200Pcs Foam Pressure Sensitive Seal Liners for Jars & Bottles

Keep Your Products Fresh, Leak-Free & Tamper-Evident

These 200-piece self-adhesive foam seal cap liners are the easy, professional-grade solution for sealing cosmetic jars, supplement bottles, food containers, and more. Made from soft, non-toxic, odorless foam with a pressure-sensitive adhesive backing, they bond securely to the rim of virtually any bottle or jar — no heat or special equipment needed.

Whether you're a small-batch maker, a DIY crafter, or a business looking to protect product integrity, these tamper-evident liners deliver a clean, airtight seal in minutes.

Key Benefits

Preserves Freshness: Creates an airtight barrier that helps maintain the quality and longevity of your products.
Prevents Leaks: Blocks oils, fluids, and other liquids from seeping through the cap.
Tamper-Evident: Helps customers verify that a product has not been opened or tampered with before purchase.
Contamination Guard: Adds an extra layer of protection against environmental contaminants.
Versatile Sizing: Available in 12 sizes (20mm, 23mm, 25mm, 28mm, 32mm, 38mm, 40mm, 51mm, 55mm, 63mm, 70mm, 82mm) to fit a wide range of containers.
Non-Toxic & Odorless: Safe for cosmetics, food-grade storage, health products, and more.

Product Specifications

Material: Soft foam with pressure-sensitive adhesive
Quantity: 200 pieces per set
Available Sizes: 20mm, 23mm, 25mm, 28mm, 32mm, 38mm, 40mm, 51mm, 55mm, 63mm, 70mm, 82mm
Compatible Containers: Bottles, jars, pots — cosmetic, food, supplement, and chemical
Country of Origin: Made in China

How to Apply

Ensure the rim of your bottle or jar is dry, clean, and smooth.
Place the liner on the opening of the bottle/jar with the printed side facing up.
Screw the cap tightly onto the bottle.
Leave in place for at least 30 minutes to allow the adhesive to fully bond to the rim.
Remove the outer cap — the liner will now be securely sealed to the rim of the container.

Wide Range of Applications

These foam seal liners are ideal for sealing a broad variety of containers used in:

Cosmetics & beauty products (creams, lotions, serums)
Nutritional supplements & health products
Food & beverage containers
Essential oils & aromatherapy products
Chemical & household product bottles

For more information on safe packaging practices for consumer products, visit the U.S. Consumer Product Safety Commission (CPSC).

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Notes

Please allow 5–10mm differences due to manual measurement.
Actual color may vary slightly from images due to monitor settings and lighting conditions.

Learn more: Alternative wine closure

Frequently Asked Questions

Q: What sizes are included in the 200-piece foam seal liner set?

A: The set includes liners in 12 different sizes: 20mm, 23mm, 25mm, 28mm, 32mm, 38mm, 40mm, 51mm, 55mm, 63mm, 70mm, and 82mm — covering the most common bottle and jar rim diameters used in cosmetic, food, and supplement packaging.

Q: Are these foam seal liners safe for cosmetic and food containers?

A: Yes. The liners are made from soft, non-toxic, odorless foam material that is safe for use with cosmetics, food-grade storage containers, nutritional supplements, and similar applications.

Q: How long does it take for the adhesive to bond to the container rim?

A: After placing the liner and tightening the cap, allow at least 30 minutes for the pressure-sensitive adhesive to fully release from the backing and adhere securely to the rim of your bottle or jar.

Q: Can these liners be used on containers that already have content inside?

A: Yes — simply ensure the rim is clean, dry, and free of residue before applying the liner. This ensures the best possible adhesion and seal integrity.

Q: Do these foam liners work as tamper-evident seals?

A: Absolutely. Once applied, the liner bonds to the container rim and is visible when the cap is removed, helping end users verify that the product has not been opened prior to purchase.