High-temperature gasket
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This gasket is a high-temperature gasket. Could experts please advise on how to distinguish between high-temperature gaskets and ordinary gaskets?
The specifications of the gasket itself determine the operating temperature, I guess. For example, the material of the inner and outer rings, the material of the winding tape, the operating temperature of graphite, and so on.
The main differences between high-temperature gaskets and ordinary gaskets lie in the following three aspects: 1. Material: High-temperature gaskets are classified according to the medium, as well as temperature and pressure, using materials such as ceramics, mica, vermiculite, and graphite as fillers. Metallic parts: 304, 304L, 316, 316L, zinc alloys, nickel-based alloys, etc. 2. Gasket types: Sheet metal gaskets (less than 150 lb), semi-metallic gaskets (wound gaskets, toothed gaskets, etc.). 3. Metal gaskets such as ring gaskets, octagonal gaskets, Ω-shaped welding gaskets, etc. I hope this is helpful to you; feel free to discuss further. By the way, for operating conditions above 450°C (except for non-oxidizing conditions), it is not recommended to use the current type of seal.
Whether it can withstand high temperatures depends on the material; your gasket specifies that it is made of nickel-based alloy 800. Obviously, the temperature is very high
If it is at high temperatures, use RJ-type gasket rings or welded joints for construction
Not only is it heat-resistant, but corrosion at this gasket area is also severe; that’s why inner and outer rings made of Incoloy material are used
It mainly depends on the type and material of the gasket; the type of gasket determines the operating pressure, while the material determines the operating environment (high temperatures, corrosion, etc.)