Is a mechanical seal a standard component?
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The last edit to this post was made by wawa*n*ntaozi on 2017-7-6 at 10:12. I’m referring to the mechanical seal itself, not its serial number, nor its auxiliary systems; I’m just asking whether the moving and stationary parts of the mechanical seal are standard components ? After reading everyone’s responses, some said yes while others said no. I also searched for some standards online; taking the dimensions specified in JBT1472-2011 for mechanical seals used in pumps as an example, let’s discuss again whether these can be considered standard parts. These are the dimensions of the Type 103 mechanical seal; other types of mechanical seals specified in this standard also have these same dimensions. Those who understand design, please share their thoughts: is it possible to design a mechanical seal based on these dimensions? If so, it means that the mechanical seal would be a standard component ； If that doesn’t work, it means that part of the mechanical seal needs to be designed in a non-standard manner based on the actual operating conditions; in such cases, the entire mechanical seal is no longer considered a standard component. This is the standard for mechanical seals used in pumps as specified in JBT1472; JBT1472 outlines 7 basic types of mechanical seals for pumps. It has only a single end face, no double end face. I wanted to upload an attachment, but the company’s computers are encrypted, so it’s not possible. Everyone can search for it online. Chemical Equipment and Machinery
This is not necessarily the case; only those components that meet national and industry standards can be considered standard parts. For example, those that meet national standards, foreign BGMs, MTNs, and domestic DBMs are the standard items.
They vary from manufacturer to manufacturer. . . .
Both the moving and stationary parts of a mechanical seal are standard components.
No, if they were standard components, then there would be no need for any measurement or calibration. Moreover, the shaft sleeves produced by pump manufacturers are not standard components either; therefore, the concept of static and dynamic standards doesn’t apply in this case!
I think it should be called mature technology, but it’s not a standard component. Medium, pressure, temperature, speed, lubrication, and cooling all have an impact on mechanical seals. With the same conditions, different manufacturers may choose differently.
It shouldn’t be; the API standard is merely a standard for sealing types. As for the components, take the shaft diameter of the pump as an example – it’s not a standard part; similarly, the sealing shaft sleeves are also not standard parts.