Hebei Xinhong D1222 Metal Wrapped Gasket

Hebei Xinhong D1222 Metal Wrapped GasketIntroduction:Metal wrapped gasket is a widely used sealing gasket, which is a semi metal sealing gasket with elastic properties. It is made by alternately winding V-shaped or W-shaped thin steel strips with various fillers, and can withstand high temperature, high pressure, and adapt to use under ultra-low temperature or vacuum conditions. By changing the material combination of the gasket, the chemical corrosion problem of various media on the gasket can be solved. Its structural density can be made according to different locking force requirements. To strengthen the main body and accurately position, the wrapped gasket is equipped with a metal inner reinforcement ring and an outer positioning ring. The inner and outer steel rings are used to control its high pressure and contact with the gasketflangeThe surface accuracy requirement for the sealing surface is not high.

The difficulties in disassembling the wrapped gasket have been summarized by the Ship Sealing Technology Department, along with the disassembly sequence, for your reference.
1. The metal wrapped gasket should be evenly and symmetrically loosened by taking turns to loosen the flange bolts 1/4 to 1 turn, and then the bolts should be officially removed. 2. Metal wrapped gasket rust removal method: The threaded area should be soaked with kerosene or rust remover to remove rust and facilitate the disassembly of parts. 3. The metal wrapped gasket expansion method uses tools such as wedge iron to loosen the flange between the flanges, and the flange to be loosened is to be removed. 4. For rusted or bonded gaskets, remove the bolts first, then close the valve and use the valve stem to open the valve cover. 5. Use tools such as copper bars and hammers to tap the valve body with metal wrapped gaskets, allowing the parts and gaskets to loosen before disassembly. 6. The metal winding gasket method uses solvents, kerosene, and other gaskets to soften or peel off the sealing surface before disassembly. 7. The metal wrapped gasket punching ring is fixed with a four ring, with a small gap between the ring grooves and no wrench position, making it difficult to disassemble when the four ring is corroded. You can drill a disassembly hole for the groove outside the valve and use a flat head punch to remove the four ring valve. 8. The metal wrapped gasket scraping method uses a scraper blade to seal the surface and remove the gasket and its residue. This method is particularly suitable for rubber gaskets and rubber asbestos gaskets. The disassembly sequence of metal wrapped gaskets: remove the pre tension on the metal wrapped gasket, open the static sealing device, remove the metal wrapped gasket, and remove the metal wrapped gasket residue.

Hebei Xinhong D1222 Metal Wrapped GasketScope of application:Sealing of flange connections such as pipelines, valves, pressure vessels, condensers, heat exchangers, towers, manholes, and handholes in industries such as petroleum, chemical, metallurgical, power, shipbuilding, and machinery.

Applicable temperature: -196 ℃ -+870 ℃ (flexible graphite)≤+250 ℃ (PTFE)

≤+500 ℃ (special asbestos)

Medium: Suitable for high temperature and high pressure steam, oil, oil and gas, solvents, thermal coal oil, etc.

Hebei Xinhong D1222 Metal Wrapped GasketInstructions for use: Precautions1. The winding part of the gasket must be betweenFlange sealing surfaceBetween them, the width of the winding part cannot be widened arbitrarily, which will inevitably affect the clamping force of the bolt and thus affect the sealing performance of the gasket.

2. Basic gasketDo not use it inconcave-convex flangeUp, this is because the basic gasket isflangeUnder the action of axial compression force,shimThe inner circle welding points are prone to open welding, resulting in gasket failure.

3. Gaskets used for flat and convex flanges under harsh working conditions such as high temperature, cold or frequent alternation of cold and hot, large vibration, and strong corrosive mediaInstall a reasonable material inner ring.

4. Low material gaskets should never be used to replace high material gaskets. Avoid gasket failure caused by material corrosion or other reasons.