Putting pressure on the SE400
![](https://www.sea.com.au/wp-content/uploads/2022/08/art_crush_01.jpg)
How tough is your respirator?
Recently, SEA engineers decided to see how much pressure the SE400 respirator could cope with. So they parked a car on it.
![](https://www.sea.com.au/wp-content/uploads/2022/08/art_crush_02.jpg)
The pressure is on
Roll up! Roll up!
![](https://www.sea.com.au/wp-content/uploads/2022/08/art_crush_03.jpg)
Passed the test
Even with our heavyweight engineers gracing the bonnet, the SE400 fan unit coped very well with true positive pressure.