Oil Seal with Rubber Exterior 16x22x4 mm in NBR with one Seal-lip. Athena supplies the widest range of replacement gaskets available on the market, strong in over 40 years of experience in this sector. Athena’s products are based on a solid know-how, continuous technological development, achieved by its in-house team of engineers and designers, and production that keeps strictly to parameters required by OEMs.