Our Product Range   »  Ducting Supplies  »  FLEXAUST Flex-Lok 300 NPB


Product code

Product Description

This FLEXAUST Flex-Lok 300 NPB duct hose is a low temperature welding exhaust hose.

It is a single-ply, black neoprene coated, polyester fabric hose mechanically crimped in a continuous process.

Features include:

  • Fabric is locked around a coated steel wire by a metal strip formed into a clip
  • Metal strip acts as a wearstrip and offers outstanding external abrasion resistance
  • Extremely flexible & compressible
  • Manufactured with flame retardant materials
  • Ideal for low temperature fume control applications
  • Available with a non-marking thermoplastic rubber clip cover to protect the helix & the equipment that is attached to the hose (Flex-Lok® 300W)
  • Standard Min. Inside Diameter = 4″, consult sales team for pricing & minimums on smaller sizes
  • Standard Max. Inside Diameter = 18″, consult sales team for pricing & minimums on larger sizes
  • Negative pressure fan system with ambient air inlet recommended to maximize effectiveness and life of duct


Product Specs

Material: Coated Fabric
Inside Diameter:  Min: 3″ Max: 20″
Temperature:  Low: -65° High: 300°F
Length:  25′


Market Applications

Garage Exhaust, Smoke Ejectors, Welding Fume Extraction

See also the Market Application Guide HERE


Product Applications:

Fume SymbolThis product is suitable for use with Fumes.



For more information about selecting the right product for use, view the Product Selection Guide HERE

For a quote or more information on FLEXAUST Flex-Lok 300 NPB ducting click here:   Quote or Query

For sizing information on this product see  the attached PDF

downloads section


Technical data based on 2 ft. straight lengths of hose @ 72°F

This is an American product so measurements may be in Imperial and not Metric, please check you make the correct conversions.

FLEXAUST Flex-Lok 300 NPB Tech Data