100-Pack 28mm Black PP Bottle Caps for Essential Oil Bottles

Keep your essential oils, perfumes, and aromatherapy blends perfectly sealed with these 100-Pack Black 28mm PP Bottle Caps. Designed with a precision screw thread and inner ring, each cap delivers a tight, leak-proof closure that protects your valuable oils from spills and evaporation. Whether you're stocking a home spa, setting up a salon, or organizing your aromatherapy collection, these caps are a must-have accessory.

These caps are intended for use as bottle closures and storage accessories only. They are not a cosmetic or personal care product themselves.

Key Features

• Secure Screw-Thread Seal: The 28mm threaded design creates a tight, leak-resistant fit on standard aromatherapy and essential oil glass roller bottles.
• Anti-Slip Grip Stripes: Textured ridges around the exterior make it effortless to open and close each cap, even with oily hands.
• Durable PP Material: Constructed from food-grade polypropylene (PP), these caps are resistant to chemical exposure and safe for long-term essential oil storage.
• Inner Ring Design: A built-in inner seal ring ensures a double layer of protection against leaks and spills.
• Compact & Portable: Measuring just 3.0 × 3.0 × 1.9 cm (approx. 1.18 × 1.18 × 0.75 in), the caps are lightweight and travel-friendly.
• Bulk Value Pack: Comes in a convenient 100-piece set — ideal for DIY blenders, professional aromatherapists, salon owners, and hobbyists.

Specifications

• Color: Black
• Material: PP (Polypropylene)
• Thread Size: 28mm
• Dimensions: 3.00 × 3.00 × 1.90 cm / 1.18 × 1.18 × 0.75 in
• Quantity: 100 pieces per pack
• Compatible With: Essential oil glass roller bottles, aromatherapy perfume bottles, portable oil bottles, salon bottles

Ideal For

• Home, office & spa aromatherapy setups
• DIY essential oil blending & bottling
• Roller bottle refills & replacements
• Perfume & fragrance storage
• Travel-size oil bottle organization

Made in Mainland China.

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Learn more: NIH on aromatherapy and essential oils

Frequently Asked Questions

Q: What bottle sizes are compatible with these 28mm black PP caps?

A: These caps are designed to fit standard 28mm threaded bottle necks, which are commonly found on essential oil glass roller bottles, aromatherapy perfume bottles, portable oil bottles, and similar salon or spa bottles. Always verify your bottle's thread diameter before purchasing.

Q: Are these caps safe to use with pure essential oils and perfume blends?

A: Yes. The caps are made from PP (polypropylene), a material that is resistant to the chemical properties of essential oils and fragrance blends, making them suitable for long-term storage without degrading or contaminating the contents.

Q: Are these caps reusable?

A: Absolutely. The durable PP construction means these caps can be removed and reapplied multiple times without losing their sealing integrity, making them great for refillable roller bottles and DIY aromatherapy projects.