This European Standard covers the requirements for and testing of sealants for use in one or more of the following applications: a) Manufacturing of insulating glass units where ultra-violet resistance and/or mechanical resistance (structural use) of the insulating glass edge seal is required. b) Manufacturing of factory made structural sealant glazing elements when referred to by the relevant European Standards and/or European Technical Approval Guidelines. c) Assembling of glass products into or onto supports, where also ultra-violet resistance and/or mechanical resistance (structural use) of the seal is required, under controlled environmental conditions as described in Clause 5 of EN 13022-2:2006. NOTE 1 The required level of resistance to ultra-violet exposure will be dependent upon the degree of exposure to ultra-violet radiation. NOTE 2 Only silicone based sealants are permitted for the applications a, b and c above. d) Manufacturing of insulating glass units where the outer seal of the insulating glass has no structural function and exposure to ultra-violet radiation is reduced for example either by: i) Use of glass components that decrease the ultra-violet radiation transmission, e. g. laminated glass with ultra-violet absorbing interlayer(s), screen enamelled printing, etc., or ii) Use of durable applied opaque surface coverings, e. g. metal components, etc. NOTE 3 Dependent upon the amount of ultra-violet radiation exposure both organic and silicone based sealants are permitted. This European Standard covers the evaluation of conformity and the factory production control with respect to the production of sealants in conformity with this standard. This European Standard describes the role of sealants that are in conformity with this European Standard, with respect to sealing and bonding. This European Standard does not apply to sealants for the manufacture of insulating glass units where the seal is fully protected, i.e. by a frame, from ultra-violet radiation. NOTE 4 Sealants for this application should comply with EN 1279-4. This European Standard contains other aspects of importance for trade.