Official Answer
Answer
A nested wave spring in 17-7 PH or Inconel X-750. Nesting places the turns in parallel so their loads add within one installed height, and the alloy determines how much stress those turns can carry before they take a permanent set. Past that, the levers are all geometric: more waves per turn raises load steeply, thicker flat wire raises it further, and a wider radial wall spreads the stress so the material can be worked harder. The real ceiling is not the spring but the bore. Send the bore diameter, the radial wall you can spare and the available height, and we will calculate the maximum achievable load inside that envelope.
