Silicone Glass Vial Protective Caps – Leak-Proof, Set of 3

Glass Vial Protective Silicone Caps – Leak-Proof & Dustproof, Set of 3

Keep your glass vials securely sealed and contaminant-free with these premium silicone protective vial caps. Designed to fit standard 3–5 ml flip-off glass vials, these durable caps deliver a tight, dependable seal that prevents leaks and blocks dust — so your stored liquids stay exactly as you left them, every time.

Available in 6 vibrant color options, these caps are as practical as they are easy to identify at a glance. Whether you're organizing a home storage setup, a lab bench, or a travel kit, these caps slot seamlessly into your routine.

Key Features

• Strong Leak-Proof Seal: The precision-engineered silicone sealing design forms a secure barrier around flip-off vial caps, preventing any liquid from escaping and keeping contents safely contained.
• Dustproof Protection: A snug, full-coverage fit keeps dust, debris, and contaminants away from vial stoppers, maintaining the integrity of stored liquids over extended periods.
• Extended Storage Efficiency: Long-term use of these protective caps helps preserve the quality of stored liquids, reduces waste, and maximizes the value of every vial.
• Premium Silicone Construction: Made from soft, flexible, food-grade silicone that is gentle on vial surfaces yet tough enough for repeated daily use.
• Universal Fit: Compatible with standard 3–5 ml glass flip-off vials; fits flip-off caps in common sizes (12 mm, 16 mm, 18 mm).
• 6 Color Options: Choose your preferred color for easy color-coding and organization of multiple vials.
• Ready to Use: No tools or assembly required — simply press onto your vial cap for an instant, secure fit.

Product Specifications

• Material: Silicone
• Compatible Vial Size: 3–5 ml glass vials with flip-off caps
• Cap Sizes: 12 mm, 16 mm, 18 mm
• Quantity: Set of 3
• Available Colors: 6 options

Perfect For

• Home liquid storage and organization
• Laboratory and research environments
• Travel-ready vial protection
• Color-coded multi-vial management

For general guidance on safe storage of liquids and laboratory best practices, visit the OSHA Laboratory Safety resource.

Frequently Asked Questions

Q: What type of glass vials are these silicone protective caps compatible with?

A: These silicone protective vial caps are designed for standard 3–5 ml glass vials fitted with flip-off caps in sizes 12 mm, 16 mm, and 18 mm. The flexible silicone material stretches to fit snugly over flip-off caps, creating a reliable leak-proof and dustproof seal.

Q: How many caps are included in a set, and what colors are available?

A: Each set includes 3 silicone protective vial caps. They are available in 6 color options, making it easy to color-code and organize multiple vials for quick identification.

Q: Are these vial caps reusable and easy to clean?

A: Yes! These caps are made from durable, high-quality silicone that is built to withstand repeated daily use. The smooth silicone surface is easy to wipe clean and maintains its shape and sealing performance over time, helping to extend the lifespan of your stored liquids and reduce waste.

Q: How do I apply the silicone protective cap to my glass vial?

A: Simply press the silicone cap firmly down over the flip-off cap on your glass vial. No tools or special equipment are needed — the cap's flexible silicone design creates an instant, secure fit right out of the pack.