PTFE Envelope Gasket
Envelope Gasket is a mechanical seal between two objects, typically used to prevent leakage from pressure, corrosion, and the natural thermal expansion and contraction of piping between the two objects. Since machined surfaces cannot be perfect, irregularities can be filled with gaskets. Gaskets are usually made of sheet materials such as paper, rubber, silicone rubber, metal, cork, felt, neoprene, nitrile rubber, fiberglass or plastic polymers (e.g. PTFE).
Overview
Production:
1. Raw material preparation; Ingredients: Pure F4 products, raw F4 fine resin, pounded, sieved
2. Clean with alcohol, no rust or adhesion in the mold.
3. According to the formula G = PV (where G is the amount of material added, P is the density of the pre-product (2.18g/cm3))
4.Distribute F4 resin evenly on the whole pressing surface.
5. Calculate the press gauge pressure according to the formula and set the press gauge pressure. Perform pressing
6. Remove the semi-finished product from the mold and trim the surface so that the surface is flat and the edges are neat. Prepare for molding.
7. Put the semi-finished product slowly into the sintering furnace, put in the right amount, heat up for one hour about to 390 degrees, and then carry on the heat preservation for one hour, about molding and then start to cool down, after about four hours, arrive at the room temperature, carry on the finished product out of the furnace, and finally complete the finalization.
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