Advertising Disclosure

5 Best Lab Stoppers of 2025

Last Updated - 2025/09/18

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

XCD

XCD Silicone Stopper, 10-Pack White Tapered Lab Seal Silicone Stoppers Plugs, 7#

XCD

CA$17.99

More Details
Main highlights
- Warranty: in case you receive a defective or damaged item, please reach out to us; we will assist you until the issue is resolved to your satisfaction
- Resilient and Heat-Resistant: crafted to last, these stoppers exhibit excellent resilience and maintain their pliability over extended periods; they are resistant to chemical reagents and heat, withstanding temperatures up to 250 degrees Celsius
- Exceptional Seal: ensuring a tight seal for lab bottles, vials, and containers, these premium silicone stoppers come in a convenient 10-pack, each sized 7#
- Effective Leakage Prevention: enjoy peace of mind with the good sealing performance of these stoppers, effectively preventing solution leakage; note: they are not food grade
- Durable and Reusable: designed for durability and reusability; please review the dimension description image provided carefully to ensure accurate fit (minor measurement errors of up to 1mm may occur)
CA$17.99
2

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

FunChem

FunChem Solid Rubber Stoppers with Single Hole, Size 10#, Set of 5, Precision Tapered Lab Seal Rubber Stoppers for Air-Tight Control

FunChem

CA$16.99

More Details
Main highlights
- Size Specifications: Each stopper is Size 10#, with a top length of 50 mm, bottom length of 41 mm, and height of 34 mm, suitable for a variety of laboratory equipment
- Packaging Quantity: Each pack contains 5 stoppers, providing an ample supply to fulfill your sealing needs conveniently and economically
- Material Composition: Crafted from premium natural rubber, ensuring durability and reliability for various sealing applications
- Guaranteed after-sales service: if received defective or damaged item, please contact us; We will definitely help you solve the problem until you are satisfied
- Durability Assurance: These stoppers are robust and resilient, delivering high reliability and stable performance in diverse environments, ensuring smooth laboratory operations
CA$16.99
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Swpeet

Swpeet 32Pcs 13 Assorted Sizes Black Solid Rubber Stopper, Black Tapered Lab Seal Rubber Stoppers, Black Lab Plug, Tapered Lab Bungs

Swpeet

CA$14.99

More Details
Main highlights
- 💯 Wide Applications: Solid Rubber Stopper suits diverse fields. In labs, it's a key sealing part for flasks and test tubes, vital for chemical tests and research. In industry, it seals containers and pipes in medicine and chemical fields, avoiding leaks and contamination. It's also applicable to simple home sealing tasks.
- 💯 What You Get: In this kit, you will get 32Pcs 13 Assorted Sizes Black Solid Rubber Stopper, including #000 #00 #0 #1 #2 #3 #4 #5 #6 #7 #8 #9 #10. Enough sizes and quantities for you to find the perfect fit. No more hassle of searching for the right size rubber stopper.
- 💯 Reusable Solid Rubber Stopper: The Rubber Plug is cone-shaped, easy to pull and insert, and has good sealing performance, which is very suitable for use with non-corrosive or concentrated solutions. Reusable lab plugs have a long serve life.
- 💯 High-quality Rubber: Lab Plugs are made of premium rubber, durable and practical, not easy to deform, no holes for good sealing performance.
- 💯 13 Sizes Options: The set contains 13 assorted sizes：#000 #00 #0 #1 #2 #3 #4 #5 #6 #7 #8 #9 #10. Whether it's small test tubes, flasks, or larger containers and pipelines, there are appropriate rubber stoppers to seal them.
CA$14.99
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Labasics

Labasics 9# Single-Hole Rubber Stoppers, 5-Pack White Tapered Lab Seal Stoppers with 6 mm (0.23") Hole, Ideal for Laboratory Glassware, Experiments, and Secure Sealing Needs

Labasics

CA$14.99

More Details
Main highlights
- Warranty: 1-year coverage period for your peace of mind, if received damaged, please let us know and we will solve it promptly
- Versatile Design: Includes 5 single-hole rubber stoppers, each with a 6 mm (0.23") hole, ideal for a variety of laboratory applications
- Size: Please refer to the dimension description image before purchasing; note: slight measurement errors of up to 1mm may occur
- Premium Material: Crafted from premium rubber, these stoppers offer excellent flexibility and long-term use
- For Laboratory Use Only: These rubber stoppers are not food grade and are specifically designed for laboratory and experimental purposes
CA$14.99
5
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Tnisesm

Tnisesm 25Pcs Black 000#-7# Solid Rubber Stoppers 10 Assorted Sizes

Tnisesm

CA$14.99

CA$15.99
(6% Off)

More Details
Main highlights
- The rubber plug is cone-shaped, easy to pull and insert, and has good sealing performance, which is very suitable for use with non-corrosive or concentrated solutions.
- Suitable for flasks, test tubes or other laboratory instruments that need to be sealed.
- Note: These rubber stoppers are not food-grade. Please double-check whether the size is appropriate before buying.
- Material: rubber; Color: Black
- 10 Different sizes # 000, # 00, # 0, # 1, # 2, # 3, # 4, # 5, # 6, # 7
CA$14.99
CA$15.99 (6% Off)

5 Best Lab Stoppers of 2025

XCD Silicone Stopper, 10-Pack White Tapered Lab Seal Silicone Stoppers Plugs, 7#

FunChem Solid Rubber Stoppers with Single Hole, Size 10#, Set of 5, Precision Tapered Lab Seal Rubber Stoppers for Air-Tight Control

Swpeet 32Pcs 13 Assorted Sizes Black Solid Rubber Stopper, Black Tapered Lab Seal Rubber Stoppers, Black Lab Plug, Tapered Lab Bungs

Labasics 9# Single-Hole Rubber Stoppers, 5-Pack White Tapered Lab Seal Stoppers with 6 mm (0.23") Hole, Ideal for Laboratory Glassware, Experiments, and Secure Sealing Needs

Tnisesm 25Pcs Black 000#-7# Solid Rubber Stoppers 10 Assorted Sizes

You may also like...

MECCANIXITY Rubber Tapered Plug 54mm to 64mm with Hole Test Tubes Bungs Stopper Black for Lab Home

Labasics 5-Pack 4# Single-Hole Silicone Stoppers, White Tapered Lab Seal Stoppers with 8mm (0.31") Hole, Durable and Reusable Silicone Plugs for Laboratory Glassware, Airtight Sealing, and Experiments

Labasics 5-Pack 4# Dual-Hole Rubber Stoppers, White Tapered Lab Seal Stoppers with 7 mm (0.28") Holes, for Laboratory Glassware, Experimental Setups, and Tight Sealing Applications

MECCANIXITY Rubber Tapered Plug 18mm to 24mm Solid Test Tubes Bungs Stopper with Hole Black for Lab Home 8 Pieces

28 Pack (11 Assorted Sizes) Solid Rubber Stopper, 000# - 8# Tapered Lab Bungs Rubber Corks Plugs, White Lab Seal Stopper Plug for Test Tube and Flasks

Dokpav Solid Rubber Stopper, 16 Pack Tapered Lab Seal Rubber Stoppers, White Laboratory Rubber Plug, Tank Bottle Push-in Sealing Plug, Tapered Hole Bung, 9 Assorted Sizes for Laboratory Chemistry

50 Pcs Solid Rubber Stoppers,Laboratory Rubber Plug,8 mm to 13mm,Rubber Tapered Plug,Lab Test Tube Bungs,Test Tubes Bungs Stopper,Tapered Lab Seal Rubber Stoppers,for Industrial,Laboratory,Home Use

Eoppen 24Pcs Solid Rubber Stopper 11 Assorted Sizes 000# - 8# for Flask, Plug Holes, Lab Seal Rubber Stoppers

FunChem Solid Rubber Stoppers, (10 Pack) 1# -19mm(0.75") Top, 14mm(0.55") Bottle, 25mm(0.98") Length - White Tapered Lab Seal Rubber Stopper

MECCANIXITY Rubber Tapered Plug 16mm to 20mm with Hole Test Tubes Bungs Stopper Black for Lab Home 5 Pieces

Sign up and get exclusive special deals