Unique features of Ariete ARI fork oil seals in XNBR elastomer: The graphite-rich compound creates a self-lubricating material which is both heat and abrasion resistant. In using a low-stiction material the product guarantees an outstanding smooth action. The fine-ground seal lips with 100% inspection ensure an enhanced performance. The product includes a capsule of ARISIL, a non-petroleum-based grease to prolong seal life.