Pyro-Bloc Y™ & Y2™ Modules (2400ºF – 2600ºF Range)

  • Monolithic, edge-grained ceramic fiber module
  • Available in uncompressecell nameensities from 8-15 pcf
  • One-shot center-fired stud
  • Extremely fast, efficient installation
  • High density fiber resists mechanical abuse

The modules are manufactured from a high purity blend of raw materials which are used to produce R Grade (alumina-silica), ZR Grade (alumina-zirconia-silica). and C Grade (alumina-silica-chromia) ceramic fibers. The modules utilize a specially designed 316 stainless steel internal support system and industry standard Pyro-Bloc stud system. In addition, it has no hot face, cold face, or side constrictions which permit maximum module to module compression during installation. The modules use the proven center-fire, one-step weld system which eliminates the need for pre-layed out stud patterns.

Pyro-Bloc® Y™ Modules
R Grade, ZR Grade, C Grade

The Pyro-Bloc Y Module is an edge-grained ceramic fiber block used for lining Industrial furnaces. The Y Module comes complete with internal support system and stud already in place.

  • 12″ x 12″ modules
  • 12″ x 24″ dual modules
  • 6″ x 12″ split long fiber modules
  • 12″ x 6″ split short fiber modules
  • Module thickness from 3″ lo 12″ in 1″ increments

Pyro-Bloc® Y2™ Modules
R Grade, ZR Grade

The Pyro-Bloc Y2 (Y-squared 16″ x 16″) Module is a larger format edge-grained ceramic fiber block used for lining industrial furnaces. The 16″ square size offers up to 78% more installed square feet per module than 12″ x 12″ modules. In addition, the 16″ square size is much easier to handle when compared to 24″ x 24″ modules.

  • 16″ x 16″ modules (1.78 sf per module)
  • Module thickness from 3″ to 12″ in 1″ increments


Thermal Conductivity at 500ºF (260ºC)0.49 BTU-in/hr-ft²-ºF at 15 pcf
0.50 BTU-in/hr-ft²-ºF at 12 pcf
0.52 BTU-in/hr-ft²-ºF at 10 pcf
0.53 BTU-in/hr-ft²-ºF at 8 pcf
Thermal Conductivity at 1000ºF (540ºC)0.84 BTU-in/hr-ft²-ºF at 15 pcf
0.96 BTU-in/hr-ft²-ºF at 12 pcf
1.04 BTU-in/hr-ft²-ºF at 10 pcf
1.13 BTU-in/hr-ft²-ºF at 8 pcf
Thermal Conductivity at 1500ºF (816ºC)1.43 BTU-in/hr-ft²-ºF at 15 pcf
1.66 BTU-in/hr-ft²-ºF at 12 pcf
1.81 BTU-in/hr-ft²-ºF at 10 pcf
1.97 BTU-in/hr-ft²-ºF at 8 pcf
Thickness ( in )3 to 12
Melting Point ( ºF )3200
Thermal Conductivity at 2000ºF (1093ºC)2.19 BTU-in/hr-ft²-ºF at 15 pcf
2.45 BTU-in/hr-ft²-ºF at 12 pcf
2.69 BTU-in/hr-ft²-ºF at 10 pcf
2.95 BTU-in/hr-ft²-ºF at 8 pcf


Independent test results on the strength of the Pyro-Bloc stud are available upon request.

Typical Applications

  • Annealing furnaces
  • Heat treating furnaces
  • Process heaters
  • Reformers
  • Ethylene furnaces
  • Forge furnaces
  • Steam flood units
  • Homogenizing furnaces
  • Incinerators


Modules are installed by the instant action of our industry standard Pyro-Bloc stud and stud gun. In oncell nameasy Step the module is positioned against the furnace shell, securely welded independent test results on the strength of the Pyro-Bloc stud are available upon request, and tightened into place in less than three seconds. This unique process self checks and quality tests each and every weld for absolute integrity. The Pyro-Bloc modules installation procedure eliminates the need for a time consuming stud layout and prewelding of anchors or brackets. Modules are easy to cut and fit in the field for special shape requirements.

Product Variations

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