Top Lab Stoppers and Seals

The best Lab Stoppers includes Newflager 21 Pack Solid Rubber Stoppers, Coldairsoap 110PCS Silicone Tapered Plugs, Myco Labs Self-Healing Injection Ports (50-Pack) and many others as mentioned below.

1

Newflager 21 Pack Solid Rubber Stoppers

  • 21 pack of solid rubber stoppers.
  • Includes 11 assorted sizes for versatility.
  • Made from durable natural rubber material.
  • Perfect for laboratory and testing applications.
  • Sizes range from 000# to 8#.
  • Ideal for flasks, test tubes, and more.
  • Convenient packaging for easy organization.
  • Average Rating out of 5:
  • Price Range: $6.99
2

Coldairsoap 110PCS Silicone Tapered Plugs

  • High-quality silicone rubber construction for durability.
  • Temperature resistant up to 200℃-300℃.
  • Includes 110 pieces in 8 different sizes.
  • Color-coded for easy identification and use.
  • Convenient plastic box for organized storage.
  • Ideal for hole plugs, spraying, and coating.
  • Suitable for various applications in multiple industries.
  • Average Rating out of 5:
  • Price Range: $9.99
  • Color: Pink, Black, Red, Yellow, Blue
  • Material: Silicone, Rubber
3

Myco Labs Self-Healing Injection Ports (50-Pack)

  • Self-healing design for optimal inoculation efficiency.
  • Includes 50 easy-to-peel adhesive ports.
  • Compatible with various spawn bags and jar lids.
  • 3M adhesive ensures strong, lasting bond.
  • Ideal for mushroom cultivation and hobbyists.
  • Resistant to high temperatures during sterilization.
  • Effortless application for error-free inoculation.
  • Average Rating out of 5:
  • Price Range: $11.99
4

Enjoyist Solid Rubber Stoppers (27 Pack)

  • Includes 27 solid rubber stoppers in total.
  • Features 10 assorted sizes for versatile uses.
  • Sizes range from #000 to #7 tapered design.
  • Each size comes with two pieces, except #7.
  • Made from high-quality, durable rubber material.
  • No holes, ideal for non-aggressive solutions.
  • Perfect for lab use and various applications.
  • Average Rating out of 5:
  • Price Range: $7.95
  • Color: Black
  • Material: Rubber
5

Tnisesm 25Pcs Solid Rubber Stoppers (000#-7#)

  • 25 pieces of solid rubber stoppers included.
  • 10 different sizes for versatile usage.
  • Compatible with flasks and test tubes.
  • Made from durable, non-corrosive rubber material.
  • Black color for a professional appearance.
  • Easy to pull and insert for convenience.
  • Not food-grade; check size before purchasing.
  • Average Rating out of 5:
  • Price Range: $7.98
  • Color: 25Pcs 000#-7#
6

QUBORT Solid Rubber Stopper (18 pcs)

  • 18-pack of solid rubber stoppers included.
  • Provides reliable sealing for various applications.
  • Tapered design ensures secure push-in fit.
  • Durable rubber construction resists wear and tear.
  • Easy installation for instant leak-proof seal.
  • Compatible with openings ranging 0.5 to 1.5 inches.
  • Ideal for laboratory setups, pipes, and bottles.
  • Average Rating out of 5:
  • Price Range: $6.99
  • Color: Black
7

Eoppen 24Pcs Assorted Rubber Stoppers

  • 11 assorted sizes for versatile applications.
  • Made of durable, high-quality rubber material.
  • Tapered design for easy insertion and removal.
  • Reusable and long-lasting for cost efficiency.
  • Ideal for laboratory and industrial use.
  • Seals effectively without any holes.
  • Includes 24 pieces to meet diverse needs.
  • Average Rating out of 5:
  • Price Range: $7.98
8

Enjoyist 34 Pack Rubber Stoppers (13 Sizes)

  • 34 pieces in total for versatile use.
  • Includes 13 assorted sizes for flexibility.
  • High-quality premium rubber material used.
  • Designed without holes for effective sealing.
  • Ideal for non-aggressive solution applications.
  • Perfect for lab and home use.
  • Durable and long-lasting for repeated use.
  • Average Rating out of 5:
  • Price Range: $9.99
  • Color: Black
  • Material: Rubber
9

Briwooody 250 Pcs Silicone Tapered Plugs

  • 250 pieces in eight distinct sizes available.
  • High-temperature resistance up to 600 ℉/315 ℃.
  • Durable silicone material for long-lasting use.
  • Flexible design allows multiple reuses effectively.
  • Ideal for powder coating and sandblasting applications.
  • Convenient storage box for easy organization included.
  • Perfect for various masking and protection tasks.
  • Average Rating out of 5:
  • Price Range: $21.99
  • Color: Multicolor
  • Material: Silicone
10

FastRack Drilled Rubber Stopper (#10)

  • Pre-drilled hole fits standard airlocks.
  • Tapered design ensures secure seal.
  • Curved lip prevents sliding into fermenter.
  • Made from BPA-free natural rubber.
  • Compatible with various glass carboys.
  • Creates airtight seal for fermentation.
  • Trusted quality with satisfaction guarantee.
  • Average Rating out of 5:
  • Price Range: $11.50
11

Enjoyist 19-Pack Solid Rubber Stoppers

  • 19-pack of solid rubber stoppers for various needs.
  • Includes ten assorted sizes from #000 to #7.
  • High-quality premium rubber for durability and reliability.
  • Ideal for non-aggressive or concentrated solutions.
  • Each size includes two pieces, except #7.
  • Easy to use for sealing and stopper applications.
  • Additional sizes from #000 to #10 available online.
  • Average Rating out of 5:
  • Price Range: $7.95
  • Color: Black
  • Material: Rubber
12

BOPOREAE Silicone Rubber Plugs (3 Pcs)

  • Includes 3 durable silicone plugs.
  • Fits 50-50.8 mm round holes.
  • Made from safe, non-toxic silicone material.
  • Waterproof, dust-proof, and leak-proof design.
  • Easy to install and reusable for multiple applications.
  • Ideal for furniture and appliance hole covers.
  • Resistant to temperature, wear, and chemical corrosion.
  • Average Rating out of 5:
  • Price Range: $11.81
  • Size: 3mm(0.12"),4mm(0.16"),5mm(0.2"),6.5mm(1/4"),8mm(5/16"),10mm(3/8"),13mm(1/2"),14.1mm(9/16"),15.5mm(5/8"),18mm(11/16"),20mm(3/4"),23mm(7/8"),26mm(1"),29mm(1-1/8"),31.3mm(1-3/16"),34.8mm(1-3/8"),39.3mm(1-1/2"),46.3mm(1-13/16"),51.3mm(2"),61.3mm(2-3/8"),63.6m
  • Color: White
  • Material: Silicone rubber
13

Karter Scientific Cork Stoppers (Pack of 25)

  • High-quality cork stoppers for reliable sealing.
  • Size 5 for versatile applications and uses.
  • Pack of 25 for convenience and bulk savings.
  • Top diameter: 17.4mm for secure fit.
  • Durable and long-lasting material for longevity.
  • Perfect for bottles, jars, and containers.
  • Easy to use and remove when needed.
  • Average Rating out of 5:
  • Price Range: $7.69
14

Zorfeter 20 Pcs White Rubber Stoppers

  • Includes 20 premium white rubber stoppers.
  • Top diameter: 17mm, bottom diameter: 13mm.
  • Height of each stopper: 24mm for versatility.
  • Made from high-quality natural rubber material.
  • Tapered design for easy insertion and removal.
  • Reusable with a long service life for efficiency.
  • Perfect for laboratory and industrial applications.
  • Average Rating out of 5:
  • Price Range: $5.99
15

Chudeng 20mm Rubber Stoppers (100 Count)

  • Compatible with 20mm glass vials and jars.
  • Self-healing design ensures a solid seal.
  • Made from durable, high-stability butyl rubber.
  • Can be sterilized under high-pressure steam.
  • Reusable without losing shape or effectiveness.
  • Ideal for liquid culture and grain masters.
  • Includes 100 count for multiple uses.
  • Average Rating out of 5:
  • Price Range: $6.99
  • Color: Grey
16

RiteBrew Drilled Rubber Stopper (Size)

  • Compatible with airlocks and tubing.
  • Durable rubber material for longevity.
  • Size 10 for ideal fit.
  • Top diameter: 50mm (1.97 inches).
  • Bottom diameter: 42mm (1.65 inches).
  • Perfect for home brewing projects.
  • Easy to clean and reuse.
  • Average Rating out of 5:
  • Price Range: $6.31
17

Enjoyist Solid Rubber Stoppers (5 Sizes)

  • Five assorted sizes: #6, #7, #8, #9, #10.
  • High-quality premium rubber for durability and reliability.
  • Ideal for non-aggressive or concentrated solutions.
  • Perfect for laboratory, workshop, or home use.
  • Easy to use and fits various applications.
  • Available in additional sizes from #000 to #10.
  • Convenient assortment for versatile usage needs.
  • Average Rating out of 5:
  • Price Range: $7.99
  • Color: White
  • Material: Rubber
18

EASYEAH T-Shaped Silicone Rubber Hole Plugs [2 Pcs]

  • Versatile for various sealing applications.
  • High-quality silicone for durability and flexibility.
  • Easy installation without additional tools required.
  • Resistant to high temperatures and chemicals.
  • Reliable T-shape design ensures effective sealing.
  • Includes two plugs for convenient usage.
  • Multiple sizes available for different needs.
  • Average Rating out of 5:
  • Price Range: $15.99
  • Size: 3-3.8mm(0.12-0.15"),4.5-5.3mm(0.18-0.21"),6.3-7mm(0.25-0.28"),7.8-8.5mm(0.31-0.33"),9.5-10.4mm(0.37-0.41"),11-12mm(0.43-0.47"),12.5-13.5mm(0.49-0.53"),14.1-15mm(0.56-0.59"),15.5-16mm(0.61-0.63"),17-18mm(0.67-0.71"),19mm(0.75"),19-20mm(0.75-0.79"),21-22mm(
  • Color: White
  • Material: Silicone
19

Newflager 26 Pack Rubber Stoppers (Assorted Sizes)

  • 26 pack of assorted rubber stoppers.
  • Made from solid natural rubber material.
  • Includes 11 distinct sizes for versatility.
  • Perfect for laboratory and testing applications.
  • Great for flasks, test tubes, and more.
  • Each size available in multiple quantities.
  • Durable and reliable for concentrated solutions.
  • Average Rating out of 5:
  • Price Range: $7.99
20

stonylab Silicone Stoppers [5-Pack] 8mm Hole

  • Perfect for laboratory and home brewing applications.
  • Versatile single-hole design for various equipment.
  • Durable silicone material ensures long-lasting use.
  • Includes five stoppers for economical usage.
  • Precision-crafted for a perfect fit every time.
  • Corrosion-resistant for reliable performance in tough environments.
  • Backed by a 1-year limited warranty.
  • Average Rating out of 5:
  • Price Range: $12.59
21

YUNFOOK Rubber Stoppers (22 Pcs, Assorted Sizes)

  • High-quality, durable solid rubber construction.
  • 22 pieces with 11 assorted sizes available.
  • Tapered design for easy insertion and removal.
  • Good sealing performance for various applications.
  • Ideal for laboratory and industrial use.
  • Reusable and long-lasting for multiple uses.
  • Comprehensive packaging to meet diverse needs.
  • Average Rating out of 5:
  • Price Range: $7.99
22

GORGECRAFT 30Pcs Silicone Hole Plug Set

  • 30PCS silicone stoppers in 5 different sizes.
  • Sizes range from 9.5mm to 15mm inner diameter.
  • Flexible and reusable for various applications.
  • Waterproof and dustproof for effective sealing.
  • Easy to use with T tulead design.
  • Ideal for bottles, pipes, and flower pots.
  • Durable silicone material ensures long-lasting use.
  • Average Rating out of 5:
  • Price Range: $11.99
  • Color: 30pcs 5 Sizes 9.5~15mm
  • Material: Silicone
23

Saim Tapered Rubber Stoppers (6 Pack)

  • High-quality rubber for excellent sealing performance.
  • Measures 32mm top diameter, 26mm bottom diameter.
  • Includes 6 tapered plugs for versatile use.
  • Conical design ensures easy installation and fit.
  • Resistant to cracking, shrinking, and hardening.
  • Suitable for laboratories, bottles, and pipes.
  • Check size before ordering for best fit.
  • Average Rating out of 5:
  • Price Range: $7.58
  • Color: Black
  • Material: Rubber
24

Bonsicoky 10 Pack Rubber Stoppers

  • High-quality, durable rubber construction.
  • Assorted sizes from #000 to #8 included.
  • Tapered design for easy insertion and removal.
  • Withstands temperatures up to 200 degrees Celsius.
  • Ideal for flasks, test tubes, and more.
  • Comprehensive size information provided.
  • Perfect for various sealing applications.
  • Average Rating out of 5:
  • Price Range: $5.49
25

uxcell Rubber Lab Tube Stoppers (Size 000)

  • High-quality rubber material for durability.
  • Size #000 fits 8-13mm openings.
  • Includes 10 pieces for versatile use.
  • High elasticity ensures excellent sealing performance.
  • Resistant to acids and alkalis.
  • Ideal for lab tubes and aquarium use.
  • Effectively blocks glass ports and pipe mouths.
  • Average Rating out of 5:
  • Price Range: $7.69
26

QWORK Hex Head Glass Stopper (2 Pcs)

  • Premium borosilicate glass construction for durability.
  • Acid and alkali resistant for versatile use.
  • Heat resistant design suitable for various applications.
  • Fits standard 24/40 outer joint glassware.
  • Reusable and easy to clean for convenience.
  • Includes 2 hex head glass stoppers in package.
  • Perfect for laboratory and home use alike.
  • Average Rating out of 5:
  • Price Range: $8.47
27

Ira Pollitt 250 Vial Rubber Stoppers

  • Includes 250 pieces of rubber stoppers.
  • High-quality, self-healing rubber material.
  • Designed for 20mm glass vials.
  • Fits openings approximately 12.5mm in diameter.
  • Ideal for mushroom growing and liquid cultures.
  • Reusable and resistant to deformation.
  • Suitable for kitchens, labs, and more.
  • Average Rating out of 5:
  • Price Range: $13.99
28

Enjoyist 22-Pack Solid Rubber Stoppers

  • 22-pack with 13 assorted sizes available.
  • High-quality premium rubber material.
  • Ideal for laboratory and household use.
  • Each size features a solid design.
  • No holes for secure sealing.
  • Versatile for industrial applications.
  • Additional sizes available from Enjoyist on Amazon.
  • Average Rating out of 5:
  • Price Range: $9.99
29

uxcell Silicone T-Shaped Hole Plugs (Pack of 3)

  • High temp silicone material for durability.
  • Perfect for powder coating and painting applications.
  • T-shaped design ensures secure fit.
  • Waterproof sealing for various uses.
  • Includes three plugs per pack.
  • Resistant to acids and alkalis.
  • Easy snap-lock installation into mounting holes.
  • Average Rating out of 5:
  • Price Range: $6.99
  • Size: 2.7x5.5mm,3x7mm,3.4x6.6mm,3.5x6mm,3.5x6.5mm,4x7.5mm,4x9.5mm,4.5x7mm,5x11.5mm,5x12mm,5.5x8mm,5.5x8.5mm,6x12.5mm,6x13mm,6.5x9.5mm,7x13.5mm,7x14mm,7.5x10mm,7.5x10.5mm,8x14.5mm,8x15mm,9x16mm,9.5x12.5mm,10x18mm,10.5x13.5mm,11x19mm,12x20mm,12.5x15mm,12.5x15.5mm
  • Color: Black