What type of wrapping mat is this?
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As shown in the picture, what type of wrapping mat is this? What type of flange is used? Thank you, please give some advice from the experts and give me extra points.
With inner and outer rings D metal spiral gasket. Wound gaskets with inner and outer rings are used on flat and raised surface flanges. The inner ring is mainly for reinforcement, and the outer ring is mainly for positioning.
The one with the outer ring plays a positioning role. I don’t understand what it means. What is positioning? Can you explain it in a simpler way?
Positioning refers to the outer ring limit and the bolt ring during installation, ensuring that the gasket is centered and not eccentric.
It is "metal graphite wound gasket with inner ring and centering ring". code name: D, suitable for raised face (and RF) flanges. For detailed parameters and regulations, see: HGT 20610-2009
Type D, right? It’s not a regular flange. The requirements for the inner and outer rings are inconsistent. It should be used for certain machine connection parts, right?
Metal inner coiled gasket for flat flange sealing.