This sealing ring is black with a yellow spot and made from nitrile rubber and is the sealing ring to be used where there are petrol or oil residues on the waste water (e.g. in connection with oil and petrol separators at service stations, garages etc.).
The polar circumference (logitudinal circumference) of the Earth is about 40,008 kilometers (24,860 miles). The equatorial circumference of the Earth is about 40,075 kilometerâ¦s (24,901 miles). More Precisely: Earth is not a perfect sphere, but is an oblate spheroid, .336% flattened along the North-South axis.
The true circumference of the Earth is about 40,000 km (22,000 nautical miles; 25,000 miles), a figure first established approximately by Eratosthenes in the 2nd century BC, and the distance from the Canary Islands to Japan 19,600 km (10,600 nautical miles; 12,200 miles).