Permatex Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker – 9.5 oz PowerBead Can

Overview

Permatex Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker is a fast-curing, sensor-safe sealant designed to stay flexible and durable when faced with demanding powertrain conditions. Its patented adhesion system helps it bond to oily surfaces, reducing the need for pre-formed gaskets in many common sealing jobs while remaining compatible with modern engine materials.

Engineered for today’s vehicles, this gasket maker resists a range of fluids and vibrations that can challenge seals over time. It maintains pliability as components move, helping joints tolerate movement without cracking or losing seal integrity. The result is a seal that can adapt to heat, vibration, and fluid exposure while staying reliable in daily service scenarios.

Key benefits

• Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability
• Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants
• Retains high flexibility and eliminates the need for pre-formed, pre-cut, paper, rubber or cork gaskets; OEM specified and approved for dealership warranty requirements
• Temperature Range -65°F to 500°F intermittent
• Suggested Applications: Valve covers, oil pans, intake manifold end seals, timing covers, and differential covers

What makes it stand out in practice

• Fast-curing action helps get jobs done efficiently in shop or garage settings
• Low-odor formula improves comfort in enclosed workspaces
• Non-corrosive and sensor-friendly, supporting modern engine assemblies

Real-world use cases

From valve covers to differential covers, this gasket maker is designed to seal joints exposed to engine oil, transmission fluid, coolant, and other common shop fluids. Its OEM specification supports dealership warranty requirements, making it a practical choice for both production lines and service bays. The blend is compatible with aluminum, bi-metal components, and high-tech plastics found in newer engines, helping technicians meet evolving material needs without compromising seal performance.

Packaging comes in a 9.5 oz PowerBead can, engineered to deliver a clean, controlled bead that helps maintain consistent seal geometry across different seal surfaces. In daily service, the combination of fast cure, strong adhesion, and durable elasticity can contribute to dependable performance across hotter days and colder starts alike.