Best Labware Caps of 2026

Name: 10pcs 3ml Glass Vial Protective Caps, 5 Colors Rubber Leakproof & Reusable Lids Caps Covers for Injection Peptide Vials for Essential Oil Storage & Lab Use
Brand: Sinbana

Tom Law

Last Updated: 2 Feb 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Labware caps are essential accessories for any laboratory to ensure the safety and integrity of experiments. These caps come in a variety of shapes and sizes to fit different types of labware such as test tubes, flasks, and bottles. The caps are made of high-quality materials that are resistant to chemicals and can withstand high temperatures. They create airtight seals to prevent contamination and evaporation of samples. Labware caps are a cost-effective solution to protect and stabilise samples during storage and transportation.

At a Glance: Our Top Picks

#TOP 1

10pcs 3ml Glass Vial Protective Caps, 5 Colors Rubber Leakproof & Reusable Lids Caps Covers for Injection Peptide Vials for Essential Oil Storage & Lab Use

9.8

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10pcs 3ml Glass Vial Protective Caps, 5 Colors Rubber Leakproof & Reusable Lids Caps Covers for Injection Peptide Vials for Essential Oil Storage & Lab Use

#TOP1

9.8

Read Review

#TOP 2

12pcs 5-100ml Glass Vial Protective Caps, 6 Colors Leakproof Dust-Proof Twist-Off Silicone Cap Covers for Injection Vials Liquid Storage & Laboratory Use

9.7

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12pcs 5-100ml Glass Vial Protective Caps, 6 Colors Leakproof Dust-Proof Twist-Off Silicone Cap Covers for Injection Vials Liquid Storage & Laboratory Use

#TOP2

9.7

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#TOP 3

PATIKIL 20mm Flip Off Caps, 200 Pcs

9.5

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PATIKIL 20mm Flip Off Caps, 200 Pcs

#TOP3

9.5

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Top 10 Labware Caps

#TOP 1

10pcs 3ml Glass Vial Protective Caps, 5 Colors Rubber Leakproof & Reusable Lids Caps Covers for Injection Peptide Vials for Essential Oil Storage & Lab Use

Sinbana

Z121340

10pcs 3ml Glass Vial Protective Caps, 5 Colors Rubber Leakproof & Reusable Lids Caps Covers for Injection Peptide Vials for Essential Oil Storage & Lab Use

9.8

FTB Score

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Features

Premium Material: Made Of Good-Quality, Flexible, And Durable Rubber, The 3ml Vial Protective Caps Are Reliable And Durable. Not Easy To Break Or Fade, Easy To Clean, Reusable For A Variety Of Uses.

Package List: You Will Receive 10 Pieces Of The Vial Protective Caps, 2 Pieces Of Each In 5 Colors. Sufficient Quantity To Meet Your Use Needs. Perfect For DIY Craft Enthusiasts, Lab Professionals, And Home Users.

Smart Design: The Vibrant Colors Make The Rubber Vial Caps Easy To Organize And Quickly Identify, Improving Workflow Efficiency And Providing You With Great Convenience In Both Professional And Personal Settings.

Perfect Fit: Designed For Standard 3ml Glass Bottles And Essential Oil Bottles, These Protective Caps Provide A Secure Seal Even For Opened But Partially Used Glass Bottles, Preserving The Freshness Of The Contents.

Leak & Dust-Proof: The Snug-Fitting Design Effectively Prevents Leaks, Evaporation, And Dust Ingress, Keeping Essential Oils, Fragrances, And Liquid Samples Pure And Contaminant-Free.

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#TOP 2

12pcs 5-100ml Glass Vial Protective Caps, 6 Colors Leakproof Dust-Proof Twist-Off Silicone Cap Covers for Injection Vials Liquid Storage & Laboratory Use

Goktvai

N02370

multi-color

5-100ml

12pcs 5-100ml Glass Vial Protective Caps, 6 Colors Leakproof Dust-Proof Twist-Off Silicone Cap Covers for Injection Vials Liquid Storage & Laboratory Use

9.7

FTB Score

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Features

Premium Silicone Construction: Our Peptide Vial Caps Are Made From Good-Quality, Flexible Silicone Material That Offers Excellent Chemical Resistance And Long-Lasting Durability. Easy To Clean And Completely Reusable For Multiple Applications.

Package Content: You Will Receive 12 Pieces Of Premium Vial Caps In 6 Vibrant Colors, Perfectly Sized For 5-100ml Glass Vials And Injection Bottles. Ideal For Laboratory Professionals, DIY Enthusiasts, And Essential Oil Storage.

Universal Fit Design: These Vial Caps Are Specifically Engineered To Fit Standard 5-100ml Glass Vials Perfectly. Provides Secure Protection For Opened But Partially Used Vials, Maintaining Contents Freshness And Reducing Waste.

Superior Leakproof Protection: These Protective Vial Caps Feature Airtight Sealing Technology That Creates A Reliable Barrier Against Leaks, Evaporation, And Dust. Ensures Your Liquids, Essential Oils, And Other Sensitive Formulations Stay Pure And Secure.

Color-Coded Organization: These Silicone Vial Caps Come In Six Vibrant Colors, Allowing For Easy Identification And Efficient Organization. Perfect For Workflow Optimization In Professional Laboratories, Research Facilities, And Personal Storage Systems.

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#TOP 3

PATIKIL 20mm Flip Off Caps, 200 Pcs

PATIKIL

ptf240328tt000498eu

White

20mm

PATIKIL 20mm Flip Off Caps, 200 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, White

9.5

FTB Score

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The PATIKIL Flip Off Caps are designed for 20mm glass vials, offering a reliable seal for various containers like oral liquid bottles and essential oil bottles. Made from aluminium and plastic, the caps ensure a smooth, burr-free opening, preventing cotton from getting caught. They can withstand high temperatures, making them suitable for a range of applications. When you remove the plastic cover, the aluminium cap becomes unusable, which guarantees safety and integrity of the contents.

What We Like

Durable aluminium and plastic material

Smooth, burr-free opening

High temperature resistance

Versatile for various bottles

#TOP 4

HAOXYO 12Pcs Set of 3ml Glass Vials Protective Caps-Featuring Leak-Proof Lids and Bottle Opener,Reusable & Easy to Clean Storage Lids for 3ml Injection Vials,Lab Use,(6 Colours)

HAOXYO

Y5-1107

HAOXYO 12Pcs Set of 3ml Glass Vials Protective Caps-Featuring Leak-Proof Lids and Bottle Opener,Reusable & Easy to Clean Storage Lids for 3ml Injection Vials,Lab Use,(6 Colours)

9.4

FTB Score

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Features

Durable & Reusable: Made From Premium Silicone, These Vial Covers Withstand Repeated Use And Are Easily Washable. Simply Rinse With Water For Effortless Maintenance, Ensuring Long-Lasting Performance For All Your Glass Vials Needs.

Colour-Coded Organisation: Receive 12 Protective Caps For Glass Vials In 6 Distinct Colours With A Bottle Opener. Perfect For Colour-Coding Medications Or Solutions In Your Vials, Enabling Quick Identification And Efficient Organisation In Any Setting.

Perfect 3ml Vial Fit: Specifically Designed For 3ml Glass Injection Vials With A 1.5cm Diameter. These Caps Maintain Sterility For Opened But Unused Vials, Providing Ideal Protection For Your Valuable Contents.

Multi-Purpose Usage: Ideal For Research Laboratories, DIY Projects And Home Organisation. Perfectly Suited For 3ml Glass Vials, Sterile Containers And Various Small Vessel Applications.

Leak-Proof Protection: Features A Secure, Tight-Fitting Seal That Prevents Leaks And Evaporation. These Reusable Caps Ensure Your Vial Contents Remain Protected And Secure During Storage Or Transport.

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#TOP 5

18pcs 3ml Glass Vial Protective Caps, 6 Colors Dust-Proof Leakproof Twist-Off Cap Covers for Injection Vials Liquid Storage & Laboratory Use, Easy to Clean

Sinbana

W02098

18pcs 3ml Glass Vial Protective Caps, 6 Colors Dust-Proof Leakproof Twist-Off Cap Covers for Injection Vials Liquid Storage & Laboratory Use, Easy to Clean

9.2

FTB Score

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Features

Excellent Design: These Vial Caps Are Specifically Engineered To Fit For Glass Vials Perfectly. Provides Secure Protection For Opened But Partially Used Vials, Maintaining Contents Freshness And Reducing Waste.

Package Content: You Will Receive 18 Pieces Of Premium Vial Caps In 6 Vibrant Colors, Perfectly Sized For Glass Vials And Injection Bottles. Ideal For Laboratory Professionals, DIY Enthusiasts, And Essential Oil Storage.

Premium Material: Our Peptide Vial Caps Are Made From Good-Quality, Flexible TPU Material That Offers Excellent Chemical Resistance And Long-Lasting Durability. Easy To Clean And Completely Reusable For Multiple Applications.

Leakproof Protection: These Protective Vial Caps Feature Airtight Sealing Technology That Creates A Reliable Barrier Against Leaks, Evaporation, And Dust. Ensures Your Liquids, Essential Oils, And Other Sensitive Formulations Stay Pure And Secure.

Color-Coded Organization: These Silicone Vial Caps Come In Six Vibrant Colors, Including Blue, Purple, Pink, Green, White, Black, Allowing For Easy Identification And Efficient Organization. Perfect For Workflow Optimization In Professional Laboratories, Research Facilities, And Personal Storage Systems.

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#TOP 6

PATIKIL 20mm Flip Off Caps, 200 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, Black

PATIKIL

ptf240328tt000496eu

Black

20mm

PATIKIL 20mm Flip Off Caps, 200 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, Black

9.0

FTB Score

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Features

Advantage:The Cover Is Smooth And Burr-Free After Opening, And The Cotton Will Not Get Caught .

Caps Material: Aluminum, Plastic; Suitable For: 20mm Glass Vial; Inside Diameter: 20mm; Outer Diameter: 22mm; High: 8.5mm

NOTE: Our Store Has Flip Off Caps Of Different Styles, Sizes And Colors To Choose From.

Instruction : The Flip Off Seal Can Withstand High Temperatures. This Cover Is Fully Tear-Off, And When You Tear Off Its Plastic Cover, The Aluminum Cover Becomes Unusable.

Aluminum Plastic Caps Are Suitable For Oral Liquid Bottles, Original Solution Bottles, Essential Oil Bottles, Freeze Dried Bottles, Etc.

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#TOP 7

PATIKIL 20mm Flip Off Caps, 100 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, Blue

PATIKIL

ptf240328tt000487

Blue

20mm

PATIKIL 20mm Flip Off Caps, 100 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, Blue

8.9

FTB Score

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Features

Advantage:The Cover Is Smooth And Burr-Free After Opening, And The Cotton Will Not Get Caught .

Caps Material: Aluminum, Plastic; Suitable For: 20mm Glass Vial; Inside Diameter: 20mm; Outer Diameter: 22mm; High: 8.5mm

NOTE: Our Store Has Flip Off Caps Of Different Styles, Sizes And Colors To Choose From.

Instruction : The Flip Off Seal Can Withstand High Temperatures. This Cover Is Fully Tear-Off, And When You Tear Off Its Plastic Cover, The Aluminum Cover Becomes Unusable.

Aluminum Plastic Caps Are Suitable For Oral Liquid Bottles, Original Solution Bottles, Essential Oil Bottles, Freeze Dried Bottles, Etc.

Read more Read less

#TOP 8

PATIKIL 20mm Flip Off Caps, 100 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, Purple

PATIKIL

ptf240328tt000483eu

Purple

20mm

PATIKIL 20mm Flip Off Caps, 100 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, Purple

8.8

FTB Score

Buy on Amazon

Find on eBay

Features

Advantage:The Cover Is Smooth And Burr-Free After Opening, And The Cotton Will Not Get Caught .

Caps Material: Aluminum, Plastic; Suitable For: 20mm Glass Vial; Inside Diameter: 20mm; Outer Diameter: 22mm; High: 8.5mm

NOTE: Our Store Has Flip Off Caps Of Different Styles, Sizes And Colors To Choose From.

Instruction : The Flip Off Seal Can Withstand High Temperatures. This Cover Is Fully Tear-Off, And When You Tear Off Its Plastic Cover, The Aluminum Cover Becomes Unusable.

Aluminum Plastic Caps Are Suitable For Oral Liquid Bottles, Original Solution Bottles, Essential Oil Bottles, Freeze Dried Bottles, Etc.

Read more Read less

#TOP 9

sourcing map 13mm Flip Off Caps, 100PCS Burr-Free Flip Off Top Caps Seals Flip Off Aluminum Plastic Vial Flip Off Seals Caps Cover for Glass Vial Bottles, Blue/Silver

sourcing map

a24092000ux0317

Blue/Silver

13mm

sourcing map 13mm Flip Off Caps, 100PCS Burr-Free Flip Off Top Caps Seals Flip Off Aluminum Plastic Vial Flip Off Seals Caps Cover for Glass Vial Bottles, Blue/Silver

8.7

FTB Score

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Features

Material - The Cover Is Made Of Good Aluminum And Plastic, Smooth And Burr-Free After Opening, Offering A Secure Seal For Glass Vials.

Product Information - You Will Receive 100 Pcs Of Flip Off Caps For Ample Supply. The Caps Have An Inside Diameter Of 13 Mm/0.5 Inch; An Outer Diameter Of 15 Mm/0.6 Inches; A Height Of 7 Mm/0.3 Inches

How To Use - To Open, Flip Off The Plastic Cap And Remove The Aluminum Seal Using Pliers If Necessary. The Flip Off Seal Can Withstand High Temperatures. But This Cover Is Fully Tear-Off, And When You Tear Off Its Plastic Cover, The Aluminum Cover Becomes Unusable.

Good Seal - The Equipped Plastic-Aluminum Lid Ensures The Tightest Seal And Reduces The Possibility Of Sample Evaporation. This Crimp Top Vial Provides A Good Seal For Long-Term Sample Storage.

Application - The Flip Off Caps Can Be Used In The Laboratory And At Home, With A Good Sealing Effect And Convenient Storage. Suitable For Oral Liquid Bottles, Original Solution Bottles, Essential Oil Bottles, Freeze-Dried Bottles, Etc.

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#TOP 10

PATIKIL 20mm Flip Off Caps, 100 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, White

PATIKIL

ptf240328tt000497eu

White

20mm

PATIKIL 20mm Flip Off Caps, 100 Pcs Flip Off Caps Flip Off Seals Flip Off Vial Seals Plastic Aluminum Caps Cover for Glass Vial, White

8.5

FTB Score

Buy on Amazon

Find on eBay

Features

Advantage:The Cover Is Smooth And Burr-Free After Opening, And The Cotton Will Not Get Caught .

Caps Material: Aluminum, Plastic; Suitable For: 20mm Glass Vial; Inside Diameter: 20mm; Outer Diameter: 22mm; High: 8.5mm

NOTE: Our Store Has Flip Off Caps Of Different Styles, Sizes And Colors To Choose From.

Instruction : The Flip Off Seal Can Withstand High Temperatures. This Cover Is Fully Tear-Off, And When You Tear Off Its Plastic Cover, The Aluminum Cover Becomes Unusable.

Aluminum Plastic Caps Are Suitable For Oral Liquid Bottles, Original Solution Bottles, Essential Oil Bottles, Freeze Dried Bottles, Etc.

Read more Read less

Editor's Notes

During our labware cap research, we found 51 labware cap products and shortlisted 10 quality products. We collected and analyzed 4,907 customer reviews through our big data system to write the labware caps list. We found that most customers choose labware caps with an average price of £20.00.

The labware caps are available for purchase. We have researched hundreds of brands and picked the top brands of labware caps, including Sinbana, Goktvai, PATIKIL, HAOXYO, sourcing map.

Written by

Tom Law

Tom Law is an adventurer who has captured his love for nature into all of his works. A native of Newcastle, Tom has always wanted to share beautiful stories alongside the lovely sights of nature. Fortunately, he took into photography on one of his many journeys and gradually grew a passion for it. Tom Law is now an expert photographer who tours the world while creating and keeping memories of his adventures. He frequently puts his thoughts and experiences into writing.