Permatex Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker, 13 oz, Sensor-Safe, Vibration-Resistant

Permatex Ultra Grey 82195 is a rigid, high-torque RTV silicone gasket maker engineered to resist vibration, oils, and shop fluids for reliable, long-lasting seals in demanding engine applications.

This 13 oz cartridge of Permatex Ultra Grey Rigid High-Torque RTV is formulated for applications where strong clamping force and engine vibration are common — think import engines and other high-stress components. The compound cures to a durable, non-corrosive gasket that performs across a wide temperature range and is safe for use around sensors. It’s designed to meet OEM-level expectations while offering low odor and straightforward application.

How does this gasket maker handle high torque and engine vibration?

Ultra Grey 82195 cures into a firm, rigid silicone that maintains a tight seal under heavy preload and repeated vibrations. Its compound resists compression set and stays stable where flexible silicone might fail, reducing the chance of leaks in torque-critical joints.

• Rigid-cure formula for high-clamp applications
• Low compression set to preserve sealing under torque
• Engineered for repeated vibration without degradation

Which fluids and temperatures can it withstand?

This gasket maker resists common automotive fluids such as engine oil, coolant, and many shop chemicals, maintaining its integrity over a broad service temperature range. It is rated down to -65°F and up to 500°F intermittently, making it suitable for many engine compartments and exhaust-adjacent areas.

• Resistant to oils, coolant, and typical shop fluids
• Temperature tolerance from -65°F to 500°F (intermittent)
• Non-corrosive formulation that protects metal surfaces

Where should I apply Permatex Ultra Grey 82195 on my vehicle?

The product is intended for places where a rigid, durable seal is required and where torque and vibration are present. It’s ideal for sealing flanges and covers that experience steady pressure and movement, but avoid areas needing flexible gasket material.

• Valve covers and oil pans where clamping loads are high
• Intake manifold end seals and timing covers
• Water pumps and thermostat housings that contact fluids

Is this gasket maker safe for sensors and engine components?

Ultra Grey 82195 is formulated to be sensor-safe and non-corrosive, reducing the risk of damaging sensitive components when applied correctly. Its low odor makes it easier to use in enclosed workspaces while minimizing potential chemical interactions with metal parts.

• Sensor-safe formulation for common engine sensors
• Non-corrosive to prevent damage to metal mating surfaces
• Low-odor formula for more comfortable application

Who is this for: This Permatex Ultra Grey 82195 gasket maker is aimed at professional mechanics, experienced DIYers, and anyone working on import engines or high-torque assemblies that require a rigid, durable seal resistant to fluids and vibration. Choose this product when you need an OEM-specified solution that holds up under torque and thermal stress, especially for valve covers, oil pans, timing covers, and other critical engine seals.