Just check the angle arm on them: empty and loaded. There are Airstreams from the 60's who still have the same TorFlex axles on them. The rubber is in a tube not exposed to UV-rays. There are Volkswagen Beatles still around from the 40's with the same axles.
That's all the use on utility and Travel Trailers in Europe. They don't use metal springs like North America. I always preferred Torflex Axles above springs. Springs have to much play in them and are noisy during travel.
Good luck with your 1992.
2014 Ram 1500 CrewCab 4x4 5.7 Hemi 3.92 Rear and Air Lift 1000
2005 Jayco Jay Feather LGT - 29Y GVWR-6500 lbs.
Pro Series 1200 lbs. WDH with Double Sway Bar.
Champion 3100/2800 watt Inverter/Generator-Onboard Solar Power
ALJO 'Forever Young @ Heart' provide on their travels Music Entertainment to Senior Care Homes