Original BOCI Seal Ring for Protective Lens 25.4x4mm

Prevents Contamination & Lens Damage

NOVA LASER brings you Original BOCI Seal Ring that perfectly fits to Bochi Protective Lens 25.4x4mm, it is the factory-original O-ring designed specifically for 25.4mm diameter, 4mm thick laser protective lenses. This critical sealing component prevents dust, smoke, and cutting debris from entering your lens chamber—protecting both your expensive lens and your laser's optical path

Why This Specific Seal Ring Matters:

• Exact BOCI Specification - Matches original equipment dimensions precisely (25.4mm OD, ~4mm thickness)
• High-Temperature Resistant - Withstands intense heat from laser cutting without degrading
• Optical Grade Material - Won't outgas or contaminate the optical path
• Perfect Compression Fit - Ensures complete seal without over-compressing the lens

Protects Your Critical Components:
✓ Lens Protection - Seals out metal dust, smoke, and coolant mist
✓ Optical Integrity - Maintains clear, undistorted laser beam path
✓ Consistent Performance - Prevents focus shifting from contamination
✓ Cost Savings - Extends protective lens life by preventing edge damage

Technical Specifications:

• Part Type: Protective Lens Seal Ring/Gasket
• Compatible Lens: 25.4mm diameter × 4mm thickness (1" × ~0.16")
• Material: High-temperature fluorosilicone or Viton® (specify)
• Temperature Range: -20°C to +250°C (-4°F to +482°F)
• Color: Typically black or translucent brown
• Quantity: Single seal ring (lens not included)

For Use With:

• BOCI Brand Laser Cutting Heads
• 25.4x4mm (1") Standard Protective Lenses
• Most 1" lens holder assemblies
• Replacement during routine lens cleaning/maintenance

When to Replace Your Seal Ring:

• During every lens change/cleaning (recommended)
• Visible cracks, flattening, or brittleness
• Lens contamination despite cleaning
• Poor focus consistency
• After any lens assembly disassembly

Symptoms of Failed Seal Ring:

• Frequent lens contamination (daily cleaning needed)
• Uneven cutting edges
• Focus inconsistency
• Smoke residue on lens edges
• Reduced lens lifespan

Maintenance Tip:
Always replace the seal ring when changing lenses—a seal ring can protect a lens from permanent damage.