Leak-Proof Aluminum Caulking Tube for Construction Sealant, Silicone Glue & Industrial Adhesive Packaging. Superior Barrier Performance: Aluminum material offers higher strength and chemical resistance compared to plastic. Custom Offset Printing: Supports offset and silk screen printing with up to 6 colors or custom labels. ISO Certified Quality: Manufactured with ISO certification ensuring high standards and reliability. Recyclable Material: Made from aluminum with purity greater than 99.7%, fully recyclable. Free Samples Available: Complimentary samples provided for quality evaluation before bulk orders. Standard Compatibility: Dimensions 46.9*215 mm fit most standard caulking guns worldwide. Fast Lead Time: Production completed within 20-35 days after order and artwork confirmation. Versatile Usage: Ideal for silicone sealant, PU sealant, MS polymer, and construction adhesives.