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.
Symptoms, diagnosis and treatment. Symptoms. Following the bite of the infected fly (both male and female can transmit infection), the parasite multiplies in the lymph and the blood of the person bitten, causing unspecific symptoms and signs such as headaches, fever, weakness, pain in the joints, lymphadenopathy, and stiffness.