Permatex Ultra Red RTV Silicone Gasket Maker

Superior High-Temperature Performance

Permatex’s Ultra Red is a high-performance low-odor formulation, outperforming the previous generation Red RTV. This advanced compound formula ensures high adhesion and high temperature sealing up to 650°F (343°C), while remaining resistant to oils and common shop fluids.

Key Features:

Temperature resistance up to 650°F (343°C)
Sensor-safe, non-corrosive RTV silicone
OEM specified gasket maker meeting performance specs of OE silicone gaskets
High resistance to thermal cycling
Low-odor formulation
Replaces almost any cut gasket
Resistant to auto and shop fluids

Applications:

Exhaust manifold and header flanges
Turbo flanges
Slip-fit exhaust joints
EGR valves
Heat riser tube flanges
Forms reliable gaskets that resist cracking, shrinking and migrating
Can be used to coat pre-cut gaskets to increase reliability

Important Notes:

Not recommended for use on head gaskets or parts in contact with gasoline
Allow 24 hours to fully cure before filling with fluids or returning to service
Temperature range: -65°F to 650°F (-54°C to 343°C) intermittent