NOVELTY - An edge seal comprises a sealant and a bonding agent, where the sealant contains a polymer modified with special reactive groups; olefinic polymers (10-90 wt.%); at least one filler (10-65 wt.%); at least one inorganic filler that is a thermal and oxidative stabilizer (2-30 wt.%); at least one of a desiccant and water scavenger (2.5-25 wt.%); and at least one aging resistor (0.1-3 wt.%) including an anti-oxidant or UV stabilizer.    USE - As an edge seal for manufacturing two-pane or multi-pane insulating glass or solar modules (claimed).    ADVANTAGE - The edge seal is stable to external influences of high temperature and thermal cycling; strongly inhibits the movement of moisture from the atmosphere to the water-sensitive interior areas of the solar modules, even after experiencing severe weather exposures including high humidities, high temperatures, and temperature cycling; exhibits good oxidative and heat stability, and low conductivity; and reliably prevents any deformation of movement of the thermoplastic spacer profile into the interpane space. The sealing compound is oxidatively stable after 4000 hours of exposure to temperatures greater than 110 degrees C.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for following:    (1) a solar module comprising a first substrate; a second substrate; at least one photovoltaic cell disposed between the first and second substrates; a sealant in contact with the first and second substrates to form a moisture vapor barrier to hinder moisture vapor from reaching at least one photovoltaic cell, where the sealant includes an olefinic polymer; and at least one of a silane modified terpolymers of alpha -olefins (APAO) and a silane modified polyisobutylene, at least one filler, at least one inorganic filler that is a thermal and oxidative stabilizer, at least one of a water scavenger and a desiccant, and at least one aging resistor, and where the sealant electrically insulates the photovoltaic cell; and    (2) a compound used in a solar module having a photovoltaic cell, comprising an olefinic polymer; at least one of a silane modified APAO and a silane modified polyisobutylene; at least one filler; at least one inorganic filler that is a thermal and oxidative stabilizer including a carbon black; at least one of a water scavenger and a desiccant; and at least one aging resistor, and where the compound electrically insulates the photovoltaic cell.