What is the purpose of exhaust springs on 3.1L V6 engine, chevy lumina 1995? on 1995 Chevrolet Lumina

There are two springs with studs holding the exhaust pipe to the rear exhaust manifold. The studs are inside the springs. What are the purpose of these springs? can I use any springs for replacement? thank you for your reply.

Asked by for the 1995 Chevrolet Lumina
Flex joint for engine movement from torque! So if you had say a broken motor mount it has somewhere to flex or move without breaking stuff!!