News

Graphite composite gasket, also known as reinforced graphite gasket or high-strength graphite gasket, is a kind of gasket made of sprinted metal tooth plate or metal mesh plate and expanded graphite particles. It is usually stamped or cut from reinforced graphite sheet by gasket cutting equipment. The commonly used inner layer reinforcement materials for reinforced graphite gaskets are S304, S316 or tinplate and other materials.

The octagonal metal ring gasket is installed in the trapezoidal ring groove on the flange surface. When the connecting bolt is tightened, it is axially tightened and the upper and lower trapezoidal grooves are tightened, resulting in plastic deformation, forming an annular sealing belt and establishing an initial seal. After boosting under the action of medium pressure, the ring gasket radially expands. The gasket and the inclined surface of the trapezoidal groove are more tightly attached, resulting in a self-tightening effect.

Spiral wound gasket is an important sealing element. Metal spiral wound gasket is widely used in petroleum, chemical, metallurgy, power generation, shipbuilding and other industries. It is the key component of static sealing of pressure pipes, valves, pumps, heat exchangers and other equipment. part. Therefore, the selection and use of high-quality spiral wound gasket products is of great significance to reduce and eliminate running, running, dripping and leaking, and to ensure the safety of the host equipment and the normal operation of the pressure pipeline.

The installation of the PTFE gasket varies with the type of mechanical seal and the machine, but the essentials of the installation are the same. The steps and precautions for the installation of the PTFE gasket are as follows: Before the PTFE gasket is installed, the shaft (shaft sleeve) ), the gland has no burrs, and the bearing is in good condition; the seals, shafts, sealing chambers, and glands should be cleaned.

When the graphite packing is tightened and the packing is loaded, each packing ring must be installed in place in sequence until the complete set of packing is completed. This ensures an even distribution of axial stress and reduces friction and leakage rates, reducing or even preventing the need to replace packing or re-tighten glands in the future, thereby extending the service life of the packing set.

Non-asbestos gaskets are roughly divided into non-asbestos rubber sheet gaskets and non-asbestos copy sheet gaskets according to their material, process performance and use. They are made of aramid and other organic fibers and plant fibers, nitrile rubber and minerals. Non-asbestos rubber sheets and non-asbestos gaskets manufactured by rolling or copying process.