Replacement seat belts
FWIW..fraying can be abated a bit with a hot steel carefully applied to the frayed edge..Grease grime etc can also be soaked-cleaned to make the original look much better.Best done by removing the belt from the fastening spot behind the trim back of the door frame-pillar..A few trim screws and properly sized Torx bit are needed..
A bucket of simple green with belt immersed after pulling it out far as you can will do a decent job with use of a small scrub brush and thorough DRY-OUT before retracting.A frayed seat belt isn't a safety problem so long as the belt isn't cut..Much depends on the level of restoration to pristine you are seeking..Jim
Seatbelt Solutions can re-web your belt(s), they have the knowledge and testing equipment to do a safe and proper replacement of the webbing. They also make some very nice replacement belt sets.
Personally, I wouldn't be to quick to just stop the fraying and clean the belt, once it's become damaged and frayed. The damage caused by catching it in the latch, very likely has affected the integrity of the webbing. I'd be very careful about the using cleaning fluids on any seat belt too, but especially on old ones. The strength of the belts and stitching, may be effected by the chemicals in some cleaning materials.
Maybe I'm a little over cautious, but after being around racing, most of my life, I'm a big seat belts.
A previously damaged belt, may not be much good when you need it most.










