EM Rod Seal/Dust Structural Design Combination The geometry of the EL type has been tested and proven to meet the requirements of small pneumatics, such as the small size and low friction of the EM type. • Based on application geometry and compounds suitable for use with oil-containing or oil-free air (after initial lubrication of installation). • Dual function element: sealed and dustproof • Wear resistance • Miniaturized design, thus lower dynamic and static friction. • Smooth running due to adjusted functional lip. • Smooth running due to the geometry of the sealing lip that keeps it lubricated. • Short axial installation length • Short radial installation depth • Mounts in closed bottom cut housings. • Low compression set • The geometry of the seal and dust lip is adjusted to achieve an effective coefficient of friction and service time.