We have just taken delivery of some fork dust & oil seals from SKF for Paioli, Marzocchi, and Showa forks.
SKF are claiming over a 20% reduction in friction compared to standard seals, read more about them on the product page.
Paioli 38mm Fork Seal Kit - Sherco, Beta, Scorpa
Showa 39mm Fork Seal Kit - Montesa 2000 on
Marzocchi 40mm Fork Seal Kit - GasGas Pros, Sherco SSDT, Ossas
Tech 39mm Fork Seal Kit - Sherco 2012 on, Montesa 4RT 2014 on (Not Repsol), JotaGas
Each kit comes with an oil and dust seal to do 1 leg, so you will need 2 kits to service a complete set of forks.