Bellofram Sheet Products
Sponge sheets from Bellofram Silicones are the lightest high-consistency closed cell silicone rubber sheeting material on the market. Ours eliminates wicking by containing truly closed cells, as determined by the stringent ASTM-D-1056 water absorption under vacuum method. The formulation and construction of our sheeting allows for continuous operation of materials over a wide temperature range of -85° to +400°F, with outstanding recovery after compression.
Sheets skived from buns can be supplied from 0.125” to 2.00” thickness, or buns can be skived into sheets using a customer’s own equipment. There are three available ASTM-D-1056 hardness versions of the standard sheet, including one with enhanced fire-retardant additives necessary to meet UL94 V-0 specifications, and a second version with fluorosilicone sponge properties, meeting the requirements of AMS 3323. With these and other available options, Bellofram silicone sheets cover a wide range of demanding physical, temperature, and chemical environments.
| BELLOFOAM™ CLOSED CELL SILICONE SPONGE RUBBER SHEETING | |||||||||
| SPEC SHEET DOWNLOAD | BELLOFOAM™ MATERIAL TYPE | COLOR | COMPRESSION DEFLECTION (PSI) ASTM D-1056 | COMPRESSION SET ASTM D-1056 | DENSITY (LBS/FTᶟ) ASTM D-1056 | WATER ABSORPTION ASTM D-1056 | FLAMMABILITY FMVSS302 | TEMPERATURE RANGE (F°) | MATERIAL SPECIFICATIONS |
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7605 | ALL | 0 to 2 | 6% | 10 MAX | 10% MAX | PASS | -85° to +400° | ASTM D-1056 2D0 |
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7604 | ALL | 2 to 5 | 6% | 12 MAX | 10% MAX | PASS | -85° to +400° | ASTM D-1056 2D1 |
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7704 | ALL | 5 to 9 | 6% | 20 MAX | 10% MAX | PASS | -85° to +400° | ASTM D-1056 2D2 |
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7804 | ALL | 9 to 13 | 4% | 30 MAX | 10% MAX | PASS | -85° to +400° | ASTM D-1056 2D3 MIL-R-46089 GRADE M ASTM-D 1056 2D3 AMS 3195 BMS 1 -23 |
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7629 | GREY ONLY | 0 to 5 | 25% | 12 MAX | 10% MAX | PASS | -85° to +400° | ASTM D-1056 2D0, 2D1 UL 94, V-0 |
| BELLOFOAM™ CLOSED CELL FLUOROSILICONE (FVM) SPONGE SHEETING | |||||||||
| SPEC SHEET DOWNLOAD | MATERIAL | COLOR | CLASS DESIGNATION AMS 3323 | COMPRESSION DEFLECTION (PSI) ASTM D-1056 | COMPRESSION SET ASTM D-1056 | DENSITY (LBS/INᶟ) ASTM D-1056 | FLUID RESISTANCE ASTM D 471 (FUEL B) | TEMPERATURE RANGE (F°) | MATERIAL SPECIFICATIONS |
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7748 | LIGHT BLUE ONLY | CLASS 1 | 2 - 9 | 25% MAX | 0.025 MAX | WEIGHT CHANGE MAXIMUM 0 - 50% | -85° to +400° | AMS3323 SAE AMS3323 MIL-R-6130 Type 2, Grade A,B,and C (excluding paragraph 4.5.7 Flame Resistance)ASTM D6576 Type 2, Grade A,B, and C (excluding paragraph 15 Flame Resistance) |
| MATERIAL PROPERTIES OF BELLOFRAM SILICONES SOLID SHEETING PRODUCTS | |||||||
| SPEC SHEET DOWNLOAD | COMPOUND MODEL | ASTM D2000-08 DESIGNATION | DUROMETER SHORE "A" | TENSILE (PSI) | HEAT AGE, 70 Hours @ +225 °C | OIL IMMERSION IRM 903 70 hrs @+150 °C | COMPRESSION SET, 22 Hours @ +175°C |
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8304 | ASTM D2000 M1GE305 | 30 ± 5 | 1350 | Change in Tensile Strength, ±30% Change in Elongation, -50% Change in Durometer, ±15 pts | Volume change, +64% | 14% |
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8404 | ASTM D2000 M1GE405 | 40 ± 5 | 1235 | Volume change, +62% | 16% | |
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8504 | ASTM D2000 M1GE505 | 50 ± 5 | 1100 | Volume change, +49% | 18% | |
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8604 | ASTM D2000 M1GE605 | 60 ± 5 | 725 | Volume change, +47% | 26% | |
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8704 | ASTM D2000 M1GE705 | 70 ± 5 | 900 | Volume change, +38% | 28% | |
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8804 | ASTM D2000 M1GE805 | 80 ± 5 | 1000 | Volume change, +30% | 23% | |