CRC Red RTV Gasket 340 Blister Tube 85g

CRC Red RTV Gasket 340 in a convenient 85g blister tube delivers heavy‑duty, high‑temperature gasket‑making power. This self‑forming silicone gasket maker replaces almost any cut gasket—from felt and cork to paper and rubber—with no gasket sealers required.

Key advantages include an intermittent service temperature up to 340°C, fast, room‑temperature vulcanising action, and the ability to form to any size or shape in minutes. The pure silicone rubber stays flexible and durable, resisting migration from thermal cycling, cracking, shrinking, and vibration so seals endure harsher conditions without failing.

What it’s great for

• High‑temperature, high‑pressure applications in automotive and general machinery
• Sealing complex or irregular gasket cavities where stock gaskets don’t fit
• Repairs where time is of the essence—form a gasket on the spot instead of waiting for the right size

Ideal for these components

• Valve rocker covers
• Timing chain covers
• Thermostat housings
• Transmission pans
• Side cover plates, water outlet/inlet
• Water pump covers
• Intake manifolds, oil pan corners
• Differential covers

Important usage notes

• Not recommended for copper or brass surfaces
• Not suitable as a head gasket, and should not be used on stove pipes or in fireplaces

How to use

• Prepare mating surfaces by cleaning, drying, and removing old gasket material
• Apply an even bead or press‑formed gasket to the appropriate surface; the material will self‑seal to match any gap
• Assemble components and secure as usual—the gasket material will form a complete seal during operation

Packaging features a compact 85g blister tube, making CRC Red RTV Gasket 340 a practical addition to any toolbox or workshop. For DIY enthusiasts and professional technicians alike, this gasket‑making silicone streamlines repairs, reduces downtime, and delivers reliable, heat‑resistant seals across a wide range of automotive and machinery applications.