Flexible sheath

The flexible sheaths that leave our workshops meet the quality criteria that have made SPIRAGAINE’s reputation. From the simple flexible sheath to be connected, to the sheaths handled daily, we make you benefit from our know-how and our expertise for an optimal experience.

Flexible air duct

Insulated sheath

Smoke extraction duct

Ventilation duct

PCA Hoses

Bulk loading sheath

Hot air generator sheath

ATEX sheath

Air conditioning duct

Blowing duct

Technical description

Our knowledge :
thermo-welded or sewn sheath, insulated or not, with embedded spring.
We have different materials : Hypalon®, Neoprene®, PVC, Nitrile, Polyurethane, Silicone, Natural rubber… allowing us to meet the requirements of pressure, depression, temperature, chemical aggression, (see chemical resistance table).

Numerous possible finishes: enlarged or reduced cuff, suspension bracket, wear strip, storage bag, connection solution, grounding braid.

Fields of application

  • Sheaths used in:
  • industrial ventilation,
  • air conditioning,
  • heating and air-conditioning, suction and discharge of air loaded with dust, smoke, fumes…
  • Fluid passage (powder and powdery)

Technical specifications

Product with a great robustness. Able to meet technical constraints such as: abrasion, temperature, pressure or depression, chemical aggression, ATEX compliance.

Diameter : 50 mm to 1600 mm
Length : Up to 40 m (diameter and specific length on request)
Temperature : -70 °C to +1 000 °C


  • Fire (M0, M1, M2)
  • Smoke (F0, F1…)
  • Food (FDA, European food directive 1935/2004 of October 27, 2004)
  • NBC
  • ATEX (zone 0, 1, 2 et 20, 21, 22)

You have a project ?
Specification ?

We adapt to your technical constraints to
create a product that meets your needs.