Top 10 Best rubber plugs in 2026

Last Updated - 6/8/2026

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Rubber Vacuum Caps Plug Kit, 102 PCS Assorted Vacuum Plugs Hose End Caps Assortment Kit for Carburetor, Manifold, Automotive 3/16'' 5/16" 7/32" 1/4" 5/32'' 3/8''

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Come with 6 SIZE & 102 QUANTITY: 3/8" ID(1" Length): 6PCS, 5/16" ID(7/8" Length): 10PCS, 1/4" ID(1-1/4" Length): 11PCS, 7/32" ID(47/64" Length): 25PCS, 5/32" ID(39/64" Length): 25PCS, 3/16" ID(11/16" Length): 25PCS
•Made of Flexible and Durable High Quality Rubber Material: They have good electric resistance capability, Corrosion resistance, high temperature resistance, UV resistant, more durable and tear-resistant, THICK and solid
•【Practical and Space Saving】Comes with a convenient plastic storage case. It's easy to find correct vacuum caps quickly, saves your time of running around looking for a particular size
•Good assortment of caps worked for your application: Provide a snug, airtight fit for your vacuum project. Used as an ordinary end cap, which can cover any scratches or burrs that may occur during the cutting process, provide protection against injury by pointed rod and tubing edges
•WIDE AUTOMOTIVE APPLICATION: Provide a tight fit to prevent vacuum leakage. Widely used in carburetor, manifold, pipelines, hoses, coolant and vacuum ports, hvac business, emmisions port on a carburetor, sensitive sensors from debris during maintenance/repairs

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$8.99

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Gysxrda

Gysxrda Rubber Grommet Kit 200 Pack - 7 Sizes Firewall Rubber Hole Plugs Rubber Grommets for Wiring, Automotive, Home Improvement Cord Pipe Wire Organization (7/25, 3/8, 1/2, 5/8, 3/4, 7/8, 1 inch)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•🔵 BRILLIANT QUALITY: Our rubber grommets automotive are manufactured with high quality rubber for greater flexibility and resilience, resistant weather, tear, corrosion, it does not dry up or crack and come lose easily and to protect your cables, cords, and pipes. These flexible blind automotive rubber grommet kit fit all your vehicles from cars and trucks to motorcycles and boats, Say goodbye to the electrical damage caused by water and dust entering the inside of the hood through the holes.
•🔵 GREAT FUNCTION: Closed rubber grommets are commonly used to protect or cover holes and to protect cables or wires from sharp corners or edges, SAFELY and EFFECTIVELY GRIPS WIRE to protect against fire hazards. firewall grommets automotive are also important parts in automotive applications, it can also effectively reduce vibration and are used to seal different important under-the-hood and body applications.
•🔵 WIDE APPLICATION: Rubber grommet assortment kit is useful in many professions like plumbers, mechanics, electricians, DIY'er, etc, used to fit parts together for appliances such as Automotive, RV, Boat, valve, pump, landscaping wiring, furniture, radar detector, dash/rear view Backup camera, GPS navigation, audio speakers and wiring of different mechanisms, etc.
•🔵 WHAT WILL YOU GET: 200 pieces of the most commonly used 7 different rubber plugs for holes assorted sizes - 7/25, 3/8, 1/2, 5/8, 3/4, 7/8, and 1 inch. - Organized in a divided case so you can quickly and easily size your Rubber grommets - to meet all your needs with a rubber grommet tool kit all-purpose
•💖 100% SATISFACTION WITH NO WORRIES: If you have any questions or are dissatisfied with our rubber grommets, please feel free to contact us and we will reply to you within 24 hours. We’re not just sure that you will love these rubber grommet kit, we're truly dedicated to your 100% satisfaction.

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$9.99

$11.99

-17%

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Top Secret PDR

50-Piece Plastic Plug Set - Auto Body Plugs for Round Holes - Sheet Metal & Hole Plugs - Automotive

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•50 Piece Flush Mount Black Hole Plug Assortment for Auto Body and Sheet Metal Plugs. EACH Size is sorted and Bagged individually. Example all 1/4" are in one bag all 2" Inch are in another. All 9 sizes bagged inside of another bag.
•AUTO BODY and SHEET METAL Plugs. 50 Pieces total (10) 1/4" and (5) each of the following sizes. 3/8", 1/2",3/4", 1", 1 1/14", 1 1/2", 1 3/4", 2", Can be snapped into holes easily Held in place by a bead until deliberately removed! These plugs can be sealed and Painted.
•Plastic plugs rather stiff to stay in place. These Plugs are INTENDED for Flat surfaces.
•Tolerances for proper fitment +-.010"
•These plugs Have Many uses such as spoiler delete plugs. Auto Body Plugs, Plastic bins Ect. If your hole is slightly oversized you can use a sealer to seal them in. I use Silicone, Plug sealant, and other material compatible sealer.
•FOR SNAP IN FEATURE MATERIAL THICKNESS MAX IS .080" IF the Material you are using these on is thicker. you will need to use another method to seal them in place. These plugs are paintable.
•compare to UPC 703570181178, 656729198056, 785524940321
•SIZES INCLUDED ARE 1/4" (10 pieces) 3/8" (5) 1/2" (5) 3/4" (5) 1" (5) 1 1/4" (5) 1 1/2" (5) 1 3/4" (5) 2" (5) for a total of (50) Pieces

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$16.99

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Newflager

21 Pack Solid Rubber Stopper, Black Lab Plug, 000# - 8# Sizes Assortment, 11 Assorted Sizes

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•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.

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$6.99

$7.99

-13%

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Coldairsoap

110PCS Silicone Rubber Tapered Plug, Coldairsoap High-Temperature Resistant Rubber Stoppers 8 Size 1/16" to 5/8" for Hole Plugs, Spraying, Coating, Painting Protection

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•High-Quality Material: The industrial powder coating kit is made of silicone rubber. It is sturdy, non-toxic, harmless, and good sealing is not easy to crack, it ensures a long-lasting performance
•High-Temperature Resistance: Our silicone rubber plug for coating with high-temperature resistance of up to 200℃-300℃, has strong stability and corrosion resistance
•Package Quantity: Rubber stoppers total include 110 PCS in 8 different sizes, sizes from 1/16" to 5/8". Color in pink, black, red, yellow, and blue, suitable for many sizes of holes used
•Plastic Box Packaging: The tapered hole plug packed with a plastic box, divided into areas according to different sizes, more convenient use, and storage
•Wide Application: Solid rubber stoppers are widely used for hole plugs, spraying, coating, and paint protection, and widely for blocking transmission, brake, vacuum pipelines, and ports in chemicals, machinery, construction, or laboratories

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$9.99

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HINGTAI

125Pcs Black Rubber Plug Box, Various Sizes of Round Hole Silicone Tool, Rubber Plugs for Round Holes, Silicone Plugs Suitable for Car Wiring Furniture

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•【Premium Material】Our rubber plugs for round holes products are produced by high-tech factories with modern technology. This set of black rubber plugs is made of the best silicone on the market, which has great elasticity and you can use it with confidence. And our products are made of good materials and the quality is guaranteed to provide you with a long service life. They also have the characteristics of high temperature resistance.
•【Features】Our rubber plugs products are carefully designed by professional designers. This set of black rubber rings adopts an automatic buckle design, which can ensure a firm fit and lock in place after installation. Our black rubber rings are not easy to fall off, which will bring you a good use experience. And this set of black rubber rings is highly wear-resistant and can withstand a certain degree of friction.
•【Easy To Use】Our rubber plug products are easy to use and will give you an efficient use experience. You do not need to prepare additional auxiliary tools to complete the installation during use. Our products have different sizes, and you can choose rubber rings of different sizes according to actual needs. This set of black rubber rings is very elastic and can be directly pressed into the hole.
•【Wide Applications】This is a set of widely used products for replacing worn or broken washers in leaking faucets. Our black round hole rubber plug is a versatile product that can be used to hide and cover holes, and can be used for any hole in the home environment. This black round hole rubber plug can ensure that your kitchen, bedroom, bedroom, living room, office, classroom and other places remain clean and comfortable.
•【What You Will Get】You will receive a set of black rubber stoppers in a box for your use. Our product includes 125 pieces in sufficient quantity and different sizes to meet your needs. You can use it in public places or at home.If you have any questions about our rubber hole plugs products during use, please let us know and we will solve the problem for you as soon as possible. We sincerely hope to bring you a pleasant experience.

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$15.99

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BUSY-CORNER

110 PCS Vacuum Caps Assortment, Vacuum Plugs Hose End Cap, Rubber Vacuum Caps Kit for Carburetor, Manifold, Automotive, 3/16'' 5/16'' 7/32'' 1/4'' 5/32'' 3/8'' 1/8'' 1/2'' 5/8''

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Multi Size - Rubber Vacuum Caps Plus Kit With 9 Different Size:1/8''(20pcs), 5/32''(20pcs), 3/16''(20pcs), 7/32''(20pcs), 1/4''(10pcs), 5/16''(6pcs), 3/8''(6pcs), 1/2''(6pcs), 5/8''(2pcs), Which Can Meet Different Needs.
•Material - Vacuum Caps are Made of High Quality Rubber, Soft, Durable, Flexible and Insulated, Corrosion Resistance, High Temperature Resistance.
•Packing - 110PCS Vacuum Caps Rubber Plug Kit Comes With a Plastic Storage Case.You are Easy to Find Different Sizes Vacuum Caps to Use.
•Wide Features - Rubber Vacuum Caps Can Provide a Tight Fit to Prevent Vacuum Leakage. Widely Used in Carburetor, Manifold, Automotive, Pipelines and Hoses etc.
•Refund Guarantee - We are confident that you will have a great experience with Busy-Corner Rubber Caps Assortment. Customer Satisfaction is our TOP priority. if you have any problem, please feel free to contact us.

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$9.97

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mankk

mankk 188PCS Closed Rubber Grommet Kit Firewall Hole Plug Assortment Kit 7 Size(7/25" 3/8" 1/2" 5/8" 3/4" 7/8" 1") Drill Hole Round Rubber Hole Plug with Knife

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Rubber Grommet Firewall Hole Plug are rubber materials, strong flexibility, folding resistance, abrasion resistance, pressure resistance,high temperature resistance, aging resistance, long lasting,cushioning and shock absorption, safe, non-toxic and tasteless, with exquisite appearance.
•Product Features:The firewall solid closed hole plug not only helps us solve the trouble of wire and cable management, but also prevents the wire and cable from touching the pointed metal and protects the cable from dust and rain.
•Easy To Use:We equip the product with a retractable utility knife,when in use, you can adjust the diameter of the rubber gasket according to the thickness of your own cable,and cut freely.
•Wide Use:Firewall plug gaskets can be used in electrical appliances,office equipment,pumps,cylinders,valves,various pipelines,etc.
•Quantity:58PCS*M7.14+44PCS*M9.53+30PCS*M12.07+20PCS*M15.88+16PCS*M19.05+10PCS*M22.23+10PCS*M25.4+1PCS retractable utility knife.A total of 188PCS Rubber Grommet,enough replacement to suit your needs.The are placed in a transparent plastic box, each size of rubber grommet are sorted separately which is easy to transport and distinguish.

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$11.99

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cobee

cobee 80 Pcs Silicone Rubber Hole Plug, 8 Sizes Plastic Hole Plugs Silicone Plug Cap Set, Black High Temp T-Type Hole Plug for Powder Coating Waterproof Sealing Plugs Pipe Holes Test Tube Plugs

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•【Package Included】This silicone plug cap set includes 80 T-shaped rubber plugs for round holes in 8 different sizes, each with 10 pieces. The sizes are 4 mm/5.5 mm/6 mm/6.5 mm/7.5 mm/8 mm/8.5 mm/9.5 mm, ensuring you have the right plastic hole plugs for various applications.
•【Reliable Material】Our plastic plugs for round holes are made of high-quality silicone rubber, which offers excellent elasticity, insulation, and sealing performance. These rubber plugs for round holes can withstand high temperatures and resist acid and alkali, making them durable and long-lasting.
•【Multiple Sizes】The silicone plug cap set comes in 8 sizes, ranging from 4mm to 9.5mm in diameter. This variety ensures that you can find the perfect round tube hole plug for any project, whether for sealing pipes, test tubes, or other round holes.
•【Easy to Use & Store】These plastic hole plugs are designed for easy installation and removal. Simply press the rubber plugs for round holes into the desired hole, and they will snap-lock into place. The set comes in a convenient self-sealing bag for easy storage and organization.
•【Wide Application】Our round tube hole plug set is versatile and can be used in various industries, including automotive, electrical, and construction. These plastic plugs for round holes are perfect for covering, hiding, and decorating holes, ensuring a clean and professional finish.

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$8.49

$8.99

-6%

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Caplugs

50 Piece Flush Mount Black Hole Plug Assortment for Auto Body and Sheet Metal

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Assortment of 50 flush head style hole plugs commonly used in a variety of professional applications in automotive sheet metal, heating and ventilating, and body shops and the garage. Attractive plug fits sheet metal up to 0.080 thick. Installs easily and securely. Made of durable black polyethylene material. Individually bagged by plug size. Each order contains 10 pieces 1/4” 5 pieces of each of the following 3/8” 1/2” 3/4” 1” 1 1/4” 1 1/2” 1 3/4” 2” For a total of 50 plugs
•These plugs are for the size of hole they will fill. They heads are a little bit wider to keep the plugs from going through the hole. Please see images for what the plugs look like. These are designed for use in sheet metal and plastic to plug holes and will snap into a cleanly drilled properly sized hole of your hole is slightly oversized you may need some sort of glue or sealant to hold them in place.
•MAXIMUM MATERIAL PLUG IS INSERTED INTO THICKNESS .080" Unless otherwise specified below Item Hole Size (IN) Hole Size (mm)Metal Thickness (IN) Metal Thickness (mm)Dim A (IN) Dim B (IN) Dim C (IN)
•1/4" .24 - .25 6.10 - 6.35 0.02 - 0.07 0.51 - 1.78 0.21 0.50 0.28 3/8" .37 - .38 9.40 - 9.65 0.02 - 0.05 0.51 - 1.27 0.19 0.75 0.41 1/2" .49 - .51 12.45 - 12.95 0.03 - 0.08 0.76 - 2.03 0.25 0.86 0.54 3/4 .73 - .76 18.54 - 19.30 0.05 - 0.11 1.27 - 2.79 0.291.010.79 1" 1.00 25.40 0.03 - 0.08 0.76 - 2.03 0.251.381.04 1 1/4" 1.25 31.75 0.03 - 0.08 0.76 - 2.03 0.251.621.29 1 1/2" 1.50 38.100.03 - 0.080.76 - 2.030.251.881.
•Please note that these are made of High Grade LDPE Plastic and not Rubber. These have less Flexibility than Rubber made.

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$12.99

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