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Exclusive SS/5800 Series Fitment: Tailored specifically as a direct replacement sealing gasket matching Signal-Stat (SS) 5800 series lamp assemblies (including direct interchange fitment for companion lighting parts such as LIT5800AA).
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Maximum Environmental Shield: Engineered to lock out external road grit, grime, moisture, and road salt spray, protecting the electrical integrity of your lighting.
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Premium Industrial Rubber Construction: Molded from heavy-duty, high-elasticity black rubber built for long-term compression recovery and excellent resistance to weathering.
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Rapid Tool-Free Sealing: Features a circular elastomeric design that slides smoothly over the lamp base layout, forming an instantaneous, tight, and rattle-free seal.
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Excellent Fleet Cross-References: Drop-in cross-reference replacement part for leading industry numbers, including NAPA (9120 / LIT 9120) and Alternative SKU (SS9120-S).
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1-Year Manufacturer Warranty: Backed by Truck-Lite's trusted 1-Year limited warranty against defects in materials and craftsmanship.
Truck-Lite 9120 – Signal-Stat 4.36 in. Round Black Rubber Sealing O-Ring for SS/5800 Series Lamps
Protect your commercial lighting system and eliminate unexpected electrical failures with the heavy-duty Truck-Lite 9120 Signal-Stat Black Rubber Sealing O-Ring. Specifically engineered to original equipment (OE) manufacturing standards, this premium replacement round gasket provides an absolute, pressurized barrier that safeguards your vehicle's critical signaling assemblies against the elements.
Lighting enclosures are constantly exposed to brutal road environments. The Truck-Lite 9120 is molded from high-grade, premium industrial rubber formulated to resist drying, cracking, and dry-rot under intense thermal shifts. Its precision-engineered round profile creates a tight, resilient seal over your lamp housing, locking out moisture, pressurized fleet washes, road salt, mud, and wind-driven dust. By ensuring that internal bulb sockets, electronic pigtails, and wire connections remain entirely bone-dry, this simple O-ring actively prevents corrosion and voltage shorts. This tool-free, direct-fit solution makes routine maintenance easy for fleet mechanics and owner-operators alike, minimizing vehicle shop downtime and keeping your rig legally operating on long-haul highway routes.