McMaster-Carr logo
    Filter by
    System of Measurement
    Maximum Temperature
    Minimum Temperature
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Connector Material
    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)
    64 Products

    Round Belts

    Made of polyurethane, these belts resist chemicals and abrasion. Also known as O-ring and endless belts, they come ready to use.
    1/16" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    4" to 12"Polyurethane Rubber
    		-10 to 150Clear3044K50100000
    12 1/4" to 15 3/4"Polyurethane Rubber
    		-10 to 150Clear3044K6010000
    3/32" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    4" to 12"Polyurethane Rubber
    		-10 to 150Clear3044K50200000
    12 1/4" to 24"Polyurethane Rubber
    		-10 to 150Clear3044K6020000
    1/8" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    4" to 12"Polyurethane Rubber
    		-10 to 150Clear3044K50300000
    12 1/4" to 24"Polyurethane Rubber
    		-10 to 150Clear3044K6030000
    24 1/4" to 36"Polyurethane Rubber
    		-10 to 150Clear3044K7030000
    36 1/4" to 48"Polyurethane Rubber
    		-10 to 150Clear3044K8030000
    60"Polyurethane Rubber
    		-10 to 150Clear3044K8850000
    5/32" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    5 3/4" to 12"Polyurethane Rubber
    		-10 to 150Clear3044K50400000
    12 1/4" to 24"Polyurethane Rubber
    		-10 to 150Clear3044K6040000
    3/16" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    5 3/4" to 12"Polyurethane Rubber
    		-10 to 150Clear3044K50500000
    12 1/4" to 24"Polyurethane Rubber
    		-10 to 150Clear3044K6050000
    24 1/4" to 36"Polyurethane Rubber
    		-10 to 150Clear3044K7050000
    60"Polyurethane Rubber
    		-10 to 150Clear1835T34700000
    1/4" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    5 3/4" to 12"Polyurethane Rubber
    		-10 to 150Clear3044K506000000
    12 1/4" to 24"Polyurethane Rubber
    		-10 to 150Clear3044K6060000
    24 1/4" to 36"Polyurethane Rubber
    		-10 to 150Clear3044K7060000
    36 1/4" to 48"Polyurethane Rubber
    		-10 to 150Clear3044K80600000
    60"Polyurethane Rubber
    		-10 to 150Clear1835T64800000
    5/16" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    24 1/4" to 36"Polyurethane Rubber
    		-10 to 150Clear3044K707000000
    3/8" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    12 1/4" to 24"Polyurethane Rubber
    		-10 to 150Clear3044K608000000
    24 1/4" to 36"Polyurethane Rubber
    		-10 to 150Clear3044K70800000
    1/2" Diameter
    Image of Product. Front orientation. Contains Annotated. Round Belts. Round Belts, Clear.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Clear

    Outer

    Circumference

    Choose an Outer
    Circumference
    Material
    Temp. Range,
    ° F
    Color
    Each
    48"Polyurethane Rubber
    		-10 to 150Clear5904T253000000
    49" to 60"Polyurethane Rubber
    		-10 to 150Clear3044K90900000

    Round Belting

    Image of Product. Front orientation. Round Belts. Round Belting.
    This belting has a smooth, easy-to-clean surface. Good for light duty conveying and power-transmission applications, it is chemical and abrasion resistant and creates stronger connections than hollow-core belting. Join the ends with round belt connectors (sold separately) or use a welding kit.
    Belts
    Connectors
    Dia.
    For Min.
    Pulley Dia.
    Material
    Color
    Per
    Ft.
    Each
    3/32"3/4"Polyurethane Rubber
    		Clear59725K72800000———0
    1/8"1"Polyurethane Rubber
    		Clear59725K7290000———0
    3/16"1 1/2"Polyurethane Rubber
    		Clear59725K73100006180K12000000
    1/4"2"Polyurethane Rubber
    		Clear59725K73200006180K1400000
    5/16"2 1/2"Polyurethane Rubber
    		Clear59725K73300006180K1500000
    3/8"3"Polyurethane Rubber
    		Clear59725K73400006180K1600000
    1/2"4"Polyurethane Rubber
    		Clear59725K7350000———0

    Chemical-Resistant Made-to-Order Round Belts

    Image of Product. Front orientation. Contains Annotated. Round Belts. Chemical-Resistant Made-to-Order Round Belts.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Outer

    Circumference

    In addition to chemical resistance, these belts also provide increased abrasion resistance over heavy duty round belts. Also known as O-ring and endless belts, they come ready to use.
    Dia.
    Choose an Outer
    Circumference
    For Min.
    Pulley Dia.
    Material
    Color
    Per
    Inch
    3/32"4" to 1,200"3/4"Polyurethane Rubber
    		Clear9462T5400000
    1/8"4 1/2" to 1,200"1"Polyurethane Rubber
    		Clear9462T550000
    3/16"6" to 1,200"1 1/2"Polyurethane Rubber
    		Clear9462T560000
    1/4"8" to 1,200"2"Polyurethane Rubber
    		Clear9462T570000
    5/16"10" to 1,200"2 1/2"Polyurethane Rubber
    		Clear9462T580000
    3/8"11" to 1,200"3"Polyurethane Rubber
    		Clear9462T590000
    1/2"15" to 1,200"4"Polyurethane Rubber
    		Clear9462T610000

    Quick-Connect Hollow-Core Round Belting

    Image of Product. Front orientation. Round Belts. Quick-Connect Hollow-Core Round Belting.
    The hollow core of this polyurethane belting allows you to join the ends without trimming, welding, or using special tools. Good for light duty conveying and power-transmission applications, it is chemical and abrasion resistant. Join the ends with quick-connect hollow-core round belting connectors (sold separately).
    Clear
    Dia.
    Material
    For Min.
    Pulley Dia.
    Per
    Ft.
    3/16"Polyurethane Rubber
    		1 1/2"6567K100000
    1/4"Polyurethane Rubber
    		2"6567K20000
    5/16"Polyurethane Rubber
    		2 1/2"6567K30000
    3/8"Polyurethane Rubber
    		3"6567K40000
    1/2"Polyurethane Rubber
    		4"6567K50000
    5/8"Polyurethane Rubber
    		5"6567K600000
    Connectors
    Image of Product. Front orientation. Round Belt Connectors. Quick-Connect Hollow-Core Round Belting, Aluminum Connector.
    Image of Product. Front orientation. Round Belt Connectors. Quick-Connect Hollow-Core Round Belting, Plastic Connector.

    Aluminum

    Connector

    Plastic

    Connector

    Aluminum Connector
    Plastic Connector
    For Belt Dia.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    3/16"256567K26000000————0
    1/4", 6 mm256567K2200000256567K65000000
    5/16", 8 mm256567K2300000256567K6900000
    3/8", 7/16", 10 mm206567K2400000206567K6600000
    1/2"106567K2500000106567K6700000
    5/8"106567K2800000————0

    Quick-Hook Twisted Round Belts

    Image of Product. Front orientation. Round Belts. Quick-Hook Twisted Round Belts.
    Image of Attribute. Outer Circumference. Front orientation. Contains Annotated.

    Outer

    Circumference

    Install these belts without dismantling your drive shafts—hook the ends together with the attached stainless steel connector.
    Clear
    Dia.
    Choose an Outer
    Circumference
    Material
    Connector Material
    Each
    3/16"5 1/4" to 13 1/4"Polyurethane Rubber
    		302 Stainless Steel
    		9285K6300000
    3/16"13 1/2" to 22 1/4"Polyurethane Rubber
    		302 Stainless Steel
    		9285K640000
    Accessories and Replacements for Round Belts
    Installer Kit—Installer kits include a holding tool to keep one end of the belt in place, a gripping retriever to loop the belt around your pulley, and a hooked tool for pulling the belt loop over the connector.
    Optional Plastic Connector—Optional plastic connectors can be used instead of the included stainless steel connector.
    Each
    Installer Kit1966K1000000
    Replacement 302 Stainless Steel Connector9285K610000
    Optional Plastic Connector9285K620000
    back to top