Protective Lens 42x91 mm 5-Pack for 3M Speedglas welding helmets (compatible with 100/10V/SL/9000/9002)

Pack of five clear replacement protective lenses sized 42×91 mm designed for 3M Speedglas welding helmets. These outer cover lenses fit the listed Speedglas models and serve as a sacrificial transparent layer that shields the auto-darkening filter from welding spatter, sparks, and surface scratches. Keeping a set of spare protective lenses on hand helps maintain clear visibility and reduces the need to replace the more expensive internal filter components.

Advantages

These protective lenses are made to the dimensions required for a snug fit and provide a transparent, low-distortion viewing surface that does not alter the optical performance of the helmet when intact. Supplied in a five-pack, they offer multiple replacements for regular maintenance, help prevent contamination of the auto-darkening unit, and contribute to longer service life of the helmet's optical components.

Suitable for

• Routine replacement of outer cover lenses on compatible 3M Speedglas welding helmets
• Work environments with frequent spatter, grinding, or abrasive contaminants
• Welding shops, fabrication, maintenance, and training where visibility and filter protection are needed

Key specifications

• Lens dimensions: 42 × 91 mm (width × height)
• Pack quantity: 5 protective outer lenses
• Material: clear protective plastic designed for optical clarity and impact resistance
• Compatibility: designed to fit the specified range of 3M Speedglas helmet front assemblies

How to use

To replace the outer protective lens, remove the helmet cover assembly according to the helmet manufacturer’s instructions, withdraw the damaged or soiled lens, and insert a new 42×91 mm lens ensuring it sits flush and secure in the lens frame. Confirm that the lens is clean and free of debris before reassembling the cover so that the auto-darkening filter has an unobstructed, clear view. Replace lenses as soon as they become scratched or contaminated to maintain optimal visibility and protection.

Recommendations

Store spare lenses in a clean, dry place away from direct sunlight and solvents. Inspect lenses before each use and change immediately if visibility is reduced or if the lens shows signs of impact or severe abrasion. Use only compatible protective lenses to ensure proper fit and to avoid interference with the helmet’s optical and safety functions.