This O-ring is sold as a 10-pack, with each unit identical and priced for the full set. It fits Mack transmission applications and is sealing joints or fittings to prevent fluid or air leakage under pressure.Interchanges:Mack 25108468Mack 56AX552GGA-2931This unit is sold in packs of 10.FeaturesPack of 10 O-ringsPart of the Transmission product groupTech SpecsSell pack: 10 piecesUsed in these Mack modelsT2130 / T2180 TransmissionT313L / T318L Transmission