We offer a huge array of extruded elastometric seals which provides a permanent barrier to smoke and acoustics. Salient features of 1000 series of seals include: Attributes of Automatic Door Bottom Seals 8000 Series Varieties of face-fixed and mortised automatic door bottom seals are available with us. The automatic droop seals are activated by a spring–loaded mechanism to ensure easy door operations yet effective sealing when closed. Its features include: