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4mm Silicone Air Line

Premium 4 mm internal diameter silicone air line for aquaculture, aquaponics and aquarium systems. Silicone stays soft and resists the hardening and cracking that affects ordinary PVC airline, and the clear wall lets you check airflow at a glance. Supplied in 100 m and 200 m rolls.

Price range: $50.00 through $75.00 ex GST

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4mm Silicone Air Line
4mm Silicone Air Line - Image 2

Product Information

Key Features

  • Single 4 mm ID bore, sized for standard air pumps, air taps, diffusers and flow control devices
  • Silicone stays soft and pliable — it resists the hardening and cracking that stiffens ordinary PVC airline
  • Non-toxic composition, safe around fish, plants and other aquatic organisms
  • Clear wall lets you see airflow and spot blockages without breaking the line
  • Cuts cleanly to length and grips standard 4 mm barbs for leak-free joints
  • Supplied in 100 m and 200 m rolls only — sold by the roll, not the metre
  • Outside diameter, working pressure and temperature range are not published — ask us before using it for anything beyond low-pressure air
  • Sizing — match the ID to the barb or fitting on your equipment, then check the working pressure rating covers your pump discharge.

Specifications

SKUID (mm)OD (mm)Working pressureTemperature rangeMaterialSupply
AL054Not publishedNot publishedNot publishedNon-toxic silicone100 m roll
AL064Not publishedNot publishedNot publishedNon-toxic silicone200 m roll

Frequently Asked Questions

How do I choose the right size?
This line is made in one bore only — 4 mm ID — so check the barb on your air pump, air tap or diffuser is 4 mm before ordering; the outside diameter is not published, so ask us if clearance is tight.
Is it sold per metre or per roll?
Per roll only — 100 m or 200 m. It is not cut to the metre.
Is it suitable for ozone or pure oxygen?
No. Ozone attacks silicone and no oxygen service rating is published — use Tygon Ozone Tubing for ozone and Mako Red Multipurpose Oxygen Hose for oxygen.
Is it food-grade or potable rated?
No food-grade or potable rating is published. The copy states only that the silicone is non-toxic and safe for aquatic life.
Will it survive outdoors in the sun?
Silicone handles UV and weathering better than PVC airline, but no outdoor or temperature rating is published for this product, so shade long exposed runs.
Why use silicone instead of ordinary PVC airline?
Silicone stays flexible for years in wet, warm conditions, where PVC airline hardens, cracks and starts to leak at the barbs.
What working pressure will it take?
A working pressure is not published. It is intended for low-pressure aeration air only — contact us before any other duty.

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