Fillers | McMaster-Carr

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7,010 Products

Most Likely Products

Surface Fillers

Repair chips, cracks, and tears in various surfaces

198 products

Sealants

Fill and seal gaps in metal, plastic, wood, and other materials

247 products

TIG Welding Rods

Add extra metal while TIG welding to help flatten welds and hold workpieces together

298 products

All Results

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

198 products

Protective Coatings

Shield surfaces from the surrounding environment

2 products

Wallpaper Brushes

Spread on paste and smooth wrinkles to mount wallpaper

2 products

Sealant Removers

Clean sealant and caulk off tools and other surfaces

2 products

Bottle Fillers

Fill water bottles using chillers or other water sources to cut down on single-use plastic bottles

11 products

Drywall Compound Mashers

Mix drywall compound in large containers

1 product

Seam Rollers

Press down the seams where wall coverings meet for a smooth, continuous appearance

7 products

Drywall Patches

Stick over holes in drywall and cover with drywall compound for quick repairs

3 products

Drywall Tape

Apply to seams and corners before spreading drywall compound for a finished appearance

2 products

Drywall Compound Hawks

Carry drywall compound in one hand so you can apply it with the other

1 product

Concrete Edgers

Create a rounded, finished-looking edge on poured concrete slabs

1 product

Concrete Floats

Smooth the surface of concrete and release trapped air and water

3 products

Concrete Groovers

Add grooves to stop concrete slabs from cracking as they dry, settle, or freeze

1 product

Concrete Curing Vibrators

Increase the strength of concrete mix by shaking trapped air loose

1 product

Concrete Rakes

Push, pull, and level freshly poured concrete

1 product

Asphalt Rakes

Spread and level asphalt

2 products

Concrete Mixing Hoes

Mix concrete, mortar, or plaster; also known as mortar hoes

3 products

Masonry Brushes

Sweep away hardened flecks of mortar, dirt, and other debris

1 product

Stakes

Anchor objects to the ground and mark off areas

4 products

Brooms

Sweep up dust, dirt, and other debris

1 product

Trowels

Spread and scrape mortar, concrete, drywall, and adhesives

18 products

Grout Floats

Smooth and spread grout between tiles

1 product

Brick Jointers

Rub along the mortar between bricks for a uniform, finished appearance

1 product

Stake Pullers

Remove stakes from concrete form boards

1 product

Fastening and Joining

TIG Welding Rods

Add extra metal while TIG welding to help flatten welds and hold workpieces together

298 products

TIG Welding Rod Feeders

Advance TIG rods for controlled welds

1 product

Hot Air Welding Rods

Melt with heat from a welder to create joints between pieces of plastic

98 products

Stick Electrodes

Flux coated for stability and speed when welding most metals

118 products

Gas Welding Rods

Melt in extra metal while gas welding to help workpieces hold together

7 products

Adhesives

Bond surfaces together

628 products

Retaining Compounds

Fill gaps to bond shafts, bearings, press-fit assemblies, and other cylindrical metal parts

43 products

Adhesive Dispensing Gun Nozzles

Pair with cartridges in dispensing guns to control the flow of adhesive

78 products

Adhesive Dispensing Gun Cartridge Plungers

Pair with syringes or dispensing-gun cartridges to push adhesive out

6 products

Adhesive Dispensing Guns

Apply beads of adhesive from a cartridge to surfaces

20 products

Brazing Alloys

Form stronger bonds between metal parts than solder without melting the base material

142 products

Brazing Flux

Clean and prepare metal surfaces for brazing

15 products

Brazing Stop-Off

Keep flux and metal from flowing into unwanted areas while brazing

2 products

Solder

Join pieces of metal without melting the base material

357 products

Soldering Flux

Clean and prepare surfaces for soldering

64 products

Solder Wire Feeders

Feed precise amounts of wire to the tip of your iron for efficient soldering

1 product

Tape

Bind, seal, and mark surfaces

36 products

Sealing

Sealants

Fill and seal gaps in metal, plastic, wood, and other materials

247 products

Backer Rods

Insert into gaps before caulking to reduce how much sealant you need and improve adhesion

35 products

Caulk Guns

Cartridge, sausage-pack, and bulk-load caulk guns

40 products

Caulk Gun Nozzles

Attach to caulk guns to change the shape and amount of sealant that's dispensed

12 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

179 products

Backer Rod Insertion Tools

Quickly set foam backer rods in caulk joints at a consistent depth without puncturing them

2 products

Sealant Primers

Apply to surfaces before sealant to speed up drying times and improve adhesion

9 products

Raw Materials

Additives and Fillers

Mix into coatings, resins, polymers, and metal to boost strength, conductivity, and lubricity

24 products

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

2,672 products

Fumed Silica

Commonly used as a thickener, desiccant, and mild abrasive

1 product

Diatomaceous Earth

Typically used as a sorbent, mild abrasive, filtration aid, and insecticide

1 product

Aluminum Oxide

Commonly used as an abrasive for grinding, sanding, and polishing

1 product

Calcium Carbonate

Often used as a buffing and polishing agent and abrasive blasting media

2 products

Sodium Carbonate

Often used in pH control, disinfectants, and flue gas purification; also known as soda ash

3 products

Molybdenum Disulfide

Apply directly to lubricate parts or mix into other substances to increase their lubricity

1 product

Magnesium Sulfate

Often used to regulate viscosity in soaps and detergents; also known as Epsom Salt

2 products

Hydrated Lime

Often used to make building materials, such as mortars and cement, and to treat air and water

2 products

Corn Starch

Often used as a thickener, mold-release agent, and soft abrasive blasting media

3 products

Calcium Chloride

Often mixed with concrete so it sets faster as well as spread over roads to melt ice and absorb dust

2 products

Bentonite

Often used to increase the plasticity of ceramics and purify water

2 products

Copper Sulfate

Often used as an algicide, in electroplating solutions, and to remove water from organic compounds

2 products

Pumice

Often used to polish surfaces and as a component in plaster and concrete to make them lighter weight

2 products

Electrical

Circuit Breaker Box Filler Plates

Conceal live electrical components in circuit breaker boxes to prevent injury and damage

2 products

Thermal Interface Material

Dissipate heat away from electronic components

46 products

Battery Filler Gun Couplers

Replace the coupler on your battery filler gun to connect to a garden hose

1 product

Battery Fillers

Add distilled water to wet-cell lead acid batteries to maintain their performance

9 products

Battery Filler Cart Replacement Parts

Replace chargers, hoses, switch panels, and valves on battery filler carts

4 products

Battery Filler Guns

Fasten to a battery filler or hose to fill wet-cell lead acid batteries in hard-to-reach places

2 products

Battery Filler Nozzles

Replace the nozzle on your battery filler

1 product

Battery Vent Caps

Flip open to check water levels and fill wet-cell batteries

1 product

Batteries

Household, button/coin cell, large-cell, and cordless tool batteries

1 product

Material Handling

Packing Paper

Guard items from scratches and stop food from sticking during manufacturing, shipping, and storing

102 products

Expanding Foam

Conforms to and cushions items in boxes to keep them from banging around the box during transit

7 products

Packing Peanuts

Loosely fill the space around items in boxes to reduce shifting and impact during transit

2 products

Foam Wrap

Cushion items with less bulk than bubble wrap to protect them while shipping and storing

15 products

Corrugated Sheets

Slide between pallets and stacked items to protect them from damage or reinforce the bottom of boxes

20 products

Packing Peanut Dispensers

Guide packing peanuts into shipping containers

1 product

Shipping Air Bags

Inflate and place between items to cushion them and keep them from tipping and shifting in transit

9 products

Bubble Wrap

Air bubbles cushion fragile items better than foam to protect them while shipping and storing

16 products

Shipping Box Liners

Line cardboard boxes to keep the items inside at a consistent temperature

13 products

Protective Shipping Box Inserts

Fit snugly around glass bottles to absorb shock better than bubble wrap and air pillows

3 products

Heating, Ventilation, and Air Conditioning

Spray Foam Insulation

Expands to fill in cracks, gaps, and other hollow spaces for a tight seal against drafts and heat

15 products

Insulation Fill

Blow into walls to fill gaps in existing insulation, or mix as a filler in insulating cement

1 product

Thermal Insulation Sheets

Line the walls of furnaces, freezers, ductwork, and buildings to keep heat in or out

251 products

Pipe Insulation

Fit around pipe, tubing, and tanks to reduce heat loss or condensation

888 products

Containers, Storage, and Furniture

Pipette Pumps

Use with a pipette to comfortably draw and dispense exact quantities with one hand

6 products

Bulk Dispensers

Quickly dispense large amounts of material

3 products

Drywall Compound Pans

Mix small batches of drywall compound and bring them to your work area; also known as mud pans

1 product

Well Plate Fillers

Fill and dispense 96 wells all at once

1 product

Concrete Mixing Boxes

Mix concrete in seamless boxes that won't crack or leak

2 products

Tank Patches

Spin with a handheld electric router to seal holes in plastic tanks and containers

2 products

Fabricating and Machining

Drywall Knives

Smoothly spread drywall compounds and also scrape off paint and debris

11 products