NOVELTY - A sealing composition comprises a rubber component, and a polyolefin obtained by polymerizing 2-3C alkene. The storage shear modulus at 25 degrees C obtained from shear mode dynamic viscoelasticity measurements at a frequency of 1 Hz is 1x 105 Pa or more, and the loss shear modulus at 150 degrees C obtained from dynamic viscoelasticity measurements is 1x 104-9x 104 Pa.    USE - Sealing composition is used for sealing of edge portion of multi-layer glass and solar cell panel (all claimed).    ADVANTAGE - The sealing composition has excellent handleability, and shape reliability, and enables simple and effective formation of multi-layer glass and solar cell panel having excellent reliability, and prevents protrusion by heating, contamination to peripheral portion and fall of performance of multi-layer glass and solar cell panel.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) multi-layer glass (3), which comprises glass layer of 2 sheets mutually positioned at intervals at the thickness direction, intermediate layer (6) which is provided between the glass layers of 2 sheets, and positioned inside the edge portion of the glass layer, the sealing material which fills between the edge portions of the glass layer of 2 sheets so that the intermediate layer is sealed, and comprises sealing composition; and    (2) solar cell panel, which comprises glass layer, and support layer positioned at intervals at the thickness direction, solar cell element which is provided between the glass layer and the support layer, and positioned inside the edge portion of the glass layer and the support layer, and the sealing resin layer (9) which seals it, the sealing material which consists of sealing composition with which it fills between the edge portions of the glass layer and the support layer so that the sealing resin layer is sealed.    DESCRIPTION OF DRAWING(S) - The drawings show a schematic view of multi-layer glass. (Drawing includes non-English language text)    Multi-layer glass (3)    Intermediate layer (6)    Sealing resin layer (9)    Upper side glass layer (10)    Lower side glass layer (11)