Are Gas Springs Safe? Risks & Handling | Newtone

Safety Guide — Gas Springs & Struts

Are Gas Springs Safe to Use?

A straight answer for OEM engineers, maintenance teams and procurement — where gas springs are completely safe, where the real hazards actually live, and how to handle, lock and dispose of them correctly.

Two Failure Modes Explained

Honest Handling & Disposal

When You Need a Locking Spring

Manufacturer Engineering Support

Are gas springs safe to use? In normal use, yes — a correctly specified, correctly installed gas spring is a sealed, factory-tested device that needs no user maintenance and poses no real hazard while it simply opens and holds a panel. The important nuance is that a gas spring stores energy as pressurised nitrogen, so the genuine risks aren’t in everyday operation at all. They sit in a few specific moments: removing a strut, cutting or drilling it, heating it, or disposing of it carelessly. Understand that split and the whole safety picture becomes simple. This distinction is where the confusion comes from. People see a video of a strut being cut open and decide the part is dangerous to live with, when in fact it had spent years quietly holding a tailgate without a second thought. The danger appeared only when someone breached a pressure vessel. Below we separate the two clearly, explain the two ways a gas spring actually fails, and give the handling rules that matter — from a manufacturer that has supplied these parts for over two decades.

The Two Ways a Gas Spring Fails — and Which One Is Dangerous

A gas spring fails in one of two ways, and they are not equally serious. Knowing which is which is the core of using them safely. Here’s the part most guides skip: the single riskiest moment is removal. A strut that looks and feels normal can be damaged internally, and the act of taking it off — often by hand, with the worker right next to it — can be what triggers a sudden release. Industry safety authorities have recorded serious injuries and even a fatality during gas-strut removal, not during ordinary use. So treat removal as the deliberate, careful step it is: relieve the load first, keep clear of the rod’s line of travel, wear eye protection, and follow the manufacturer’s removal procedure rather than levering a stuck unit off.

Are Gas Springs Safe in Normal Use? Why a Good One Is

In everyday operation, a quality gas spring is safe because everything hazardous about it is contained and controlled. The force is set to a tested value within a tight tolerance, the nitrogen and oil are fully sealed behind seals chosen for the environment, and the unit is cycle-rated so it won’t quietly degrade for years. A spring rated for 100,000 cycles and used a dozen times a day lasts decades on cycle count alone — well over 27 years before cycling alone wears it out (100,000 ÷ 12 ÷ 365 ≈ 22–28 years). Premature trouble is almost always a specification or installation issue, not the spring being inherently unsafe. Sound installation is part of that safety. Mount the spring rod-down in the closed position so the oil keeps the seals lubricated; keep both pivots in the same plane so the rod isn’t side-loaded, since lateral load shortens life; fit the right mounting brackets with a little angular freedom; make sure end fittings are fully screwed home; and design in mechanical stops so the spring is never forced past its rated extension or compression. None of these are exotic — they’re the standard practice that keeps a safe part safe.

How Much Energy Is Actually Inside? The Physics

The force a gas spring holds comes from pressure acting on the cross-section of the rod — that’s the whole mechanism, and it’s why the body is a pressure vessel you don’t breach casually. Two things follow from this. First, the everyday force is real but modest — a few hundred Newtons, comparable to a firm shove, which is why a healthy strut is perfectly safe to operate. Second, that pressure is held behind a seal and a closed cylinder, and if you drill or cut into the cylinder while it’s charged, the same energy escapes through the hole you just made — as a jet of high-pressure oil, or by driving the rod out. The number isn’t frightening; what you do to the cylinder is what matters.

Are Gas Springs Safe to Cut, Drill, or Dispose Of?

Not while charged — and this is where most real incidents happen. A pressurised gas spring should never be pierced, cut, machined, welded near, heated, or thrown into a fire. Each of those can breach the cylinder and release the energy uncontrolled. A few specific don’ts worth stating plainly:

• Don’t pierce, cut, or grind a charged unit. The body is a sealed pressure vessel; opening it releases oil and gas, and can launch the rod.
• Don’t heat it or expose it to fire. Heat raises the internal pressure and can cause it to burst — which is why struts must be kept clear of welding and burning vehicles.
• Don’t grip, scratch, paint, or solvent-clean the rod. Any damage to the rod surface ruins the seal and starts a leak.
• Don’t try to refill a spent strut. Recharging under pressure with worn seals or a weakened casing is genuinely dangerous; replacement is cheaper and safe.
• Don’t bin or incinerate old units. They must be depressurised by the correct procedure before scrapping, then the metal recycled.

For disposal, the principle is simple: the unit must be safely depressurised before any cutting, using the manufacturer’s specified method and proper eye and ear protection, or handed to a recycling scheme set up for pressurised components. We don’t recommend improvising this. If you’re retiring units in quantity, talk to us and we’ll point you to the correct procedure for the exact model.

When Safety Means a Locking Gas Spring

Whenever a person can be underneath a held load, a standard spring isn’t the right safety choice — a locking gas spring is. A locking or safety-shroud unit holds mechanically at full extension and won’t let the panel creep down or drop if the spring loses pressure or someone knocks it. Service hatches, equipment covers, and maintenance access panels are the classic cases. For a lid that nobody ever works beneath, a standard spring is fine; the locking version is specifically for hands-free, hold-open safety where a falling panel would hurt someone. We saw exactly why this matters with a customer whose machinery access hatch occasionally drifted down onto technicians’ hands during servicing — the spring was sound, but a hatch held only by gas pressure will always come down eventually if it’s nudged or the charge dips. We moved them to a locking gas spring that holds positively at full open until the operator releases it. The maintenance complaints stopped immediately. Where people put their hands under a load, mechanical hold beats trust in pressure every time.

Standard Gas Springs vs High-Energy Nitrogen Cylinders

One honest clarification, because it drives a lot of the fear online: the dramatic “rod ejected across the factory” warnings generally refer to high-energy nitrogen gas cylinders used in press tools and dies, which store far more energy than the gas springs that lift a hood, hatch, or cabinet. A standard lift-support gas spring operates at a few hundred Newtons; a press-tool nitrogen cylinder is a different class of component at much higher pressure and force. Both deserve correct handling, but conflating them makes ordinary lid struts sound more dangerous than they are. If you’re specifying for lift support, you’re in the safer, lower-energy category — handled correctly, entirely routine. Please review our gas spring range.

Frequently Asked Questions

Conclusion

Gas springs are safe to use — that’s the honest answer, with one condition: respect what’s inside them. In ordinary service they’re sealed, tested, and undramatic, holding a panel for years without incident. The energy they store only becomes a hazard when the cylinder is breached or a damaged unit is removed or scrapped carelessly. So the rule of thumb is short: use them freely; don’t cut, drill, heat, or burn them; remove them deliberately and clear of the rod’s path; choose a locking spring wherever someone works under the load; and depressurise correctly before disposal. If you want help choosing the right spring — including a locking version for a safety-critical hold, or the correct way to retire old units — send us the application. We’ll advise, and recommend the right part, typically within 5 business hours.

Specify a Safe Gas Spring

Tell us the application and where people stand relative to the load. We’ll recommend a standard or locking spring, with safe-handling and disposal guidance for your exact model.

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