Engineers often wrap iron rings, called tension rings, around domes. Like hoops on a barrel, the tension rings prevent the dome walls from thrusting outward.

Manual Manual tensioners may be adjusted for belt wear via manual methods such as unbolting and ... pulleys or sprockets mounted between the drive and driven pulleys. Tension Ring Tension rings mount ...

However, there were several aspects of Kate's behaviour that were “signs of what looks like inner tension ... Kate replaces her sapphire engagement ring with new ‘eternity band ...