Prevents Contamination & Protects Your Laser Lens
NOVA LASER offers the Original BOCI Seal Ring, precisely designed to fit BOCI 25.4x4mm protective lenses. This factory-original O-ring is engineered specifically for 25.4mm diameter and 4mm thickness laser protective lenses. It acts as a critical sealing component that prevents dust, fumes, and cutting debris from entering the lens chamber—safeguarding both your valuable lens and the laser’s optical pathway.
Exact BOCI Dimensions – Manufactured to original 25.4mm OD and ~4mm thickness specifications
High-Temperature Durability – Withstands extreme laser cutting heat without deformation
Optical-Safe Material – No outgassing or contamination within the optical path
Precision Compression Fit – Provides a secure seal without applying excess pressure on the lens
✓ Lens Protection – Blocks metal dust, smoke, and coolant mist
✓ Optical Clarity – Maintains a clean and stable laser beam path
✓ Stable Performance – Prevents focus variation caused by contamination
✓ Cost Efficiency – Extends lens lifespan and reduces replacement frequency
Part Type: Protective Lens Seal Ring / Gasket
Compatible Lens Size: 25.4mm Diameter × 4mm Thickness (1″ × ~0.16″)
Material: High-temperature Fluorosilicone or Viton® (as specified)
Temperature Range: -20°C to +250°C (-4°F to +482°F)
Color: Black or Translucent Brown
Package Includes: 1 Seal Ring (Protective lens not included)
BOCI Laser Cutting Heads
25.4x4mm (1″) Standard Protective Lenses
Most 1″ Lens Holder Assemblies
Routine maintenance and lens replacement procedures
During every lens replacement or cleaning (recommended)
If cracks, flattening, or brittleness are visible
When lens contamination persists
If focus consistency declines
After disassembling the lens assembly
Frequent lens contamination
Uneven cutting results
Focus inconsistency
Smoke residue around lens edges
Reduced protective lens lifespan
Note: Returns are accepted only if the item is damaged or physically altered at the time of delivery.
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