This form of circlip often used in assemblies subjected to strong centrifugal forces, is also secure against high rotational speeds. Lugs with holes are provided for rapid fitting or removal with circlip pliers.his form of circlip often used in assemblies subjected to strong centrifugal forces, is also secure against high rotational speeds. Lugs with holes are provided for rapid fitting or removal with circlip pliers.
Frequently Asked Questions about Black Fly Dangers. Q: Can Black Flies carry diseases? A: Yes, they have been known to transmit diseases to humans and animals. In Africa, Central America and South America, Black Flies can transmit two diseases to humans: onchocerciasis, known as âriver blindness,â and mansonellosis.
O. volvulus infections are transmitted by small black-flies (sometimes called buffalo gnats) of the genus Simulium. The flies are pool-feeders with coarse mouthparts that rasp and tear host tissues. They feed on a variety of mammals and birds, and their painful bites cause considerable annoyance.