The price of PTFE packing varies from 2-50 yuan per meter according to its specifications, and there are many factors that affect the pricing of PTFE packing. The following are the main aspects:
There are four main aspects that affect the quality of tetrafluoroethylene filler:
1. Size range:
Another factor affecting the effect of PTFE filler is the choice of its size. However, the Fluid Seal Association adopts the default attitude towards the deviation from the original size in two dimensions. We emphasize that the size cannot be larger than the standard size. GT5 1 10 PTFE packing can work under the condition of less than or equal to the standard size. Using this method, woven PTFE packing can be installed correctly under some special conditions. It can minimize downtime and the possibility of installation failure. Wheel pressure weaving and forming sealing rings are two effective methods that manufacturers can follow the size instructions.
2. Integrity of weaving:
Although some tetrafluoroethylene fillers are woven and armored. According to the appraisal of graphite composite gasket by fluid sealing association, the woven PTFE filler has the following characteristics: "The fibers are tightly wound as a whole, which is not easy to untie and separate during maintenance. It won't come apart without an envelope. The density of tetrafluoroethylene filler woven through the heart is more uniform, which has the potential ability to maintain lubrication. However, as a kind of through-the-heart knitting, all knitting is carried out around a straight fiber. Some weavers reduce the use of central straight strands and weave only around the outer layer or four corners of tetrafluoroethylene filler.
Others put too many strands in the inner layer or center of PTFE filler. Although different methods will produce different knitting effects, the most important performance standard is the density of knitting. Of course, if the design of weaving is neglected, PTFE filler will cause the strands to break under tensile stress and lose the bonding effect of weaving.
3. Integrity of the performance portfolio:
After comprehensively considering the performance standard of PTFE filler, GT5 1 10 fiber was carefully designed. In a pure environment, all test indicators are optimal. End users should pay attention not to add extra lubricant when overhauling PTFE packing, which will make the original excellent performance of PTFE packing unable to give full play. Because this will increase the weight of PTFE filler and reduce its plasticity, it will also make PTFE filler lose its impact resistance and the maintenance cost will increase accordingly.
4. Weaving density:
The key factor affecting the performance of fiber woven PTFE filler is its weaving density. However, weaving itself is very artistic, and the weaving density is often difficult to be expressed by numerical values. Experience tells us that tightly woven PTFE packing is not only wear-resistant and extrusion-resistant, but also will not deform when the temperature rises, thus reducing the adjustment of PTFE packing and effectively controlling leakage. On the other hand, the loose weaving of PTFE filler will lead to an increase in the length of PTFE filler per pound.
This does not mean that users who use these loose PTFE fillers will benefit from it. On the contrary, filling the stuffing box in the actual filling process will consume more of this loose filler, so it is impossible for aramid filler to have this theoretical saving. In fact, the maintenance cost will also increase with the replacement of PTFE packing and the increase of downtime. An effective way to increase the density of PTFE packing is to compress and shape the tightly woven PTFE packing by the manufacturer. This will make the PTFE packing more compact, symmetrical and flat, and the four corners are at right angles.