Bursting disc



A bursting disc that provides for thermal pressure equalization below 400 mbar. The disc is securely held in the housing under high pressures using a suspension strut.It opens when the interior defined pressure exceeds and recloses after pressure equalization.

The B26STV is suited for a wall thickness of 3 mm and it is mounted from two sides. The bursting disc has been tested in line with automotive specifications and it is suited for application areas requiring IP6kX, IPX7, etc..


Safety element in exterior areas for lithium ion battery housing.

Standard version

  • Pressure equalization volumes at 70 mbar: > 5 l/h
  • Air volume flow in case of an event: > 90 l/s
  • Overall dimensions: Ø 43 x 8 mm
  • Opening pressure: > 400 mbar
  • Wall thickness: 3 ± 0.1 mm

Special version

  • without pressure equalization (see B26ST)


Use Lithium ion batteries
Nominal dimension Ø 26 mm hole diameter
Mounting direction all directions
Mounting from two sides
Material Steel
Other materials EPDM seal