Chemraz® 678

Chemical Processing, Energy, Industrial Operations

Chemraz® 678 compound (90 durometer) expands the portfolio of low-temperature perfluoroelastomers and maintains excellent sealing integrity at high pressures and in temperatures as low as -40°F (-40°C). In addition, Chemraz® 678 has excellent RGD (Rapid Gas Decompression) properties as verified by an independent third-party lab. Chemraz® 678 delivers the same exceptional chemical resistance as our other market-leading compounds along with a wide temperature range of -40°F to 445°F (-40°C to 230°C). This material also provides excellent compression set and thermal shock resistance, allowing our seals to be used in a wide variety of industry applications. The material also allows for greater flexibility in tooling due to a comparable shrink rate with our other high-performance sealing solutions.

Features & Benefits

Excellent RGD resistance reduces the risk of costly seal failure, loss of production time, and environmental damage
Exceptional performance in extreme low temperatures to enable applications in harsh environments
Superior resistance to hostile reservoir chemistries, drilling fluid additives, and production chemicals for improved sealing performance
Excellent compression set and thermal shock resistance for expanded application capabilities

Applications

O-rings, CGTTM rings, ACGTLTM rings, and other sealing elements used in:

Wireline sensors and other fluid-filled tools stored and used in arctic climates and subzero applications
Subsea equipment including production systems, hydraulic systems, and chemical injection systems
Completions systems used in water injection wells
Drilling tools used in deepwater applications

Configurations

Wireline tools
High pressure applications
Subsea
Downhole
Downhole drilling tools
Completion tools

Temperature Range

–54°C to 232°C (–65°F to 450°F)

For applications facing extreme temperatures, high pressures, or uniquely challenging operating conditions, our global engineering team delivers fully custom‑engineered solutions. Because every critical environment is different, these designs are developed in close collaboration with you—let’s discuss your requirements to build the right solution.

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