What is a Rigidizer?

A rigidizer is manufactured and used to increase the surface hardness of ceramic fiber products, such as boards and blankets. This coating compound forms a protective ridgid surface and improves resistance to erosion. Our office two variations depending on your application need and operating temperature.

Colloidal Silica Rigidizer – is a clear low viscosity liquid with a 40% suspension of fine amorphous, nonporous, and spherical silica particles in a caustic aqueous liquid phase stabilized with Na. This rigidizer is used to increase the surface hardness of ceramic fiber products up to 2600℉ (1427℃).

Colloidal Alumina Rigidizer – is a clear low viscosity liquid with a 15% suspension of fine spherical alumina particles in an acidic aqueous liquid phase stabilized by chloride. This rigidizer is used to increase the surface hardness of ceramic fiber products up to 3000℉ (1650℃).

Please note both products have a shelf life of six months if sealed and covered. Do not allow product to freeze.

Benefits

  • Increases surface hardness of ceramic products.
  • Easily applied by brushing, rolling, dipping, or spraying.
  • Reflects heat and thermal shock resistant.
  • Bond composites and laminates.
  • Increases resistance to erosion of high velocity gases.

Colloidal Silica & Alumina Rigidizer from CeraMaterials

Applications

  • Surface coating for ceramic products exposed to high velocity gases or flame impingement.
  • Adhesive for use in making composites and laminates.
  • Adhesive for ceramic blanket and paper.
  • Catalytic converter mat protection.
  • Surface treatment for vacuum formed shapes to increase surface hardness.
  • Veneering Modules over Refractory.
  • Attaching Boards to Furnace Shell.

Useful Charts

Colloidal Silica Rigidizer

Color Clear
Consistency Slightly Viscous liquid
Consistency 1.3
Particle Size (nm) Average
Silica (wt%) 40
Na2O (wt%) 0.50
pH @ 25℃ 10.4
Viscosity @ 25℃ (cp) 15
Toxicity Non-toxic
Packaging 1 gal.
5 gal.
55 gal.

Colloidal Alumina Rigidizer

Color White
Consistency Liquid
Concentration (wt%) 30
pH (20% sol) 3.5 - 4.5
Average Particle Size (nm) 100
Specific Gravity 1.23
Stabilizing Ion Nitrate 0.33%

Rigidizer Info & Pricing

Rigidizer Size Price
Colloidal Silica
2600℉ | 1427℃		 Gallon $50.00
5 Gallon $200.00
Colloidal Alumina
3000℉ | 1650℃
 Gallon $75.00
5 Gallon $325.00
Need a different size? Contact us for a quote.

Ready to order?

If you have any additional questions or need a custom quote our team is always available to help.

What is RCF Coating Cement?

RCF Coating Cement is a fiberboard coating and cement that is manufactured from colloidal silica and mixed with a ceramic fiber power and thickening agent. The coating cement has a temperature rating of 2300℉ (1260℃). The consistency of the cement makes it very versatile and permits differing applications.

Benefits

  • Resists wetting by many nonferrous molten metals.
  • Erosion resistance and good adhesion to most materials.
  • Dielectric strength and thermal reflectance
  • Easy and versatile application via brushing, dipping, or spraying.

RCF Coating Cement

Applications

  • Surface coating for molten aluminum contact.
  • Oxidation-resistant coatings for injection tubes and graphite crucibles.
  • Flame resistant coatings.
  • Patching refractory Joints & Cracks.
  • Hardware protection for ceramic fiber furnace linings.
  • Patching for burner blocks and vacuum formed Ceramic Fiber parts.
  • Radiant coating for a variety of substrates.
  • Electrical insulation coatings and potting.

Useful Charts

RCF Coating Cement Properties

Properties Units Values
Color White
Temperature Grade ℉ 2300
Recommended Operating Temperature ℉ 2150
Percent Solids % 50-60
Wet density lbs/ft³ 80-90
Dry density lbs/ft³ 45-55
Normal layer thickness Inches 0.010"
Approx. coverage SF/Gal 50-100
Mean Coefficient of Expansion in/in ℉ 3.0 x 10-6
LOI % 4-5
Typical Shrinkage %
24hrs		 < 5
@2000
Approx Dielectric Strength Volts/Mil 39
MOR
Dry (typical)		 PSI 400
Molten Aluminum Wetting Resistance Good

Refractory Cement Info & Pricing

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If you have any additional questions, or need a custom quote our team is always available to help.

  • RCF Coating Cement from CeraMaterials

    RCF Coating Cement

    $40.00 – $500.00 Select options

What is Refractory Mortar?

Refractory Mortar is an excellent solution for bonding brickwork into a solid unit and is rated to a temperature of 3000℉ (1649℃). The mortar (wet form) or cement (dry form) permits greater resistance to mechanical stresses, and thermal shocks while providing a cushion between irregular brick surfaces for a firm bearing on each course.

Our office stocks wet air-setting mortar due to its ease of application and rigid set upon air drying. The mortar is specially formulated to have high water retention and was designed for the layering of fire, super duty, and high alumina bricks. If you are interested in a different refractory mortar / cement or need greater bond strength, please contact us for a custom quote.

Benefits

  • Smooth consistency develops a strong brick-to-brick bond
  • Excellent work capability and ease of application.
  • Resistance to the infiltration of air and hot gases
  • Resistant to all types of molten metal applications and destructive chemical attacks.
  • Retards penetration of slag and molten metal into the joints.

Applications

  • Laying and building brick installations for various applications which are subjected to intense heat.

Useful Charts

Refractory Mortar Wet-Air Setting Properties

Properties Values
Temperature Limit 3000 ℉ (1649℃)
≅ lbs to set 1000*
9" x 4.5" x 2.5" Bricks
200-400 lbs
Modulus of Rupture
Mortar
4200 psi
Modulus of Rupture
Dipped Joint, ASTM C 198
375 psi
Linear Shrinkage 4.3 % @ 212℉ (100℃)
Refractoriness
ASTM C 199		 No Flow
@3000 ℉ (1649℃)
Density 126 pcf
Dipping Density
Percent H2O		 124 pcf
4
Chemical Composition (% Wt)
SiO2
Al2O3
Fe2O3
TiO2
CaO
MgO
K2O
Na2O
Misc
lg Loss
48.8
43.2
1.2
1.5
0.3
-
0.8
2.4
-
1.8
Notes: * Quantity depends on thickness of joint and porosity of brick.

Refractory Mortar / Cement Info & Pricing

Mortar / Cement Coverage

Num. of Bricks lbs of Material Avg Pails
1000 400 8
1250 500 10
1500 600 12
1750 700 14
2000 800 16
2250 900 18
2500 1000 20
2750 1100 22
3000 1200 24
3250 1300 26
3500 1400 28
3750 1500 30
4000 1600 32
4250 1700 34
4500 1800 36
4750 1900 38
5000 2000 40
5250 2100 42
5500 2200 44
5750 2300 46
6000 2400 48
6250 2500 50
6500 2600 52
6750 2700 54
7000 2800 56
7250 2900 58
7500 3000 60
7750 3100 62
8000 3200 64
8250 3300 66
8500 3400 68
8750 3500 70
9000 3600 72
9250 3700 74
9500 3800 76
9750 3900 78
10000 4000 80
10250 4100 82
10500 4200 84
10750 4300 86
11000 4400 88
11250 4500 90
11500 4600 92
11750 4700 94
12000 4800 96
12250 4900 98
12500 5000 100
12750 5100 102
13000 5200 104
13250 5300 106
13500 5400 108
13750 5500 110
14000 5600 112
14250 5700 114
14500 5800 116
14750 5900 118
15000 6000 120
15250 6100 122
15500 6200 124
15750 6300 126
16000 6400 128
16250 6500 130
16500 6600 132
16750 6700 134
17000 6800 136
17250 6900 138
17500 7000 140
17750 7100 142
18000 7200 144
18250 7300 146
18500 7400 148
18750 7500 150
19000 7600 152
19250 7700 154
19500 7800 156
19750 7900 158
20000 8000 160
20250 8100 162
20500 8200 164
20750 8300 166
21000 8400 168
21250 8500 170
21500 8600 172
21750 8700 174
22000 8800 176
22250 8900 178
22500 9000 180
22750 9100 182
23000 9200 184
23250 9300 186
23500 9400 188
23750 9500 190
24000 9600 192
24250 9700 194
24500 9800 196
24750 9900 198
25000 10000 200
25250 10100 202
25500 10200 204
25750 10300 206
26000 10400 208
26250 10500 210
26500 10600 212
26750 10700 214
27000 10800 216
27250 10900 218
27500 11000 220
27750 11100 222
28000 11200 224
28250 11300 226
28500 11400 228
28750 11500 230
29000 11600 232
29250 11700 234
29500 11800 236
29750 11900 238
30000 12000 240
30250 12100 242
30500 12200 244
30750 12300 246
31000 12400 248
31250 12500 250
31500 12600 252
31750 12700 254
32000 12800 256
32250 12900 258
32500 13000 260
32750 13100 262
33000 13200 264
33250 13300 266
33500 13400 268
33750 13500 270
34000 13600 272
34250 13700 274
34500 13800 276
34750 13900 278
35000 14000 280
35250 14100 282
35500 14200 284
35750 14300 286
36000 14400 288
36250 14500 290
36500 14600 292
36750 14700 294
37000 14800 296
37250 14900 298
37500 15000 300
37750 15100 302
38000 15200 304
38250 15300 306
38500 15400 308
38750 15500 310
39000 15600 312
39250 15700 314
39500 15800 316
39750 15900 318
40000 16000 320
40250 16100 322
40500 16200 324
40750 16300 326
41000 16400 328
41250 16500 330
41500 16600 332
41750 16700 334
42000 16800 336
42250 16900 338
42500 17000 340
42750 17100 342
43000 17200 344
43250 17300 346
43500 17400 348
43750 17500 350
44000 17600 352
44250 17700 354
44500 17800 356
44750 17900 358
45000 18000 360
45250 18100 362
45500 18200 364
45750 18300 366
46000 18400 368
46250 18500 370
46500 18600 372
46750 18700 374
47000 18800 376
47250 18900 378
47500 19000 380
47750 19100 382
48000 19200 384
48250 19300 386
48500 19400 388
48750 19500 390
49000 19600 392
49250 19700 394
49500 19800 396
49750 19900 398
50000 20000 400
50250 20100 402
50500 20200 404
50750 20300 406
51000 20400 408
51250 20500 410
51500 20600 412
51750 20700 414
52000 20800 416
52250 20900 418
52500 21000 420
52750 21100 422
53000 21200 424
53250 21300 426
53500 21400 428
53750 21500 430
54000 21600 432
54250 21700 434
54500 21800 436
54750 21900 438
55000 22000 440
55250 22100 442
55500 22200 444
55750 22300 446
56000 22400 448
56250 22500 450
56500 22600 452
56750 22700 454
57000 22800 456
57250 22900 458
57500 23000 460
57750 23100 462
58000 23200 464
58250 23300 466
58500 23400 468
58750 23500 470
59000 23600 472
59250 23700 474
59500 23800 476
59750 23900 478
60000 24000 480
60250 24100 482
60500 24200 484
60750 24300 486
61000 24400 488
61250 24500 490
61500 24600 492
61750 24700 494
62000 24800 496
62250 24900 498
62500 25000 500
62750 25100 502
63000 25200 504
63250 25300 506
63500 25400 508
63750 25500 510
64000 25600 512
64250 25700 514
64500 25800 516
64750 25900 518
65000 26000 520
65250 26100 522
65500 26200 524
65750 26300 526
66000 26400 528
66250 26500 530
66500 26600 532
66750 26700 534
67000 26800 536
67250 26900 538
67500 27000 540
67750 27100 542
68000 27200 544
68250 27300 546
68500 27400 548
68750 27500 550
69000 27600 552
69250 27700 554
69500 27800 556
69750 27900 558
70000 28000 560
70250 28100 562
70500 28200 564
70750 28300 566
71000 28400 568
71250 28500 570
71500 28600 572
71750 28700 574
72000 28800 576
72250 28900 578
72500 29000 580
72750 29100 582
73000 29200 584
73250 29300 586
73500 29400 588
73750 29500 590
74000 29600 592
74250 29700 594
74500 29800 596
74750 29900 598
75000 30000 600
75250 30100 602
75500 30200 604
75750 30300 606
76000 30400 608
76250 30500 610
76500 30600 612
76750 30700 614
77000 30800 616
77250 30900 618
77500 31000 620
77750 31100 622
78000 31200 624
78250 31300 626
78500 31400 628
78750 31500 630
79000 31600 632
79250 31700 634
79500 31800 636
79750 31900 638
80000 32000 640
80250 32100 642
80500 32200 644
80750 32300 646
81000 32400 648
81250 32500 650
81500 32600 652
81750 32700 654
82000 32800 656
82250 32900 658
82500 33000 660
82750 33100 662
83000 33200 664
83250 33300 666
83500 33400 668
83750 33500 670
84000 33600 672
84250 33700 674
84500 33800 676
84750 33900 678
85000 34000 680
85250 34100 682
85500 34200 684
85750 34300 686
86000 34400 688
86250 34500 690
86500 34600 692
86750 34700 694
87000 34800 696
87250 34900 698
87500 35000 700
87750 35100 702
88000 35200 704
88250 35300 706
88500 35400 708
88750 35500 710
89000 35600 712
89250 35700 714
89500 35800 716
89750 35900 718
90000 36000 720
90250 36100 722
90500 36200 724
90750 36300 726
91000 36400 728
91250 36500 730
91500 36600 732
91750 36700 734
92000 36800 736
92250 36900 738
92500 37000 740
92750 37100 742
93000 37200 744
93250 37300 746
93500 37400 748
93750 37500 750
94000 37600 752
94250 37700 754
94500 37800 756
94750 37900 758
95000 38000 760
95250 38100 762
95500 38200 764
95750 38300 766
96000 38400 768
96250 38500 770
96500 38600 772
96750 38700 774
97000 38800 776
97250 38900 778
97500 39000 780
97750 39100 782
98000 39200 784
98250 39300 786
98500 39400 788
98750 39500 790
99000 39600 792
99250 39700 794
99500 39800 796
99750 39900 798
100000 40000 800

Ready to order?

If you have any additional questions, or need a custom quote our team is always available to help.

  • Refractory Mortar

    Refractory Cement
    Wet Mortar 3000℉

    $80.00 – $2,400.00 Select options

What is Ceramic Fiberboard Glue?

Fiberboard glue is a colloidal silica-based glue best used for joining two pieces of ceramic fiber board together or patching small areas. The glue is manufactured by dispersing ceramic fibers in a liquid-based refractory binder system. The resulting viscous consistency allows the glue to be easily applied to refractory ceramic fiber surfaces by troweling or hand forming. Drying can be performed at a range of temperatures from ambient to extreme. Once fully dried, the glue can be sanded or cut using traditional finishing methods due to the product's excellent tensile strength. Additional coats can be applied after the full drying of the base.

Available in grades rated for 2300℉, 2600℉, and 3000℉.

Benefits

  • Ease and versatility of application.
  • Excellent adhesion and finishing properties.
  • Ability for multiple coats and greater thickness if required.

Ceramic Fiber Glue

Applications

  • Joining ceramic fiber products, such as boards.
  • Adhesive and coating for Vacuum Formed Ceramic Fiber Shapes.
  • Repair cracks or damage areas for burner blocks or ceramic fiber shapes.
  • Flame resistant coating.

Useful Charts

Ceramic Fiberboard Glue Properties

Properties 2300℉ 2600℉
Color before Firing
Color after Firing		 Off-white
Cream white		 Off-white
Cream white
Maximum Temperature 1260℃ | 2300℉ 1427℃ | 2600℉
Continuous Use Temperature. 1093℃ | 2000℉ 1260℃ | 2300℉
Normal layer Thickness (in) 1/16" | 1/8" 1/16" | 1/8"
LOI (wt%) 4-10 4-10
Typical Shrinkage (%)
24hrs @ 2000℉
-
-
Packaging 1 qt.
1 gal.
5 gal.		 1 qt.
1 gal.
5 gal.

Ceramic Fiberboard Glue Info & Pricing

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If you have any additional questions, or need a custom quote our team is always available to help.

  • Ceramic Fiber Glue from CeraMaterials

    Ceramic Fiberboard Glue

    $25.00 – $400.00 Select options

What is a Ceramic Fiberboard Moldable Mix?

A ceramic moldable mix consist of fibers dispersed in a slightly sticky refractory binder system to permit vibratory casting rated to 2300F. The putty-like consistency allows easy application by caulking, troweling, hand-forming, and pressure molding. Mix readily dries over a range of temperatures from ambient to high temperatures. Once drained in place, the moldable hardens with high tensile strength and resistance to molten metals.

Benefits

  • Ability to create custom shapes and sizes for unique applications.
  • Ease of use and varying application methods.
  • Dries over a range of temperatures.
  • Mix hardens with high tensile strength and resistance to molten metals.

Ceramic Fiberboard Moldable Mix

Applications

  • Patching refractory joints and cracks
  • Hardware protection of ceramic fiber furnace linings.
  • Patching for burner blocks & vacuum formed ceramic fiber parts.

Useful Charts

Ceramic Fiberboard Moldable Mix Properties

Properties Values
Color White
Max Temperature 2300℉
Percent Solids 50-60 %
Wet Density 80-90 lbs/ft³
Dry Density 45-55 lbs/ft³
LOI 4-5 %
Shrinkage @ 2000℉ < 5 %
MOR (dry) 400 psi
Consistency Putty

Moldable Mix Info & Properties

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If you have any additional questions, or need a custom quote our team is always available to help.

  • Ceramic Fiberboard Moldable Mix

    Ceramic Fiberboard
    Moldable Mix

    $18.00 – $350.00 Select options