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    Lengths - Insulation

    Insulation lengths are available in 2-meter lengths coming in multiple wall thickness options with a core stock of 3/8", 1/2" & 3/4". These are designed for thermal insulation of pipework in HVAC systems. The insulation helps improve energy efficiency and reduce condensation. The two leading brands offered by Smith Brothers are:

    • Kaimann

    • Armacell

    Both brands are known for high-quality elastomeric foam insulation, suitable for commercial and residential air conditioning systems. Other version of insulation such as self-seal can be found with the consumables section on the website HERE.

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    Armacell Class O Armaflex Insulation Unslit

    89x19 EVO Armaflex Insulation Unslit (3 5/8" x 3/4" Wall) (16m per Box)

    ARM089019
    Armaflex Pipe Insulation. 3.1/2in (89mm) Bore x 3/4in (19mm) Wall. Box of 8 (16m) Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    76x19 EVO Armaflex Insulation Unslit (18m per Box)

    ARM076019
    Armaflex Pipe Insulation. 3in (76mm) Bore x 3/4in (19mm) Wall. Box of 9 (18m) Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Picture of 76mm x 13mm Insulation Tube Class O 2m (3"x1/2" Wall) (34 Metres Per Box)

    76mm x 13mm Insulation Tube Class O 2m (3"x1/2" Wall) (34 Metres Per Box)

    KAI076013
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 3in (76mm) Bore x 1/2in (13mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    6x9 EVO Armaflex Insulation Unslit (1/4" x 3/8" Wall) (352m per Box)

    ARM006009
    Armaflex Pipe Insulation. 1/4in (06mm) Bore x 3/8in (09mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    6x13 EVO Armaflex Insulation Unslit (1/4" x 1/2" Wall) (200m per Box)

    ARM006013
    Armaflex Pipe Insulation. 1/4in (06mm) Bore x 1/2in (13mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Picture of 6mm x 9mm Insulation Tube Class O 2m (1/4"x3/8" Wall) (360 Metres Per Box)

    6mm x 9mm Insulation Tube Class O 2m (1/4"x3/8" Wall) (360 Metres Per Box)

    KAI006009
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1/4in (6mm) Bore x 3/8in (9mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 6mm x 13mm Insulation Tube Class O 2m (1/4"x1/2" Wall) (240 Metres Per Box)

    6mm x 13mm Insulation Tube Class O 2m (1/4"x1/2" Wall) (240 Metres Per Box)

    KAI006013
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1/4in (6mm) Bore x 1/2in (13mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    67x19 EVO Armaflex Insulation Unslit (2 5/8" x 3/4" Wall) (20m per Box)

    ARM067019
    Armaflex Pipe Insulation. 2.5/8in (67mm) Bore x 3/4in (19mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    67x13 EVO Armaflex Insulation Unslit (2 5/8" x 1/2" Wall) (34m per Box)

    ARM067013
    Armaflex Pipe Insulation. 2.5/8in (67mm) Bore x 1/2in (13mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    60x25 EVO Armaflex Insulation Unslit (2 3/8" x 1" Wall) (18m per Box)

    ARM060025
    Armaflex Pipe Insulation. 2.3/8in (60mm) Bore x 1in (25mm) Wall. Box of 9 (18m) Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    60x19 EVO Armaflex Insulation Unslit (2 3/8" x 3/4" Wall) (24m per Box)

    ARM060019
    Armaflex Pipe Insulation. 2.3/8in (60mm) Bore x 3/4in (19mm) Wall. Box of 12 (24m) Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: Out of Stock
    Armacell Class O Armaflex Insulation Unslit

    60x13 EVO Armaflex Insulation Unslit (2 3/8" x 1/2" Wall) (32m per Box)

    ARM060013
    Armaflex Pipe Insulation. 2.3/8in (60mm) Bore x 1/2in (13mm) Wall. Box of 18 (36m) Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    54x9 EVO Armaflex Insulation Unslit (2 1/8" x 3/8" Wall) (52m per Box)

    ARM054009
    Armaflex Pipe Insulation. 2.1/8in (54mm) Bore x 3/8in (09mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    54x25 EVO Armaflex Insulation Unslit (2 1/8" x 1" Wall) (18m per Box)

    ARM054025
    Armaflex Pipe Insulation. 2.1/8in (54mm) Bore x 1in (25mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    54x19 EVO Armaflex Insulation Unslit (2 1/8" x 3/4" Wall) (24m per Box)

    ARM054019
    Armaflex Pipe Insulation. 2.1/8in (54mm) Bore x 3/4in (19mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    54x13 EVO Armaflex Insulation Unslit (2 1/8" x 1/2" Wall) (38m per Box)

    ARM054013
    Armaflex Pipe Insulation. 2.1/8in (54mm) Bore x 1/2in (13mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Picture of 54mm x 9mm Insulation Tube Class O 2m (2 1/8"x3/8" Wall) (60 Metres Per Box)

    54mm x 9mm Insulation Tube Class O 2m (2 1/8"x3/8" Wall) (60 Metres Per Box)

    KAI054009
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 2-1/8in (54mm) Bore x 3/8in (9mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: Out of Stock
    Picture of 54mm x 25mm Insulation Tube Class O 2m (2 1/8"x1" Wall) (22 Metres Per Box)

    54mm x 25mm Insulation Tube Class O 2m (2 1/8"x1" Wall) (22 Metres Per Box)

    KAI054025
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 2-1/8in (54mm) Bore x 1in (25mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 54mm x 19mm Insulation Tube Class O 2m (2 1/8"x3/4" Wall)(30 Metres Per Box)

    54mm x 19mm Insulation Tube Class O 2m (2 1/8"x3/4" Wall)(30 Metres Per Box)

    KAI054019
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 2-1/8in (54mm) Bore x 3/4in (19mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 54mm x 13mm Insulation Tube Class O 2m (2 1/8"x1/2" Wall) (46 Metres Per Box)

    54mm x 13mm Insulation Tube Class O 2m (2 1/8"x1/2" Wall) (46 Metres Per Box)

    KAI054013
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 2-1/8in (54mm) Bore x 1/2in (13mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    48x19 EVO Armaflex Insulation Unslit (28m per Box)

    ARM048019
    Armaflex Pipe Insulation. 1.7/8in (48mm) Bore x 3/4in (19mm) Wall. Box of 15 (30m) Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: Out of Stock
    Armacell Class O Armaflex Insulation Unslit

    42x9 EVO Armaflex Insulation Unslit (1 5/8" x 3/8" Wall) (64m per Box)

    ARM042009
    Armaflex Pipe Insulation. 1.5/8in (42mm) Bore x 3/8in (09mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    42x25 EVO Armaflex Insulation Unslit (1 5/8" x 1" Wall) (42m per Box)

    ARM042025
    Armaflex Pipe Insulation. 1.5/8in (42mm) Bore x 1in (25mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: Out of Stock
    Armacell Class O Armaflex Insulation Unslit

    42x19 EVO Armaflex Insulation Unslit (1 5/8" x 3/4" Wall) (32m per Box)

    ARM042019
    Armaflex Pipe Insulation. 1.5/8in (42mm) Bore x 3/4in (19mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    42x13 EVO Armaflex Insulation Unslit (1 5/8" x 1/2" Wall) (50m per Box)

    ARM042013
    Armaflex Pipe Insulation. 1.5/8in (42mm) Bore x 1/2in (13mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Picture of 42mm x 9mm Insulation Tube Class O 2m (1 5/8"x3/8" Wall (70 Metres Per Box)

    42mm x 9mm Insulation Tube Class O 2m (1 5/8"x3/8" Wall (70 Metres Per Box)

    KAI042009
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-5/8in (42mm) Bore x 3/8in (9mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 42mm x 25mm Insulation Tube Class O 2m (1 5/8"x1" Wall) (24 Metres Per Box)

    42mm x 25mm Insulation Tube Class O 2m (1 5/8"x1" Wall) (24 Metres Per Box)

    KAI042025
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-5/8in (42mm) Bore x 1in (25mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 42mm x 19mm Insulation Tube Class O 2m (1 5/8"x3/4" Wall) (40 Metres Per Box)

    42mm x 19mm Insulation Tube Class O 2m (1 5/8"x3/4" Wall) (40 Metres Per Box)

    KAI042019
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-5/8in (42mm) Bore x 3/4in (19mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 42mm x 13mm Insulation Tube Class O 2m (1 5/8"x1/2" Wall) (56 Metres Per Box)

    42mm x 13mm Insulation Tube Class O 2m (1 5/8"x1/2" Wall) (56 Metres Per Box)

    KAI042013
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-5/8in (42mm) Bore x 1/2in (13mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    35x9 EVO Armaflex Insulation Unslit (1 3/8" x 3/8" Wall) (76m per Box)

    ARM035009
    Armaflex Pipe Insulation. 1.3/8in (35mm) Bore x 3/8in (09mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    35x25 EVO Armaflex Insulation Unslit (1 3/8" x 1" Wall) (24m per Box)

    ARM035025
    Armaflex Pipe Insulation. 1.3/8in (35mm) Bore x 1in (25mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    35x19 EVO Armaflex Insulation Unslit (13/8" x 3/4" Wall) (36m per Box)

    ARM035019
    Armaflex Pipe Insulation. 1.3/8in (35mm) Bore x 3/4in (19mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    35x13 EVO Armaflex Insulation Unslit (1 3/8" x 1/2" Wall) (60m per Box)

    ARM035013
    Armaflex Pipe Insulation. 1.3/8in (35mm) Bore x 1/2in (13mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Picture of 35mm x 9mm Insulation Tube Class O 2m (1 3/8"x3/8" Wall) (92 Metres Per Box)

    35mm x 9mm Insulation Tube Class O 2m (1 3/8"x3/8" Wall) (92 Metres Per Box)

    KAI035009
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-3/8in (35mm) Bore x 3/8in (9mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 35mm x 25mm Insulation Tube Class O 2m (1 3/8"x1" Wall) (32 Metres Per Box)

    35mm x 25mm Insulation Tube Class O 2m (1 3/8"x1" Wall) (32 Metres Per Box)

    KAI035025
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-3/8in (35mm) Bore x 1in (25mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: Out of Stock
    Picture of 35mm x 19mm Insulation Tube Class O 2m (1 3/8"x3/4" Wall) (48 Metres Per Box)

    35mm x 19mm Insulation Tube Class O 2m (1 3/8"x3/4" Wall) (48 Metres Per Box)

    KAI035019
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-3/8in (35mm) Bore x 3/4in (19mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Picture of 35mm x 13mm Insulation Tube Class O 2m (1 3/8"x1/2" Wall) (76 Metres Per Box)

    35mm x 13mm Insulation Tube Class O 2m (1 3/8"x1/2" Wall) (76 Metres Per Box)

    KAI035013
    Kaimann Kaiflex ST High Performance Class O Pipe Insulation. Excellent fire resistance and thermal efficiency. 1-3/8in (35mm) Bore x 1/2in (13mm) Wall. (Price Per Metre - Sold in 2m Lengths) - Black
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    28x9 EVO Armaflex Insulation Unslit (11/8" x 3/8" Wall) (98m per Box)

    ARM028009
    Armaflex Pipe Insulation. 1.1/8in (28mm) Bore x 3/8in (09mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    28x25 EVO Armaflex Insulation Unslit (11/8" x 1" Wall) (36m per Box)

    ARM028025
    Armaflex Pipe Insulation. 1.1/8in (28mm) Bore x 1in (25mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
    Armacell Class O Armaflex Insulation Unslit

    28x19 EVO Armaflex Insulation Unslit (11/8" x 3/4" Wall) (48m per Box)

    ARM028019
    Armaflex Pipe Insulation. 1.1/8in (28mm) Bore x 3/4in (19mm) Wall. Black unslit flexible nitrile rubber insulation that offers reliable protection against condensation and effectively preventing energy loss. Suitable for use on hot and cold water services, chilled water lines, heating systems, air conditioning ductwork, refrigerated pipework, process and industrial pipework and equipment. (Price Per Metre - Sold in 2m Lengths)
    Status: In Stock
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