the whole life cycle: Although the procurement cost of a single strip is higher than that of ordinary rubber, due to its ageing resistance and frequent replacement, the comprehensive use cost (including labour and downtime losses) can be reduced by more than 40%; and it can be recycled, which meets environmental protection requirements.
2. Industry-wide compliance certification: It has passed the EU REACH, RoHS, US NSF and other international certifications, meets the environmental protection, food safety and industrial safety standards of various countries, and can be directly used for export equipment or transnational engineering projects.
FAQ:
I. The problem of sealing failure
Q: What is the possible reason for the frequent leakage of liquid/air leakage at the pipeline interface?
A: Priority is given to checking whether the sealing ring is ageing (hard, cracked), size mismatch (too thin/thin) or misaligned installation (not fully embedded in the sealing groove); if the sealing ring is intact, it is necessary to check whether the pipeline interface is deformed (such as flange warping) or uneven bolt tightening force.
Q: When transporting oily/corrosive media, the sealing ring will fail quickly. How to solve it?
A: Ordinary silicone is not resistant to oil and strong corrosion, and it is necessary to replace the special formula sealing ring (such as oil-resistant silicone, fluoro silicone); at the same time, confirm the compatibility of the sealing ring material and the medium (you can provide the media parameters to consult the manufacturer for the suitable model).
II. Ageing and loss problems
Q: The sealing ring is sticky and swollen after 1 year of use. Is it a quality problem?
A: Not necessarily. If long-term exposure to high temperature (>200℃), oily media or strong solvents, ordinary silicone will accelerate swelling and ageing; if this problem occurs in a normal temperature and clear water environment, it may be poor quality recycled silicone, and it needs to be replaced with genuine products that meet food-grade/industrial-grade standards.
Q: The sealing ring of outdoor open-air pipes is more easily damaged than that of indoor pipes. How to extend the service life?
A: Choose an outdoor special silicone seal with anti-UV and anti-ozone components; at the same time, regularly clean the dust and oil on the surface of the seal to avoid excessive heating of the pipes at the direct sunlight (the insulation layer can be wrapped to assist in protection).
III. Installation and adaptation issues
Q: After the sealing ring is installed in the flange interface, it is squeezed, deformed or even broken. How to deal with it?
A: The reason is that the cross-section of the sealing ring is too large, or the depth of the flange sealing groove is insufficient. It is necessary to replace the adaptor model with a smaller cross-section, or ensure that the compression of the sealing ring is controlled at 20%-30% (overcompression is easy to break, and insufficient compression is poor).
Q: The pipe interface is shaped (non-circular). Can the silicone seal be used?
A: OK. It is necessary to customise special-shaped silicone sealing rings (such as square, oval, irregular shapes), and provide the manufacturer with accurate dimensional drawings of the interface to ensure that the sealing ring and the interface contour are fully matched; it is recommended to use sealant to enhance the sealing during installation.
IV. Maintenance and replacement issues
Q: The old sealing ring is stuck in the sealing groove and it is difficult to clean up. What's the best way?
A: Gently peel off the residual part with a hard plastic sheet (to avoid scratching the interface), and then wipe the glue layer in the tank with alcohol or special glue remover; if the residue is thick, you can first soak the interface with hot water (silicone softened by heat) before cleaning.
Q: What details should be paid attention to when replacing the sealing ring?
A: 1 Clean the oil, impurities and rust in the sealing tank; 2 Check whether there are burrs on the pipe interface (need to be polished and smooth); 3 Avoid pulling deformation when installing the new sealing ring, and ensure that the bolts are evenly tightened after the interface is aligned (tightened diagonally).
V. Special scenario problems
Q: How to solve the failure of the pipe seal in low-temperature environment (below -30℃)?
A: Ordinary silicone will harden and lose elasticity below -40℃. It is necessary to replace the ultra-low-temperature silicone seal (the temperature resistance can reach -60℃), or wrap the insulation layer on the outside of the seal to avoid direct exposure to the low-temperature environment.
Q: How to deal with mould spots on the sealing ring of food processing pipes?
A: Immediately replace the food-grade antibacterial silicone seal that meets the FDA certification; in daily life, you need to regularly clean the seal with warm water + neutral detergent, and keep the pipe interface dry after use to avoid mould growth in a humid environment.
VI. Other frequently asked questions
Q: What is the reason for the "bulge" phenomenon in the sealing ring?
A: The main reason is that the pressure in the pipeline is too high (exceeding the pressure limit of the sealing ring), or the sealing ring material has pores and impurities, and the bulge partially expands after being pressurised; it is necessary to replace the sealing ring with a higher pressure-resistant level and ensure that the pipe pressure is within the rated range.
Q: Can different brands of sealing rings be mixed?
A: Not recommended. There may be differences in the size tolerance, hardness and material formula of the sealing ring of different manufacturers, and mixing is easy to cause the seal to mismatch. When replacing, it is recommended to choose genuine products with the same specifications and materials, or provide original sealing ring samples to the manufacturer to match and customise.
