Spiral Wound gaskets can be fabricated of any metal which is available in thin strip and which can be welded; therefore they can be used against virtually any corrosive medium dependent upon the choice of the metal and filler.
Theoretically, it is no longer contagious when there is no more fluid leaking from the sore, and no new blisters are forming. However, I always assume that a cold sore is contagious until it is completely healed, and to the best of my knowledge I've never transmitted the virus to anyone else. Abreva is a very good remedy. If applied when you first feel the tingle you can actually prevent the cold sore from erupting into blisters.
1 Someone with the flu is contagious for a day or so before symptoms start, then remains contagious for 5 to 7 days once they appear. 2  The CDC considers someone to be contagious until the fever is back to normal, without the help of medication, for 24 to 48 hours.hen you have a contagious illness, like the flu or a cold, the sore throat is often accompanied by a runny nose. 1  The sore throat is sometimes caused by postnasal drip, as fluids from your sinuses drip down the back of your throat, causing redness and irritation. 2  The throat feels raw, irritated, and painful.