Haltec L-Ring Seal (LR25) 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. Specifications: One ring per order Haltec LR-25 L-Ring - 25" Haltec LR-29 L-Ring - 29" Haltec LR-33 L-Ring - 33" Haltec LR-35 L-Ring - 35" Haltec LR-39 L-Ring - 39" Haltec LR-45 L-Ring - 45" Compliance and Restrictions ⚠️WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov