OBEX CORTEX 0560FR Class B ISM (Interface Sealing Membrane) is a self-adhesive EPDM-alternative membrane which is used to create water and airtight seals around openings such as windows, doors and SFS sections on construction projects. It achieves class B-s3,d0 when tested according to EN 13501-1. The membrane can be supplied with many different adhesive options such as a single strip, strips on opposite sides, fully adhesive backed, etc. and the release liner can be split to suit the strip width. The widest roll width available is 500mm and the narrowest width of adhesive strip available is 10mm. Typical uses include; Weather & airtight seals around windows, doors and curtain walling systems Weather & airtight seals from SFS sections to the concrete frame Top of parapet walls Many other applications where a robust, self-adhesive Class B EPDM-alternative is required