Sale were in need of cover in the back row after Tom Curry suffered an ankle injury and they have acquired the versatile Jean-Luc du Preez from Super Rugby side the Sharks.
Sale's new signing has appeared in 13 internationals for the Springboks and has represented Sharks over 60 times.
"He is part of the formidable Sharks back row in South Africa and can play in all back three positions," said Sale's director of rugby Steve Diamond.
