Donut-shaped elastic torus and its cross-section.
Schematic drawing and cross-sectional profile of the donut sample.
How to calculate the Surface Area and Volume of a Torus? - GeeksforGeeks
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The torus and the universe – Past, Present and Future
evolution - What would the problems with / consequences of a torus shaped planet be? - Worldbuilding Stack Exchange
Small symmetrical deformation of thin torus with circular cross-section - ScienceDirect
2.4mm (CS) x 5.3mm (ID) Buna-N (NBR) 70A Duro Metric O-Ring – Orange Seal
Geometry-induced rigidity in elastic torus from circular to oblique elliptic cross-section - ScienceDirect
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Torus - Wikipedia
Takahiro TOMIOKA, Professor (Full), Doctor of Engineering, Akita Prefectural University, Akitashi, Department of Mechanical Engineering
Torus - Wikipedia