Print | Products > Allied Products > SEM Allied Products SEM SEM builds best in class products designed to reduce repair time, steps, and waste in every application. Since 1948 we have challenged ourselves to create original products that solve our users’ problems. From intelligent product design to technical support, the “built better” promise is engrained in our DNA. IK Seam Sealers 2-IN-1 1K Seam Sealers 2K Seam Sealers 2K Seam Sealers: 2K Seam Sealers: Heavy Bodied Self Leveling Plastic Repair Automotive Refinish ENVIROBASE® DELTRON® ONECHOICE® 2K COBRA ® AUTOTHANE ® VIBRANCE COLLECTION® Commercial Transport DELFLEET ® AUTOTHANE® CV Allied Products DYNABRADE SEM STARTLINE ® SATA® MIRKA® MOONWALK