Advertising Disclosure

5 Best Lab Stoppers of 2025

Last Updated - 2025/04/30

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.

FunChem

FunChem Solid Rubber Stoppers, (10 Pack) 7# -37mm(1.46") Top, 30mm(1.18") Bottle, 30mm(1.18") Length - White Tapered Lab Seal Rubber Stopper

FunChem

CA$17.99

More Details
Main highlights
- Size: 7#; Upper Diameter: 37mm / 1.46in; Lower Diameter: 30mm / 1.18in; Height: 30mm / 1.18in (might have 1mm measurement error)
- Please note these rubber stoppers are not food grade
- Our Rubber Stoppers provide exceptional seal for many 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
- Excellent resilience and retain pliability over a long period
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.

Cimeton

Cimeton 32PCS Solid Rubber Stoppers Assortment Kits 000#-10# 13 Assorted Sizes Black Lab Plug Tapered Lab Seal Rubber Stoppers for Pipe Tank Bottle Sealing(Black)

Cimeton

CA$17.99

More Details
Main highlights
- 🌟【Wide Application】These rubber stoppers are suitable for laboratory and industrial use, which can be used as bottle stoppers or pipe stoppers in medicine, chemical industry, scientific research, and other industries. Suitable for sealing hole plugs, waterproof plugs, test tube plugs, threaded rubber plugs, dust plug hole covers, etc.
- 🌟【What You Will Get】In this kit, you will get 32pcs black solid rubber stoppers in 13 different sizes, which include 10pcs 000#, 6pcs 00#, 2pcs 0#, 2pcs 1#, 2pcs 2#, 2pcs 3#, 2pcs 4#, 1pcs 5#, 1pcs 6#, 1pcs 7#, 1pcs 8#, 1pcs 9#, 1pcs 10#. The enough quantity and different sizes can meet your can meet your daily use.
- 🌟【Tapered Design】These solid rubber stoppers feature a tapered design, smooth sides, easy insertion and removal, making your work very simple and reusable. They not only promote a sustainable laboratory or classroom environment, but also save costs and time.
- 🌟【Premium Material】Solid rubber stoppers is made of rubber material, which has high elasticity and hardness, not only resistant to high and low temperatures, but also not easily dissolved and expanded by acidic or alkaline liquids. Soft and flexible, with good insulation and sealing performance, not easy to crack, shrink, harden or break, has a long service life.
- 🌟【Assorted Sizes】Black lab plug tapered lab seal come with 13 different sizes, which are 000#, 00#, 0#, 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8#, 9#, 10#. Assorted sizes of black lab plug tapered lab seal can meet various laboratory, industrial and daily use.
CA$17.99
3
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.

Dokpav

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

Dokpav

CA$9.99

CA$10.99
(9% Off)

More Details
Main highlights
- Wide Application: Assorted sizes are ideal for non-aggressive or concentrated solutions, great for bottle, flask, test tube or other laboratory applications.It aslo can be used to make art, small models in life.
- Pack of 16: 000# , 00# , 0#, 1#, 2#, 3#, 4# each size 2 pack, 6# , 7# each size 1 pack.
- Not easy to deform: The rubber stopper has high hardness, smooth surface, and is not easy to deform. High elasticity, good insulation and sealing performance, high temperature resistance ,acid and alkali resistance, will not dissolve and swell in acidic liquids. As a glass bottle stopper, it can achieve a good sealing effect.
- Firm sealing: These white stoppers are made of quality solid rubber。 Chemical instruments without grinding mouths can generally be sealed with rubber stoppers, and rubber stoppers are available in different sizes. The rubber stopper can be drilled with a hole punch and inserted into a glass tube to form a connecting device that can lead out the gas in the sealed container.
- 9 assorted sizes: 000# 00# 0# 1# 2# 3# 4# 6# 7# , wide choice for your application.
CA$9.99
CA$10.99 (9% Off)
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.

Tnisesm

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

Tnisesm

CA$15.99

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$15.99
5

✖
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 White Solid Rubber Stopper, White 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 White 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

5 Best Lab Stoppers of 2025

FunChem Solid Rubber Stoppers, (10 Pack) 7# -37mm(1.46") Top, 30mm(1.18") Bottle, 30mm(1.18") Length - White Tapered Lab Seal Rubber Stopper

Cimeton 32PCS Solid Rubber Stoppers Assortment Kits 000#-10# 13 Assorted Sizes Black Lab Plug Tapered Lab Seal Rubber Stoppers for Pipe Tank Bottle Sealing(Black)

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

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

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

You may also like...

Solid Rubber Stopper,18 pcs Black Rubber Corks Plugs Odor Control Pipe Tank Bottle Push-in Sealing Plug Widely Used in Pots for Plants, Salt,Pepper Shakers,Test Tube and Flasks

uxcell White Tapered Shaped Solid Rubber Stopper for Lab Tube Stopper Size 000 10Pcs

MECCANIXITY Silicone Rubber Solid Plug Soft Flexible Stopper for 8.5-9mm Hole White 15 Pieces

Labasics 5-Pack 8# Dual-Hole Rubber Stoppers, White Tapered Lab Seal Stoppers with 7 mm (0.28") Holes, for Laboratory Glassware, Experimental Setups, and Tight Sealing Applications

Labasics 8# 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

PENCK 5pcs Rubber Stopper with Hole 33mm to 41mm Black Plugs Stoppers Tapered Plug Test Tubes Bungs for Powder Coating Painting Lab Home Use

PENCK 5pcs Solid Rubber Stopper 33mm to 41mm Black Plugs Stoppers Tapered Plug Test Tubes Bungs for Powder Coating Painting Lab Home Use

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

PENCK 5pcs Rubber Stopper with Hole 26mm to 32mm Black Plugs Stoppers Tapered Plug Test Tubes Bungs for Powder Coating Painting Lab Home Use

BorinGlass Solid Rubber Stoppers, 10 Pack 6# - 32mm(1.26in) x 26mm(1.02in) Diameter - 29mm(1.14in) Length - White Tapered Lab Seal Rubber Stopper

Sign up and get exclusive special deals