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E1FL5012 4 1/4 x 2 (108mm x 50mm) Lens. Shade 12
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    Rapid Ref : E1FL5012  

    4 1/4" x 2" (108mm x 50mm) Lens. Shade 12
    E1FL5012

    £0.30  EX VAT
    SSP Suggested Selling Price = £0.63  YOU SAVE £0.33

    4 1/4" x 2" Shade 12 Lens

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    108mm X 50mm Lenses FAQs

    Practical answers on choosing, fitting and looking after the small-format shaded, cover and back lenses used in many fixed-shade helmets.

    My lens is marked to an old standard. Can I still use it?icon-minus-redicon-plus-red

    Older lenses often carry markings from standards that have since been replaced. The current standard series for welding eye and face protectors is EN ISO 16321, with Part 2 covering welding.

    An old marking does not by itself mean a lens is unsafe, but you should be able to read the shade clearly and the lens must be undamaged. Check the shade is correct for your work, and ask the maker or your supplier if you want to know whether a lens meets current requirements.

    Is a helmet lens enough protection when I am chipping slag or grinding?icon-minus-redicon-plus-red

    No. The filter lens is there to cut down arc radiation. Eye injuries commonly come from slag, grinding and chipping, so eye protection is recommended even after the arc has stopped. Goggles are also advised when chipping slag or wire-brushing welds.

    Flip the helmet up for these jobs only if you are wearing suitable impact-resistant eye protection with side protection underneath. Never grind with just a tinted weld lens in front of you unless the maker's instructions and your risk assessment say it is suitable.

    Why do some lenses for gas work look different from arc lenses?icon-minus-redicon-plus-red

    Oxy-fuel flames can give off a strong yellow light. During gas welding or cutting where the torch produces a high yellow light, it is desirable to use a filter lens that absorbs the yellow (sodium) part of the spectrum.

    So a lens made for gas work may be tinted differently from one meant for arc work, even at a similar shade number. Check what the lens is intended for, use the shade the chart gives for your gas process and plate thickness, and follow the maker's instructions.

    How often should I replace the front cover lens?icon-minus-redicon-plus-red

    Replace it as soon as it is cracked, scratched, pitted or covered in spatter to the point that it affects your view. Makers' manuals generally describe the cover lens as a sacrificial layer that protects the filter behind it, so it is the part you will change most often.

    How quickly it wears depends on how much spatter and grinding dust your work produces. Keep spares to hand, and do not weld without the cover in place, because spatter can pit and crack the shaded filter, which is harder to replace.

    See all 6 questions for this category

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