I was just doing some light reading through the cams manual and came across this regarding seat belts:
1. Not valid after XXXX shown on each strap as detailed below: For International events, safety harnesses must not be used after 31 December of the year stated (XXXX).
For all other events, safety harnesses must not be used after 31 December, five years after the year stated (XXXX). Please note: The extension of the safety harness validity detailed above for nonInternational events is subject to the following conditions: safety harnesses must be inspected during the normal scrutiny process; each competitor must inspect and replace any damaged or worn safety harness before any competition as required.
2. Harness to be returned to original manufacturer for re-webbing within two years of the date of manufacture shown on SFI label. This requirement imposed by SFI Foundation (inc).
So if you are running a FIA 8853 - 1985 or FIA 8853/98 you get an extra 5 years on your belts!!
This is under General Requirements Schedule I
Wish i had of known this before i threw out some FIA belts a couple of months ago!!!