Orkot is marketed by Orkot, which has a manufacturing plant in the US and in the UK (Orkot Marine). Orkot is a superior material for marine bearing applications. San Diego Plastics is merely a distributor of the material, one of many. For the most comprehensive and up to date information visit...
The Wills Rings link should be:
Wills Rings C
Wills Rings O
And for Spring Energized PTFE seals Variseal (part of Busak+Shamban) is a world leader:
Variseal
Actually the website Busak+Shamban is not just Forsheda products but all of Busak+Shamban, Forsheda (except pipe seals), Dowty Auto, Shamban Aerospace, Palmer Chenard, Variseal, Silcofab, Wills Rings, Stefa, V-Rings, etc.
THe link posted above is a good link and starting point for information in...