Nubbin Device Paws In The City

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Estella Carroll V 24 Jun 2025

A nubbin is just a small tooth obtained by machining on the joint contact area of a flange As i am not very familiar with flanges, i am not sure if the. This is a very detailed issue and is normally specified by joint manufacturers for use with.

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The only gasket i would use a nubbin with is a flat metal I'm trying to compare the dimensions of a cl150 raised face weld neck flange to a cl150 flat face weld neck flange Otherwise i design without, and if anybody insists i can then add one without chnging bolting

Rzrbk is right, some designs.

Per appendix 2 of asme section viii div 1, machining a nubbin onto the flange gasket surface usually reduces the required bolting area so that fewer (or smaller. Can i use a 1/8 wide x 1/64 high nubbin on the sealing surface of the flange confined face to reduce the gasket seating stress and thus keep the flanges. Having said that, i have seen a type of arrangement (not often) which uses a nubbin against the outer ring of a spiral wound

For this arrangement the calculaton used the loadings. Two existing girth flanges are mated together One flange has a nubbin 1/64” high and 1/8” wide The gasket used between the flanges is djaf iron, that is 1/2” wide