Internal Welding Mask Lens Cover No name MAS PRZ2013 500s/g 102.5×42 mm

Internal replacement part for welding helmets: the No name MAS PRZ2013 inner mask lens cover (marked 500s/g) measures 102.5×42 mm and is designed as a quick-change protective insert for the helmet's internal viewport. It protects the internal lens from welding spatter, scratches and dust, helping to maintain clear visibility and prolong the service life of the helmet's optical components. The part is intended for maintenance or repair of compatible welding masks where the internal protective cover matches these dimensions.

Advantages

This inner lens cover is compact and lightweight, allowing for rapid replacement without tools on compatible helmets. It provides a single-purpose shield that reduces the need to replace the whole optical assembly after contamination or damage, lowering maintenance costs. The 102.5×42 mm size and marked 500s/g specification make it easy to verify fit and compatibility with internal viewports designed for quick-change inserts.

Suitable for

• Maintenance and repair of compatible welding helmets
• Workshops and fabrication shops where frequent lens protection replacement is required
• Keeping internal viewports clear during MIG, TIG and stick welding where spatter and debris occur

Key specifications

• Type: internal mask lens cover for welding helmets
• Material: durable protective plastic (transparent protective insert)
• Dimensions: 102.5 × 42 mm
• Marked designation: 500s/g
• Mounting: quick-change insert for compatible internal viewports

How to use

Remove the helmet's outer cover if required and access the internal viewport according to the helmet manufacturer's guidance. Fit the 102.5×42 mm lens cover into the internal slot or holder, ensuring the edges align and the cover seats securely to prevent movement during use. Replace the cover whenever visibility is reduced by spatter, scratches or fogging. Dispose of worn covers and install new inserts to maintain clear optical performance.

Usage recommendations

Verify compatibility with your welding helmet model before purchase by checking internal viewport dimensions and mounting type. Store spare covers in a clean, dry place to avoid surface contamination prior to installation. Replace the cover as soon as visibility is compromised to ensure safe and effective welding operations.