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The 8 Best science lab cap plugs of 2025

Are you trying to find science lab cap plugs among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling science lab cap plugs on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 14 hours of research and did 64 science lab cap plugs tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best science lab cap plugs you can buy today

No. 1
22-Pack (13 Assorted Sizes) 000# -10# Solid Rubber Stoppers
  • Quantity: 22 Pcs,#000--#6, Each size two.#7--#10, Each size one.
  • Size:Assorted Sizes (000# 00# 0# 1# 2# 3# 4# 5# 6# 7# 8# 9# 10#)
  • High-quality Material: Permium rubber,Ideal for laboratory, household, and industrial applications.
  • Without hole
  • Other sizes from #000 to #10 also available from Enjoyist on Amazon
SaleNo. 2
Globe Scientific 116152K Polyethylene Flange Plug Cap for Test Tubes, 16mm Size, Black (Pack of 1000)
3 Consomer Reviews
Globe Scientific 116152K Polyethylene Flange Plug Cap for Test Tubes, 16mm Size, Black (Pack of 1000)
  • Package Dimensions: 10.921 H x 30.48 L x 20.066 W (centimetres)
  • The caps are available in a 12mm, 13mm and 16mm sizes
  • Package Weight: 0.929 kilograms
  • Country of Origin : United States
No. 3
Corning Disposable Phenolic Threaded Screw Caps with Rubber Liners - GPI 15-415 Disposable Caps for Lab Glassware – Black Screw Cap Lab Caps, Pack of 50
  • DISPOSABLE CAPS: The black screw caps are designed for single use, and are ideal for labs, schools, and home STEM activities and science experiments.
  • 15-415 THREADS: These lab caps are suitable for use with lab tubes that have a GPI 13-415 thread, or other compatible laboratory equipment.
  • PHENOLIC CAPS: Made of a phenolic compound, the black threaded screw caps are finished with a white rubber liner, which is securely glued into position.
  • EASY TO CLEAN: The disposable caps are easy to clean and can be sterilized safely one time in autoclaves at 121°C, making them ideal for use in busy lab environments.
  • CORNING: For nearly 170 years, Corning has combined its unparalleled scientific expertise with deep manufacturing and engineering capabilities to develop life-changing innovations and products.
No. 4
DGZZI 50PCS Locking Cap Lab Supply Syringe Tip Cap Blue Dispensing Syringe Plug for Glue and Paint and Adhesives
  • Product material: made of high quality blue PP material, reusable, sturdy and durable, not easy to damage.
  • Dispensing syringe plugs are suitable for all sizes of syringes.
  • The product is simple and convenient to use: suitable for handheld, easy to hold and remove, good sealing, not easy to fall off.
  • Product use range: Dispensing syringe plugs can be used for craft and industrial work such as glues, paints, adhesives and conformal coatings. Good sealing and tight fit, not easy to leak any liquid.
  • Package includes:50pcs blue dispensing syringe plugs
No. 5
Corning 1395-45LTC Orange Polypropylene GL45 Screw Cap with Plug Seal for Pyrex Media Bottle (Case of 20)
  • Linerless, size GL45 replacement cap secures contents of media bottles to help prevent spills and evaporation
  • Polypropylene body for strength, thermal performance, solvent resistance, and for its ability to be sterilized and autoclaved
  • Plug seal presses against the rim of the bottle to provide a tight seal and a barrier against moisture and gas
  • Country of origin: Germany
No. 6
SPL Cell Culture Flask 25 cm² (T25) Plug Cap Treated, Sterile, 200/Case
  • Ergonomic design to facilitate easy handling
  • Short & wide neck with angled design allow easy access
  • Excellent stackability
  • Non - pyrogenic, Non - cytotoxic, DNase / RNase - free, Human DNA - free
No. 7
BURRY LIFE SCIENCE U 12PCS 3ML White Plastic Empty Squeezable Dropper Bottles Portable Eye Liquid Dropper Small Plastic Refillable Containers with Screw Cap and Plug (White, 3ML)
  • NO LEAKAGE: There is a threaded protective lid for good sealing, safety and leak proof, suitable for travel use.
  • SOFT BOTTLE: Made of high quality PE plastic with good softness. Easy to squeeze and control the liquid well. The eye dropper plug is removable, make it easy to clean thoroughly and easy to inject liquid.
  • PRODUCT FEATURES: Transparent mini container, the body of clear bottle is strong, flexible, and not easy to deform or broken, suitable for a variety of occasions, kitchen, arts, crafting laboratory, etc.
  • WIDE APPLICATION: suitable for travel, storage and storage of liquids.Great for eye drops, paint, essence, light oil, etc. Reusable and durable for long time use.
  • OUR SERVICE:Any queation please contact us for a return and reasonable compensation service.
No. 8
SPL Cell Culture Flask 175 cm2 (T175) Plug Cap, Treatment, Sterile, 40/Case
  • Ergonomic design to facilitate easy handling
  • Short & wide neck with angled design allow easy access
  • Excellent stackability
  • Non - pyrogenic, Non - cytotoxic, DNase / RNase - free, Human DNA - free
  • Venting position for 175 cm2 plug cap
No. 9
Glarks 80Pcs Silicone Rubber End Cap and Tapered Stopper Plug Assortment Kit for Masking Off Holes During Powder Coating, Painting, Hydro Dipping, Media Blasting (80Pcs)
  • ♛【What You Get】: What you will have is a set of high temp silicone caps and plugs with a total of 80pcs in 16 sizes, they can be used to cover holes and pipe ends of various sizes. And, different colors of caps and plugs can help you distinguish different pipes or projects. They are placed in a sturdy carton for easy transportation and storage.
  • ♛【High Temp Resistance】: Our end caps and plugs can bear high temperature up to 216-315 Celsius (420-600 degree), they will not melt or give off unpleasant smell during powder coating, therefore, you can use them in high temp environment with confidence.
  • ♛【Advanced material】: Our products are made of high-quality silicone rubber, this is a no-toxic and odorless environmentally friendly material, so it will not cause harm to the human body or the environment. Moreover, this material is also resistant to acids and alkalies, will not corrode or melt easily.
  • ♛【High elasticity】: The caps and plugs are flexible and stretchable, so it easy to install them or stretch them into the thread to make a great seal. You don't have to worry about the trouble that paint or powder may penetrate into the hole or the water and gas pipeline leaks.
  • ♛【Widely Application】: This end caps are perfect use for covering the water or gas tube end and thread screws. And the tapered plugs are produced to block holes during powder coating, painting, oil injection, hydro dripping, media blasting, etc. Buy this set and put it in your toolbox, they may come in handy at any time.
No. 10
Globe Scientific 118240K Polyethylene Flange Plug Cap for Test Tubes, 13mm Size, Black (Pack of 1000)
  • Package Dimensions: 30.2 H x 7.2 L x 20.8 W (centimetres)
  • The caps are available in a 12mm, 13mm and 16mm sizes
  • Package Weight: 0.567 kilograms
  • Country of Origin : United States
No. 11
21 Pack Solid Rubber Stopper, Black Lab Plug, 000# - 8# Sizes Assortment, 11 Assorted Sizes
520 Consomer Reviews
21 Pack Solid Rubber Stopper, Black Lab Plug, 000# - 8# Sizes Assortment, 11 Assorted Sizes
  • These black stoppers are made of solid natural rubber.
  • 11 assorted sizes: 000# 00# 0# 1# 2# 3# 4# 5# 6# 7# 8#,wide choice for your application.
  • Assorted sizes are ideal for concentrated solutions,such as flask,test tube or other laboratory applications.
  • Pack of 21: 000#,5 pack. 00#-4#,each size 2 pack.5#-8#,each size 1 pack.
No. 13
Globe Scientific 118127C Polyethylene Flange Plug Cap for Test Tubes, 12mm Size, Clear (Pack of 1000)
  • Product Type :Lab Supply
  • Package Dimensions :18.541 cm L X29.21 cm W X5.588 cm H
  • Package Weight :1.15 lbs
  • Country Of Origin :United States
No. 14
DWK Life Sciences 73660-13 KIM-KAP Polypropylene Cap, Natural, 13mm
  • KIM-KAP polypropylene closures for culture tubes
  • Color coded
No. 15
SPL Cell Culture Flask 75 cm2 (T75) Plug Cap Treated Sterile, 100/Case
  • Ergonomic design to facilitate easy handling
  • Short & wide neck with angled design allow easy access
  • Excellent stackability
  • Non – pyrogenic, Non – cytotoxic, DNase / RNase – free, Human DNA – free
No. 17
No. 18
Globe Scientific 118127R Polyethylene Flange Plug Cap for Test Tubes, 12mm Size, Red (Pack of 1000)
  • Made of polyethylene
  • The caps are available in a 12mm, 13mm and 16mm sizes
  • 9 beautiful colors for sample identification purposes
  • Made in United States
No. 20
Globe Scientific 118127W Polyethylene Flange Plug Cap for Test Tubes, 12mm Size, White (Pack of 1000)
  • The caps are available in a 12mm, 13mm and 16mm sizes
  • 9 beautiful colors for sample identification purposes
  • Made of polyethylene

How to choose a good science lab cap plugs

Does the idea of finding a fantastic science lab cap plugs make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in science lab cap plugs. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top science lab cap plugs products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top science lab cap plugs on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top science lab cap plugs brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top science lab cap plugs based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the science lab cap plugs were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good science lab cap plugs, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your science lab cap plugs.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting science lab cap plugs for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our science lab cap plugs. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what science lab cap plugs should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on science lab cap plugs.