Laboratory Circle Sealing Sticker Self Adhesive Sealing Labels for Aluminum Plastics Caps, Leak-Proof (100pcs for 20mm Cap)

These rounded open stickers create a secure, effectively prevent leakage after needle punctures, safeguarding contents from air exposure, moisture, and contaminants

• Include 100pcs transparent circle leak-proof sticker for 20mm aluminum plastic cover
• Designed for laboratory glass vials and aluminum plastic caps to ensure still airtight closure after use the rubber stopper , preventing contamination and leakage
• Pre-cut edges and a smooth adhesive layer enable quick,removes cleanly without damaging vial surfaces or leaving sticky residues
• Self adhesive backing ensures quick, bubble-free application; peels off cleanly without residue
• Perfect for sealing vials, chemical reagents, and biological specimens in research or industrial settings