Ceramic Paper Ring Gasket

Ceramic Paper Ring Gasket

4" 150# Ring Gasket 1/8" Ceramic Paper
Product Code: SGI-550-0442

Ceramic Paper Ring Gaskets are made from LyTherm® Rollboard paper, which is a lightweight refractory material processed from a blend of high purity alumina-silica fibers into a highly flexible, uniform insulation media. It is recommended for continuous use at temperatures up to 2300°F (1260°C). 

LyTherm® Rollboard is a utility grade paper that has low shrinkage, good handling strength, and low thermal conductivity. It contains a small amount of organic binder for processing, which makes it flexible, yet reduces off gassing and odor during use. It’s flexibility allows it to be wrapped or rolled to fit most complex configurations.

This gasket is available in Ring and Full Face shape.

  • Excellent corrosion resistance
  • Good dielectric strength
  • High fired tensile strength
  • Good flame resistance
  • Easy to cut, wrap, or form
  • Temperature stability
  • Resilient
  • Thermal Shock resistant
  • Low thermal conductivity
  • Low heat storage
  • Light Weight
  • High heat reflectance

 Physical Properties    Chemical Properties %    Tensile Strength lb/in (kg/25mm)    Apparent Thermal Conductivity
Melting Point, °F (°C)  3200 (1760)    Al2 O3  47.00   Machine Direction Tensile  9.92 (4.43)   Mean Temperature, °F (°C) Thermal Conductivity BTU in/hr ft2 °F (W/mK)
Use Limit, °F (°C)  2300 (1260)    SiO2  52.62   Cross Direction Tensile  8.81 (3.94)   75 (167)  0.300 (0.043)
LOI, %  6    Na2 O  0.18          177 (350)  0.390 (0.056)
Density, lb/ft3(kg/m3 )  10 (160)    Fe2 O3  0.03         260 (500)  0.468 (0.068)
Dielectric Strength, V/mil  50    Others  0.17          343 (650)  0.548 (0.079)
Mullen Burst, psi N/A                  

Material Safety Data Sheet

Lydall - LyTherm Refractory Media.pdf

Technical Data Sheet

Lydall - Lytherm Rollboard Paper.pdf