diamond 138Diamond Aircraft Industries GmbH Nikolaus-August-Otto-Straße 5 2700 Wiener Neustadt, Austria DAI SI 42NG-138 Page 1 of 1 01-Feb-2025 SERVICE INFORMATION NO. SI 42NG-138 IVolume 138, October 2025, 110252. Diamond and Related Materials. Mechanically However, Teflon does not possess suitable mechanical properties and wear