Helmet Spares FAQs
Straight answers to the questions people ask most when choosing and replacing spare parts for welding helmets.
What are cover lenses and how often should I replace them?
Cover lenses (also called protection plates or outer lenses) are clear sacrificial plates that sit in front of the filter and take spatter, sparks and scratches. The inner lens sits behind the filter and protects it from the inside. Between them they protect the more delicate filter.
Replace the outer lens when it is pitted, scratched, dirty or distorting your view. How often depends on the process and amount of spatter: heavy MIG or stick welding or grinding may need it changed many times a shift, light TIG much less often. Always fit the right type.
Can I use replacement parts that are not from the helmet maker?
Sometimes compatible parts fit, but you need to be careful. Parts supplied for a helmet by its maker are designed and tested for it, while other parts can differ in fit, optical quality and protection.
A poorly fitting lens or cover can let in light, spatter or radiation, and fitting parts the maker does not approve may affect the approval of the helmet. Check the manual for your own helmet to see which parts it allows, and make sure any replacement is stated to suit your model and to meet the same protection requirements.
How do I know when an auto-darkening filter needs replacing?
Signs of trouble include the filter failing to darken, darkening slowly, flickering or showing uneven shading or dark patches. A cracked or scratched filter, or one with spots in the display, should also be replaced.
First check the simple causes: a dirty or spattered cover lens, a flat or badly fitted battery, a sensor blocked by dirt, and the wrong setting. If a filter still misbehaves, stop using it, because a filter that does not darken can cause serious eye damage. Do not try to repair filters yourself.
When should I replace the headband and sweatband?
Replace the headband when the adjustment ratchet slips, the plastic is cracked or the helmet no longer sits firmly on your head. A helmet that wobbles or tips forward is tiring and may move at the wrong moment.
Sweatbands soak up sweat and dirt, then harden and become unhygienic, so replace them regularly, especially in hot conditions. Many are sold in packs. A fresh headband and sweatband can make an old helmet feel like new.