Differences in gasket usage

I’ve never heard of a Pots gasket, but I’m quite imaginative – could it be a wave-tooth gasket? :lol

I agree with you; what the original poster meant to refer to is probably the wave-shaped gasket; P

Excerpt from Baidu: For reference only. Spiral wound gaskets are the ones with the best resilience among semi-metallic gaskets. Their structural density can be adjusted to meet different tightening requirements, and inner and outer steel rings are used to control the maximum compression force. The surface precision requirements for the flange surfaces in contact with metal spiral wound gaskets are not high. Wound gaskets are particularly suitable for applications with uneven loads, where the bonding force tends to weaken, as well as in situations with periodic changes in temperature and pressure, along with impacts or vibrations. Wound gaskets are the ideal static sealing elements for flange connections in valves, pumps, heat exchangers, towers, manholes, handholes, and more. Toothed gaskets are a type of metal soft gasket that offer better sealing performance than metal flat gaskets. They are typically created by using precision lathes to forge concentric, 90-degree angled serrated grooves on both sides of a stainless steel flat metal sheet. Depending on the medium involved, materials such as flexible graphite, PTFE, asbestos-free sheets, or other soft metals can be used and applied to these grooves. By leveraging the sealing properties of the soft coating along with the strength and elasticity of the metal, these gaskets also provide a labyrinth seal effect; as a result, the same level of sealing can be achieved with less compressive force required. Toothed composite gaskets can also be used directly without a covering seal layer, achieving a good sealing effect; however, in high-pressure applications they may cause damage to the surface of the flange. Toothed composite gaskets are primarily used for sealing pressure vessels and pipeline flanges under medium to high pressures and high temperatures. ) Toothed composite gaskets are the preferred type of gasket for use with lower pre-tensioning forces; their soft sealing surface prevents direct metal-to-metal contact, enabling a reliable and tight fit that protects the metal flanges from damage, even under extremely high loads. Toothed composite gaskets are particularly suitable for high-temperature, high-pressure environments with variable operating conditions; they serve as an ideal alternative to traditional metal-lined gaskets at the flange connections of heat exchangers, containers, and reaction vessels. .