The Hold Tight cup-shaped stainless steel washer contains a rubber ring
so the tension rod pushes both the cup washer and the rubber ring.
Normally, vibrations will eventually loosen the tension rod. But the
softness of Hold Tight's rubber ring keeps it in contact with both the
tension rod and the hoop at all times and maintains friction between
them so that tension is always preserved.
20 Washers total. |