Linseal is spread over the inside of a tyre tread area as the wheel revolves, ready to seal puncture after puncture. When the puncture occurs, the escaping air pressure forces Linseal into the hole immediately forming a strong airtight seal.inseal is the revolutionary liquid puncture preventative. Linseal is designed to remain fluid inside a pneumatic tyre or innertube. Linseal will seal a hole in the tread area of a tyre instantaneously when applied BEFORE a puncture occurs.
Short Definition: Trypophobia is the fear of groups of holes. It can also involve fears of various patterns.
Source: Reddit (emphasis mine) Trypophobia is not a real phobia. Look at the official list of phobias, and this is not even on there. This is a word 4chan made up back in the day that ended up spreading to various parts of the web. It is however a very real and natural reaction.