J-B Weld 32327 3oz Ultimate Grey RTV Silicone Gasket Maker & Sealant

J-B Weld 32327 3oz Ultimate Grey RTV Silicone Gasket Maker & Sealant – World’s Strongest Bond

Built for higher clamp loads and closely spaced bolt patterns, J-B Weld Ultimate Grey is a 100% RTV silicone gasket maker & sealant that maintains a tough, waterproof seal where standard silicones can fail. From the package, it’s designed for high-torque load applications, is oil resistant, sensor safe, and low odor—ideal around modern engine management systems. Ultimate Grey lays a smooth bead, skins in about 1 hour, and cures to a durable gray seal that won’t shrink or crack. It withstands intermittent temperatures up to 700°F and excellent dependability up to 500°F, making it a dependable choice for intake manifolds, transmission pans, oil pans, timing gear covers, cam/valve covers, and other import and domestic applications. The included tapered nozzle helps you place an even 1/8″ bead for clean assembly.

J-B Weld 3oz Ultimate Grey RTV Silicone Gasket Maker & Sealant At a Glance

• High-Torque Ready: Formulated for assemblies with higher clamping loads.
• Oil Resistant & Waterproof: Holds up around engines and driveline components.
• Sensor Safe, Low Odor: Suitable near O2 sensors and modern emissions equipment.
• 700°F Intermittent: Handles under-hood heat and thermal cycling.
• Skins in ~1 Hour: Keeps jobs moving during reassembly.
• Non-Shrinking Seal: Cures to a tough, flexible gray gasket.
• Precise Application: Tapered nozzle for controlled 1/8″ beads.
• Made in USA: Consistent shop-grade performance.

Markets

• Automotive Repair & Performance: Engine sealing on import and domestic vehicles.
• Heavy Truck & Fleet Maintenance: Pan and cover sealing with fast turnaround.
• Powersports & Motorcycles: Compact covers and cases that see vibration and heat.
• Small Engine & Equipment Service: Generators, mowers, pumps, and compressors.
• Marine Service (Engine Bay): Above-waterline engine and drivetrain sealing.
• Municipal & Public Works Garages: Daily service on mixed vehicle fleets.
• Trade Schools & Technical Programs: Teaches correct RTV silicone sealing technique.

Technicians choose Ultimate Grey when a gray RTV silicone must tolerate clamp load, heat, and oil while staying serviceable. The bead tools easily, skins in about an hour, and cures to a flexible gasket that resists leaks on oil pan, timing cover, and intake manifold joints. Being sensor safe avoids contamination issues on O2 and other sensors, and the 700°F intermittent rating covers under-hood hot spots. For shops handling varied platforms—from passenger cars to light equipment—this gasket maker offers reliable sealing without special primers or separate paper gaskets, reducing rework and keeping vehicles moving.

J-B Weld 32327 3oz Ultimate Grey RTV Silicone Gasket Maker & Sealant Features

• 100% RTV Silicone: Forms a durable, waterproof gasket.
• High-Torque Load Formula: Resists extrusion and blowout on tight bolt patterns.
• Oil & Weather Resistant: Stands up to petroleum products and weathering.
• Sensor Safe & Low Odor: Suitable near emissions and engine sensors.
• Temperature Resistant: Up to 700°F intermittent.
• Won’t Shrink or Crack: Flexible seal for long-term reliability.
• Made in the USA: Consistent manufacturing quality.

J-B Weld 32327 3oz Ultimate Grey RTV Silicone Gasket Maker & Sealant Includes

• (1) 3 oz (85 g) tube of Ultimate Grey RTV Silicone
• (1) Tapered application nozzle

J-B Weld 32327 3oz Ultimate Grey RTV Silicone Gasket Maker & Sealant Specifications

• Volume: 3 oz (85 g)
• Type: RTV silicone gasket maker & sealant
• Color (Cure): Grey
• Set / Skin Time: ~1 hour
• Full Cure: ~24 hours (typical)
• Temperature Rating: Up to 700°F intermittent
• Chemical Resistance: Oil and petroleum products
• Typical Automotive Uses: (6+) Intake manifolds; Transmission pans; Oil pans; Timing gear covers; Cam/valve covers; General import vehicle sealing
• Substrates: Metal (machined flanges)
• UPC: 043425323279
• Country of Origin: USA

Why Customers Select the J-B Weld 3oz Ultimate Grey RTV Silicone Gasket Maker & Sealant

Shops reach for Ultimate Grey RTV silicone when a gasket maker must handle high-torque loads and oil exposure without leaking. It lays an even bead, skins in about an hour, and cures to a flexible grey RTV seal that won’t shrink or crack. On intake manifold corners, timing cover joints, and oil pan gasket surfaces, the sensor-safe formula avoids issues with O2 and other sensors. With 700°F intermittent temperature resistance and dependable adhesion to clean metal flanges, crews get repeatable results on daily service work from cars and trucks to small equipment—without callbacks.