SKF Low-Friction Dust Wiper Seal Kit: Fox 40mm Fits 2016-Current Forks. SKFs seal kits are constructed of a low friction material that reduces the breakaway force in your shock and allows it to be more reactive.
The seal kits consist of two oil seal-dirt scrapers crush washers and pre-impregnated foam rings
The same self-lubricating compound as on SKFs motorcycle fork seals
Compound is compatible with a wide range of fork oils and is engineered to withstand cracking from UV light
Compared to OEM seals SKF seals provide reduced friction longer life and reduced air suction into the forks lower leg assembly