Keep Your Glass Vials Sealed, Safe & Dust-Free

Whether you're storing essential oils, lab samples, craft glitter, spices, or travel liquids, these TPU Vial Caps deliver a reliable airtight seal every time. Designed to fit standard 3ml and 5ml glass vials, this handy 12-pack ensures you always have a spare on hand. Flexible, food-grade TPU material stretches snugly over the vial mouth for a secure, leak-proof, dust-resistant fit — no more spills or contamination.

Why You'll Love These Vial Caps

Leak-Proof & Airtight: Flexible TPU forms a tight seal to prevent spills and keep contents fresh.
Dust-Resistant: Keeps airborne particles, debris, and contaminants out of your vials.
Reusable & Durable: High-quality TPU material withstands repeated use without cracking or losing shape.
Food-Grade Material: Safe for use with food, cosmetics, and essential oils — no harmful chemicals.
Multicolor Pack: Easy color-coding for quick identification of vial contents.
Universal Fit: Available for 3ml and 5ml glass vials; inner diameter options to suit standard vial openings.
Compact & Travel-Ready: Lightweight and easy to pack for travel, lab, or craft use.

Specifications

Material: Food-Grade TPU (Thermoplastic Polyurethane)
Capacity Compatibility: 3ml & 5ml glass vials
5ml Cap Size: 3 × 1 cm (1.18 × 0.39 in) | Outer Ø: 2.5 cm | Inner Ø: 2.1 cm
3ml Cap Size: 2 × 0.9 cm (0.79 × 0.35 in) | Outer Ø: 1.7 cm | Inner Ø: 1.4 cm
Colors: Multicolor
Pack Quantity: 12 caps per pack
Country of Origin: Made in China

Package Includes

12 × Glass Vial Protective Caps (TPU)

Perfect For

Essential oil vial storage
Lab sample containment
Craft, glitter & resin projects
Travel liquid organization
Spice & seasoning mini bottles
Jewelry & bead storage vials

Related Products You May Like

For general guidance on safe food-contact and storage materials, visit the FDA's Food Contact Substances page.

Learn more: Bottle cap

Frequently Asked Questions

Q: What size glass vials do these caps fit?

A: These TPU vial caps are designed to fit standard 3ml and 5ml glass vials. The 5ml cap has an inner diameter of 2.1 cm (0.83 in), while the 3ml cap has an inner diameter of 1.4 cm (0.55 in). Always check your vial's opening diameter before ordering to ensure a snug fit.

Q: Are these vial caps safe for use with essential oils and food items?

A: Yes! These caps are made from food-grade TPU (Thermoplastic Polyurethane), which is free from high-concern chemicals and safe for contact with essential oils, cosmetics, and food-grade contents.

Q: Are the vial caps reusable?

A: Absolutely. The flexible TPU material is highly durable and designed for repeated use. Simply rinse clean and reapply — they won't crack or lose their sealing ability with regular use.

Q: How many caps come in a pack?

A: Each pack contains 12 vial caps in assorted colors, making it easy to color-code your vials for quick identification.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.