Features and Benefits:The primary purpose of the L-ring seal is to create an air seal where the tire bead and rim bead seat are not completely compatible. Some of the examples where the L-seal will prove useful: Where you have an irregular butt weld in the knurled bead seat area; Where, during initial inflation, the bead seating is very difficult; When an air passage between the bead and the rim is identified; Where overloads and severe operating conditions cause the rim deformation (deflection) which can result in air leakage. IMPORTANT INFORMATION: L-Ring Seals are not a cure for damaged beads nor damaged wheels and rims. Caution should be used during all fitments. Do not install where broken bead is suspected; Always follow the respective manufacturers� recommendation for proper bead-lubrication and initial air pressure to properly seat beads; If you have any questions regarding the use of the L-Ring Seals, contact Haltec prior to attempting any installation.