What's the best way to stick the gasket to the flange?
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This post was last published by Benben on 2010-4-20 09:10 When I replaced the gasket on the aviation fuel pipeline today, the gasket stuck to it and it was difficult to fix. Do you have any good ideas? The gasket is an asbestos-resistant gasket and the flange is a falcon groove surface.
Now Europe and America are waiting* * It is forbidden to use asbestos products because they cause cancer. It is recommended to use wound gaskets with metal rings instead. In terms of safety,
I agree with what you said above. Nowadays, metal spiral wound gaskets are used. Not only will the situation you mentioned not occur, but the sealing performance is also good. It is recommended to gently scrape it off with something to avoid damaging the sealing surface.
Remove with a relatively flat spatula.
When you add a gasket, first apply butter on the gasket. This increases the tightness and prevents the gasket from connecting to the flange.
Under the conditions where fire is allowed, you can burn it with gas and knock it off.
You can use a small hammer but do not use too much force to avoid damaging the joint surface. After loosening, use a flat blade and a scraper to clean it. Apply butter when installing, so that it will be easier to clean next time. If the butter cannot stick to the large-diameter pad, you can use sealant, but never use lead oil. It is recommended to use a winding pad or a PTFE pad.
We all use small blades to scrape, so asbestos pads are just uncomfortable to use, so we’d better not use them in the future.
First soak it in water or other chemical reagents, and then use a flat shovel to remove it. Try to be careful not to damage the sealing surface. . .
How many kilograms is the pressure in the pipeline? Generally can be reused ； If not, use a high-pressure water gun to clean it.
Asbestos pads are easy to adhere after being used for a long time, especially if sealant is applied during installation or in high temperature situations. The best way is to change the type of gasket.