CNC Stamped Stainless Steel 316 Marine Navigation Light Housing with IP67 Rated Seal Design for COLREGS Compliance

Navigation lights on vessels are regulatory equipment, not decorative elements. COLREGS (International Regulations for Preventing Collisions at Sea) specifies the color, intensity, arc, and visibility range requirements. If the housing fails and water infiltrates your navigation light, you become non-compliant and invisible at night in shipping channels.

Most marine catalog navigation light housings are either injection-molded plastic (suitable for weekend vessels but questionable for bluewater use) or die-cast aluminum with powder coating (better, but coatings chip at mounting points, leading to galvanic corrosion). CNC-stamped or machined 316 housings are the specification for vessels that remain in water year-round.

The housing performs three critical functions: holding the lens, sealing the lamp socket from water intrusion, and providing a mounting interface to the vessel structure. Achieving all three requires precise attention to gasket groove dimensions, lens retention mechanisms, and mounting bolt patterns. The gasket groove is particularly critical - too shallow and the O-ring dislodges during installation; too deep and insufficient compression compromises the seal. Proper groove width and depth maintain 15-25% O-ring compression for reliable IP67 sealing.

We stamp these housings from 316 sheet because the geometry is fundamentally a formed shell with features, not a solid machined block. Stamping provides superior grain structure alignment for formed walls and offers cost-effectiveness at volume. Critical features - gasket grooves, mounting holes, lens retention features - are CNC-machined after forming to maintain tolerances that stamping alone cannot achieve.

• Material: 316 stainless sheet (1.0-2.0mm), certified per ASTM A240 with full traceability
• Gasket Groove Precision: CNC machined groove with +/-0.05mm dimensional control for reliable O-ring sealing
• Water Protection: IP67 rated seal design - verified with pressure testing on first article
• Formed Shell Quality: Stamped shell walls free of wrinkles, thinning, or cracks at bend radii
• Mounting Accuracy: CNC-punched mounting holes with +/-0.1mm positional tolerance for straightforward field installation
• Surface Treatment: Passivated exterior, electropolish optional for maximum corrosion resistance and easy cleaning

• Running Lights: Port (red), starboard (green), and stern (white) light housings for COLREGS compliance
• Masthead Lights: All-round white light housings for sailing vessels under power
• Anchor Lights: Forward-facing all-round light housings for vessels at anchor
• Deck Flood Lights: Waterproof housing for work lights, searchlights, and deck illumination
• Strobe & Distress: Navigational beacon and distress signal housings for commercial and SOLAS vessels
• Underwater Lights: Submersible housings for underwater illumination with high IP rating

• Seal Design Experience: We understand O-ring groove dimensions for IP67 - verified through pressure testing on multiple housing designs
• Hybrid Manufacturing: Stamped shell for cost efficiency at volume, CNC machined features for precision where it matters
• COLREGS Familiarity: We recognize that navigation light housings are regulatory equipment - lens angle, light output, and mounting position all matter
• No Thin Spots in Formed Walls: Our stamping process monitors material thinning at bend radii, adjusting die radius and pressure if walls drop below 80% of original thickness
• Marine-Specific Finish: Passivation is standard on marine 316 stainless - we never ship un-passivated stainless for marine service

1. Design Review: We verify housing design for gasket groove dimensions, lens retention mechanism clearances, and wall thickness at formed corners
2. Sheet Preparation: 316 stainless sheet verified for surface quality and thickness tolerance, edge trimmed to blank size
3. Stamping & Forming: Progressive stamping for shell profile, press forming for 3D features with bend radii maintained at minimum 2x material thickness
4. CNC Machining: Gasket groove, mounting holes, lens retention features machined after forming for positional accuracy
5. Passivation: ASTM A967 passivation to restore chromium oxide layer damaged during forming and machining
6. Inspection & Packaging: Dimensional verification, O-ring groove gauge check, surface inspection for forming defects, individual carton packaging with foam inserts