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;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;SKF's seal kits are constructed of a low friction material that reduces the breakaway force in your shock and allows it to be more reactive.