Is a gasket considered a compressive element?

Not inside the body of the pressure vessel. It is a compressed component.

Gaskets are merely sealing elements, not load-bearing elements

I still don’t understand it. Please give me some guidance!

By definition, no. Gaskets are not fasteners. As for whether it falls under the category of pressure vessels, how should that be expressed? It is not a pressure vessel, but pressure vessels use it.

Whether they are pressure-bearing components or not, they can still be used in pressure-bearing equipment. The selection of gaskets also needs to comply with relevant standards; one can refer to HG/T 20606-2009 Non-metallic flat gaskets for steel pipe flanges (PN series)

This post was last edited by Pinocchio on 2017-1-12 at 14:59. GBT 26929-2011 \"Terms for Pressure Vessels\": 2.2.9 Pressure part – A component of a vessel that is subjected to pressure loads (including internal or external pressure). Note: Refers to the container shell components and other sealing elements that store or contain pressurized media, as well as opening reinforcement rings and external pressure reinforcement rings. According to the definition of a \"compressed element\", a gasket is a compressed element. Whether the gasket is a compressive element should have no impact on the material selection for the gasket. Gaskets are standard components; when there are no special requirements in the design, purchasing and inspection of gaskets need only meet the relevant standards for such gaskets. The scope of pressure vessels as defined by regulatory standards includes the vessel body, safety accessories, and instruments, while gaskets should be considered as \"special connection components\" within the vessel body.

It is determined whether a device is a pressure vessel by referring to pressure, volume, and the medium used; gaskets can only be considered accessories of pressure vessels, belonging to the category of sealing elements