About Technetics Group ORIGRAF®Graphite Pressure Seals
Unlike other seals, the graphite flexibility of ORIGRAF®graphite pressure seals can avoid the influence of surface defects, even in offloading conditions. Unlike flexible graphite cut gaskets, the compression of our ORIGRAF®die-formed seal is limited by a mechanical stop, such as a groove or inner or outer ring. The design prevents excessive seating stress on the seal during transients when assemblies are subject to extreme pressure or temperature.
Product Features
Excellent elastic recovery, capable of reaching 40% compression recovery/spring back effect
- Low creep and relaxation
- Good resistance to radiation(适合核应用程序)chemicals
- Adaptable to extreme thermal and pressure changes
- Excellent resistanceto radial motion
- Metal to metal contact
- Not vulnerable to asymmetric tighteningor torqueing bolts of assembly
- Does not bond to the contact surfaces, so can be easily removed
Industries and Applications
- Nuclear
- Chemical
- Petrochemical
- Aerospace
- Life sciences
- Oil & gas
- For use in a wide variety of applications including:
- Alkylation units
- Steam equipment
- Heat exchangers/heaters
- Piping connection flanges
- Corrosive circuits
- Critical flange applications
- Boilers manways
- Applications with fire safe requirements
Properties and Technical Information
- Extreme Temperature and Pressure Performance
- Pressure: up to 400 bar (5,802 PSI)
- Temperature: from -321°F to 4532°F (-196°C to 2500°C)
- Standard Sizes
DN (mm) 15 to 600 – NPS (in) ½” to 24″ and CLASS (lbs.) 150 to 2500 – PN (bar) 20 to 420 *.
- Certifications.
The ORIGRAF®seal is PMUC certified by EDF (No. PMUC 17-0174) and BAM.
- ORIGRAF®ON 002 Gaskets
这些垫片设计适应flat surfaced flanges (type FF) or raised flanges (type RF) and single insertion (type SE), following flange standards NF-EN 1092-1 and NF-EN 1759-1 (ASME/ANSI B16-5).