A breakthrough in both heat and chemical resistance, Thermiculite Critical Service materials are rated for temperatures up to 1800º F and have passed the API 607 fire test. Available in spiral wound and Flexpro™ (Kammprofile) facing styles, they provide safer, more cost-effective alternatives to industrial sealing problems where ultra-high heat resistance is critical; ex: oxidation of graphite in nuclear power exhaust systems. They are suitable for replacing aramid, glass, and carbon fiber; PTFE; and graphite gaskets in a number of industrial applications.
Material / Use
Additional Details

Thermiculite 815 Sheet

  • High temperature sheet reinforced with a 0.004˝, 316 stainless steel tanged core. Provides total freedom from oxidation. Chemical compatibility exceeds graphite. Fire safe with proven global trackrecord.
  • Max Temperature: 1800°F (982°C)
  • Max Pressure: 2900 psig (200 bar) (Class 150–300)
  • ASME m: 2.0
  • ASME y: 2500 psi (17 MPa)

Thermiculite 835 Spiral Wound

  • High temperature filler material for spiral wound gaskets
  • Cryogenics to 1800ºF / 982ºC
  • Class 150 to 2500

Thermiculite 845 Flexpro™ Kammprofile

  • High temperature facing material for kammprofile gaskets
  • Cryogenics to 1800ºF/982ºC
  • Class 150 to 2500

Thermiculite 715 Fiber Sheet

  • Manufactured with non oxidizing fiber with a higher required seating stress, ensuring good load bearing properties. It facilitates proper installation by maintaining flexibilty. Non-contaminating, good chemical resistance and fire safe.
  • Max Temperature: 850°F (454°C)
  • Max Pressure: 2030 psig (140 bar)
  • ASME m: 3.2
  • ASME y: 4200 psi (29 MPa)

Thermiculite 894 Static Seal

  • Typical uses:
  • Flexible static seal, ON/OFF
  • valves with low actuation.
  • Max Temperature: 1900°F (1050°C)
  • pH Limits: 0-14

For further specifications please call (201) 635-1910