Pressure resistance of PTFE packing
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What is the pressure resistance of the oil-free PTFE gasket (white)? I heard before that it shouldn’t exceed 4 MPa, but some manufacturers claim that their products can reach 10 MPa. Such high pressure would cause cold flow, right?
No, we specialize in providing sealing products such as PTFE
Reply to 2# zjdzfjc: Could you provide information on this topic in more detail?
Reply to 1# Jiangtai Person: It’s definitely more than 4MBAR. . . Could you explain what a cold flow is? ? Haven’t heard of it. . .
Domestic ones will not exceed 4MPa, while imported ones can reach 10MPa.
The main factors affecting the pressure resistance of tetrafluoro gaskets are: operating temperature； When tetrafluoro gaskets are used as seals, the gap between the seal housing and the gland is also important ； Generally, PTFE is not suitable for dynamic sealing ； With proper consideration of the above issues, a pressure resistance of up to 10 MPa can generally be achieved; however, it should be a set of tetrafluorocyclic rings, not just one
Reply 4# VDF refers to the plastic deformation of a solid under compression. Cold flow in the packing will seal off leaks.