G5-02 Helmet Parts FAQs
Spare plates, lenses, headbands and shells for an auto-darkening welding helmet, and how to work out which ones your helmet needs.
My filter will not darken or flickers. Which part is the fault?
Work through the simple causes first. Manuals commonly list a wrong shade or function setting, dirty sensors or solar cells, a weak or flat battery, a low sensitivity setting for low-current work, and a spattered or pitted front cover plate. Wipe the sensors with a lint-free cloth, check the settings, check or replace the battery, then fit a fresh cover plate if the old one is marked.
If the filter still does not darken reliably, stop welding with it straight away and refer to the maker or your supplier. Never carry on welding with a filter you cannot trust: arc eye, a painful injury to the front of the eye that usually shows a few hours after welding, can follow exposure to the arc.
My helmet has taken a hard knock. Can I just replace the shell?
If a helmet has had a severe impact, follow the maker's instructions, which commonly say to replace the whole helmet. Damage to the shell and headgear is not always easy to see, so a helmet that looks sound after a hard knock may no longer protect as intended. A visibly cracked or broken shell should be replaced in any case.
If you do fit a replacement shell, use the part made for your helmet, because the shell holds the filter. Check the impact marking in the manual, and do not reuse a damaged shell or headgear even if it still looks usable. Welding helmets are not designed to protect against severe impact hazards, so check what your manual says.
Do replacement helmet parts have to meet any standards?
The HSE says eye protection for welders, including the filters that prevent arc eye, should conform to the relevant British and European standards. Older helmets and filters are marked to the older European standards for eye protection, welding protectors and auto-darkening filters. A newer international standard series is replacing these for new certification, and one part of it covers welding, so newer parts may carry different markings. Look for the markings given in your helmet's user instructions and keep them intact.
For a replacement filter, plate or shell, choose parts the helmet maker lists for your helmet, and follow your risk assessment. Do not drill, modify or mix parts in a way the maker does not allow, as that can invalidate the protection.
When should I replace the outer protection plate?
Maker manuals say to replace a cracked, scratched or pitted outer plate, and one warns that a heavily spattered cover can affect how the sensors work. Clean it first with a lint-free cloth; if you still cannot see clearly, or the surface is pitted by spatter, change it.
There is no single hour or weld count that suits everybody, because it depends on the process, the amount of spatter and how often you weld. Always keep the outer plate fitted, as it protects the filter surface from spark and spatter. Keep a few spares so you can swap one as soon as it clouds.