w108 rear spring hat size options

[BrownBenz]

High.

I removed the springs from 67 250s are part of refurb.

The rear spring hats, the rubber portion on top, measured about 27mm.

The new ones I see come in 30mm and 18mm. So I assuming the old ones were originally 30mm and compressed over the years. They looked very old.

Or, was there a hat available in this size?