Description Propper Self-Seal Sterility Maintenance Covers for protecting sterile packages during storage, handle and transportation. Propper Self-Seal Sterility Maintenance Covers protect packages from dust, moisture, tampering, or airborne contaminants to extend sterile shelf life. Propper Self-Seal Sterility Maintenance Covers feature an easy self-seal closure system. Made of low-density polyethylene for strength with welded seals to help prevent seal opening in use
