McMaster-Carr logo
    Filter by
    System of Measurement
    Hardness Rating
    Length
    Construction
    Yield Strength
    Industrial Info Snippet
    Tolerance Rating
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Compare
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Compare
    Thread Size
    Industrial Info Snippet
    Heat Treatment
    Appearance
    Fitting Connection
    For Use Outdoors
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    29 Products

    Plastic Balls

    Image of Product. Front orientation. Plastic. Plastic Balls.
    PTFE—Offering a nonstick, slippery surface, these PTFE balls are often used as bearings and in ball valves. They offer superior chemical resistance and perform well in extreme temperatures. These balls are also excellent electrical insulators.
    Dia.
    Dia. Tolerance
    Min. Temp.,
    ° F
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    Chemical Resistant
     
    PTFE
    4"-0.005" to 0.005"-450500White19660K790000000
     

    Steel Balls

    Image of Product. Front orientation. Steel. Steel Balls.
    Wear-Resistant 52100 Alloy Steel—High carbon and chromium content makes this 52100 alloy steel extremely hard and resistant to wear. It’s also known as chrome steel. Often used as bearings, these balls are hardened for increased abrasion and impact resistance.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.
    Dia. Tolerance
    Heat
    Treatment
    Yield Strength,
    psi
    Hardness
    Appearance
    Pkg.
    Qty.
    Pkg.
    Wear-Resistant 52100 Alloy Steel
    4"-0.0005" to 0.0005"Hardened295,000Rockwell C60 (Extra Hard)Mirror Like19528K1310000000
     

    Rubber Balls

    Image of Product. Front orientation. Rubber. Rubber Balls.
    Use rubber balls for a variety of applications, including cleaning, vibration damping, and sealing.
    Tear- and Abrasion-Resistant Polyurethane Rubber—These balls combine the shock-absorbing qualities of rubber with the strength of plastic. Use as seals in pumps and check valves or let them bounce inside of vibrating sifters for an effective screen cleaner.
    Tear- and Abrasion-Resistant Polyurethane Rubber with Steel Core—A steel core makes these heavier than standard polyurethane balls, so they’re often used to offset buoyancy or to reach a specific weight.
    Dia.
    Dia. Tolerance
    Hardness
    Temp.,
    ° F
    For Use
    Outdoors
    Each
    Tear- and Abrasion-Resistant Polyurethane Rubber
     
    Black
    4"-0.020" to 0.020"Durometer 95A (Extra Hard)-20 to 200Yes6490K27000000
     
    Tear- and Abrasion-Resistant Polyurethane Rubber with Steel Core
     
    Black
    4"-0.020" to 0.020"Durometer 95A (Extra Hard)-20 to 200Yes6490K42000000
     

    Floats for Threaded Rods

    Connect these floats to threaded float rods (not included). Use them to replace an existing float or combine with rods and float valve bodies (not included) to build a float valve.
    Polypropylene Cylinder Floats
    Image of Product. Front orientation. Floats. Floats for Threaded Rods, Polypropylene Cylinder Floats.
    Polypropylene floats are lightweight and meet NSF/ANSI 61 standards for safe use with drinking water.
    Cylindrical floats are all self-tapping except those with a 4” diameter, which have a threaded hose connection.
    Dia.
    Lg.
    Thread
    Size
    Thread
    Type
    Gender
    Max.
    Pressure
    Temp. Range,
    ° F
    Color
    For Container
    Type
    Food Industry
    Std.
    Each
    4"6"1/4"-20
    		UNC
    		FemaleNot Rated35 to 175Off-WhiteOpen TankNSF/ANSI 61
    		9775K2100000
    Polypropylene Oblong Floats
    Image of Product. Oblong Polypropylene. Front orientation. Floats. Floats for Threaded Rods, Polypropylene Oblong Floats.

    Oblong Polypropylene

    Polypropylene floats are lightweight and meet NSF/ANSI 61 standards for safe use with drinking water.
    Dia.
    Lg.
    Thread
    Size
    Thread
    Type
    Gender
    Max.
    Pressure
    Temp. Range,
    ° F
    Color
    For Container
    Type
    Food Industry
    Std.
    Each
    4"5"1/4"-20
    		UNC
    		FemaleNot Rated35 to 175Off-WhiteOpen TankNSF/ANSI 61
    		9775K1200000
    304 Stainless Steel Ball Floats
    Image of Product. Front orientation. Floats. Floats for Threaded Rods, 304 Stainless Steel Ball Floats.
    Stainless steel floats have excellent corrosion resistance and are also for use with oil.
    Dia.
    Pipe
    Size
    Thread
    Type
    Gender
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Ga.
    For Container Type
    Each
    4"1/8
    		NPT
    		Female112-30 to 22524Open Tank, Closed Tank2817K21000000
    4"1/8
    		NPT
    		Female750-30 to 22520Open Tank, Closed Tank2817K2200000
    304 Stainless Steel Oblong Floats
    Image of Product. Front orientation. Floats. Floats for Threaded Rods, 304 Stainless Steel Oblong Floats.
    Stainless steel floats have excellent corrosion resistance and are also for use with oil.
    Dia.
    Lg.
    Thread
    Size
    Pipe
    Size
    Thread
    Type
    Gender
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Ga.
    For Container Type
    Each
    4"6"—1/4
    		NPT
    		Female125-30 to 22520Open Tank, Closed Tank2817K470000000
    4"7"1/4"-20
    		—UNC
    		Female150-30 to 22520Open Tank, Closed Tank2817K46000000
    316 Stainless Steel Ball Floats
    Image of Product. Front orientation. Floats. Floats for Threaded Rods, 316 Stainless Steel Ball Floats.
    Stainless steel floats have excellent corrosion resistance and are also for use with oil.
    Dia.
    Thread
    Size
    Pipe
    Size
    Thread
    Type
    Gender
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Ga.
    For Container Type
    Each
    4"—1/8
    		NPT
    		Female112-30 to 22524Open Tank, Closed Tank2762K410000000
    4"—1/8
    		NPT
    		Female750-30 to 22520Open Tank, Closed Tank2762K4200000
    4"1/4"-20
    		—UNC
    		Female17535 to 21022Open Tank2762K2200000
    316 Stainless Steel Oblong Floats
    Image of Product. Front orientation. Floats. Floats for Threaded Rods, 316 Stainless Steel Oblong Floats.
    Stainless steel floats have excellent corrosion resistance and are also for use with oil.
    Dia.
    Lg.
    Thread
    Size
    Pipe
    Size
    Thread
    Type
    Gender
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Ga.
    For Container Type
    Each
    4"6"—1/4
    		NPT
    		Female125-30 to 22520Open Tank, Closed Tank2762K670000000
    4"7"1/4"-20
    		—UNC
    		Female100-30 to 22520Open Tank, Closed Tank2762K66000000
    Copper Ball Floats
    Image of Product. Front orientation. Floats. Floats for Threaded Rods, Copper Ball Floats.
    Dia.
    Thread
    Size
    Pipe
    Size
    Thread
    Type
    Gender
    Max.
    Pressure
    Temp. Range,
    ° F
    Ga.
    For Container
    Type
    Each
    4"—1/8
    		NPT
    		FemaleNot Rated35 to 18023Open Tank2892K18000000
    4"1/4"-20
    		—UNC
    		FemaleNot Rated35 to 18024Open Tank2892K1700000
    Copper Oblong Floats
    Image of Product. Front orientation. Floats. Floats for Threaded Rods, Copper Oblong Floats.
    Dia.
    Lg.
    Thread
    Size
    Thread
    Type
    Gender
    Max.
    Pressure
    Temp. Range,
    ° F
    Ga.
    For Container
    Type
    Each
    4"5"1/4"-20
    		UNC
    		FemaleNot Rated35 to 18024Open Tank2892K42000000
    4"7"1/4"-20
    		UNC
    		FemaleNot Rated35 to 18024Open Tank2892K4300000

    Floats without Connections

    Image of Product. Front orientation. Floats. Floats without Connections.
    These floats are untethered by a float rod so they can float freely in your tank.
    316 Stainless Steel—316 stainless steel floats are more corrosion resistant than 304 stainless steel floats.
    Dia.
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Ga.
    For Container Type
    Each
    304 Stainless Steel Ball Floats—For Hydraulic Fluid, Oil, and Water
    4"375-30 to 22520Open Tank, Closed Tank2833K21000000
     
    316 Stainless Steel Ball Floats—For Hydraulic Fluid, For Oil, For Water
    4"375-30 to 22520Open Tank, Closed Tank2833K71000000
     

    Through-Hole Floats

    Image of Product. Front orientation. Floats. Through-Hole Floats.
    The through-hole connection allows these floats to slide up and down a vertical float rod (not included). Use clamps (not included) to set them in a fixed position.
    304 Stainless Steel Ball—For Water and Hydraulic Fluid
    Dia.
    Through-Hole
    Dia.
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Ga.
    For Container
    Type
    Each
    4"1/4"500-30 to 22520Open Tank2832K140000000
    4"3/8"500-30 to 22520Open Tank2832K15000000
    316 Stainless Steel Ball Floats—For Hydraulic Fluid, For Water
    Dia.
    Through-Hole
    Dia.
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Ga.
    For Container
    Type
    Each
    4"1/4"500-30 to 22520Open Tank2885K140000000
    4"3/8"500-30 to 22520Open Tank2885K15000000

    Scouring Balls

    Image of Product. Front orientation. Scouring Pads. Scouring Balls.
    Remove rust and baked-on grease with a rounded shape that fits naturally in your hand. These balls won’t rust or splinter, so you can use them wet or dry.
    Medium Abrasion—Best for general purpose cleaning. Made of brass or copper, these balls are softer than stainless steel balls, so they’re less likely to scratch softer metals, such as aluminum and stainless steel.
    Heavy Abrasion—Ideal for challenging jobs. Made of stainless steel, these balls remove rust, oxidation, and baked-on residue. Use them on durable surfaces that can withstand some scratching, such as cast iron and concrete.
    Extra-Heavy Abrasion—Deliver an intense clean for the most demanding jobs. Made of stainless steel, these balls remove corrosion and break down thick grime buildup on the most durable surfaces that you aren’t afraid to scratch.
    Small Pack
    Large Pack
    Abrasion
    Type
    Dia.
    Wt.,
    g
    Material
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Medium4"35Copper37361T12100000247361T122000000
    Heavy4"50Stainless Steel
    		127361T12400000————0
    Extra Heavy4"50Stainless Steel
    		127361T12300000————0
    back to top