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Bellofram Dense (Solid Silicone) Products

Our multiple lines, extensive expertise in custom formulations, and tool-making capabilities allow us to produce dense silicone across an almost limitless range. Our dense compounds meet the ASTM D 2000 specifications, ranging in hardness from 30 Shore “A” to 80 Shore “A” durometer. Dense silicone compounds are also available in flame-retardant and NSF/ANSI 51 compliant versions. All silicone compounds are designed to exceed requirements of a wide range of industrial, aerospace, and MIL-specs.

Bellofram Dense Solid Silicone - Extruded

MATERIAL PROPERTIES OF BELLOFRAM HIGH TEAR AND FLEX RESISTANT SOLID SILICONES EXTRUDED PRODUCTS
SOLID SILICONE EXTRUDED PRODUCTS TO SPEC TO SPEC A-A-59588 CL3B, GR30, GR50 ASTM D395 Heat Age, 70 Hours @ +200°C (ASTM D573) ASTM D2137 ASTM D471 ASTM D813 ASTM D2632
SPEC SHEET DOWNLOAD COMPOUND MODEL DUROMETER, SHORE "A" TENSILE STRENGTH min MPa (PSI) ELONGATION % min. TEAR RESISTANCE, kN/m (ppi) COMPRESSION SET, 70 Hours @ +100°C HARDNESS CHANGE TENSILE CHANGE ELONGATION CHANGE BRITTLE POINT, min. °C (°F) WATER IMMERSION, VOLUME CHANGE % DeMATTIA FLEX, (1/2 inch max crack growth) IMPACT RESILIENCE, min %
6305 30 ± 5 6.9 (1000) 500 26.25 (150) 25 ± 5 -20% -35% -70 (-94) +5 500,000 cycles 40
6505 50 ± 5 8.28 (1200) 500 26.25 (150) 20 ±10 -25% -30% -70 (-94) +5 140,000 cycles 45


MATERIAL PROPERTIES OF BELLOFRAM SOLID SILICONE EXTRUDED 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
6304 ASTM D2000 M1GE305 30 ± 5 1175 Change in Tensile Strength, ±30% Change in Elongation, -50% Change in Durometer, ±15 pts Volume change, +63% 28%
6404 ASTM D2000 M1GE405 40 ± 5 1150 Volume change, +61% 42%
6504 ASTM D2000 M1GE505 50 ± 5 930 Volume change, +59% 61%
6604 ASTM D2000 M1GE605 60 ± 5 925 Volume change, +46% 33%
6704 ASTM D2000 M1GE705 70 ± 5 820 Volume change, +41% 42%
6804 ASTM D2000 M1GE805 80 ± 5 810 Volume change, +35% 40%


MATERIAL PROPERTIES OF BELLOFRAM FLAME RETARDANT SOLID SILICONE EXTRUDED PRODUCTS
SPEC SHEET DOWNLOAD COMPOUND MODEL ASTM D2000-08 DESIGNATION DUROMETER SHORE "A" TENSILE MPa (PSI) HEAT AGE, 70 Hours @ +225 °C OIL IMMERSION IRM 903 70 hrs @+150 °C COMPRESSION SET, 22 hrs @+175°C MEETS BURN REQUIREMENTS OF UL 94 V-0
6309 ASTM D2000 M1GE305 30 ± 5 5 ( 725 ) Change in Tensile Strength, ±30% Change in Elongation, -50% Change in Durometer, ±15 pts Volume change, +80% 50% max. PASS
6409 ASTM D2000 M1GE405 40 ± 5 50% max. PASS
6509 ASTM D2000 M1GE505 50 ± 5 70% max. PASS
6609 ASTM D2000 M1GE605 60 ± 5 70% max. PASS
6709 ASTM D2000 M1GE705 70 ± 5 50% max. PASS
6809 ASTM D2000 M1GE805 80 ± 5 50% max. PASS


MATERIAL PROPERTIES OF BELLOFRAM NSF/ANSI 51 CERTIFIED SOLID SILICONE EXTRUDED 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 Hrs @+175°C NSF/ANSI 51 CERTIFIED
6304-NSF ASTM D2000 M1GE305 30 ± 5 1175 Change in Tensile Strength, ±30% Change in Elongation, -50% Change in Durometer, ±15 pts Volume change +63% 28% Yes
6404-NSF ASTM D2000 M1GE405 40 ± 5 1150 Volume change, +61% 42% Yes
6504-NSF ASTM D2000 M1GE505 50 ± 5 930 Volume change, +59% 61% Yes
6604-NSF ASTM D2000 M1GE605 60 ± 5 925 Volume change, +46% 33% Yes
6704-NSF ASTM D2000 M1GE705 70 ± 5 820 Volume change, +41% 42% Yes
6804-NSF ASTM D2000 M1GE805 80 ± 5 810 Volume change, +35% 40% Yes


Bellofram Dense Solid Silicone - Molded

MATERIAL PROPERTIES OF BELLOFRAM SILICONES HIGH TEAR AND FLEX RESISTANT SOLID SILICONE MOLDED PRODUCTS
SOLID SILICONE MOLDED PRODUCTS TO SPEC TO SPEC A-A-59588 CL3B, GR30, GR50 ASTM D395 Heat Age, 70 Hours @ +200°C (ASTM D573) ASTM D2137 ASTM D471 ASTM D813 ASTM D2632
SPEC SHEET DOWNLOAD COMPOUND MODEL DUROMETER, SHORE "A" TENSILE STRENGTH min MPa (psi) ELONGATION % min. TEAR RESISTANCE, kN/m (ppi) COMPRESSION SET, 70 Hours @ +100°C HARDNESS CHANGE TENSILE CHANGE ELONGATION CHANGE BRITTLE POINT, min. °C (°F) WATER IMMERSION, VOLUME CHANGE % DeMATTIA FLEX, (1/2 inch max crack growth) IMPACT RESILIENCE, min %
8305 30 ± 5 6.9 (1000) 500 26.25 (150) 25 ± 5 -20% -35% -70 (-94) +5 500,000 cycles 40
8505 50 ± 5 8.28 (1200) 500 26.25 (150) 20 ± 10 -25% -30% -70 (-94) +5 140,000 cycles 45


Solid silicone molded products
MATERIAL PROPERTIES OF BELLOFRAM SILICONES SOLID SILICONE MOLDED 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
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%
8404 ASTM D2000 M1GE405 40 ± 5 1235 Volume change, +62% 16%
8504 ASTM D2000 M1GE505 50 ± 5 1100 Volume change, +49% 18%
8604 ASTM D2000 M1GE605 60 ± 5 725 Volume change, +47% 26%
8704 ASTM D2000 M1GE705 70 ± 5 900 Volume change, +38% 28%
8804 ASTM D2000 M1GE805 80 ± 5 1000 Volume change, +30% 23%


MATERIAL PROPERTIES OF BELLOFRAM FLAME RETARDANT SOLID SILICONE MOLDED 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 hrs @+175°C MEETS BURN REQUIREMENTS OF UL 94 V-0
8309 ASTM D2000 M1GE305 30 ± 5 1350 Change in Tensile Strength, ±30% Change in Elongation, -50% Change in Durometer, ±15 pts Volume change, +64% 14% PASS
8409 ASTM D2000 M1GE405 40 ± 5 1235 Volume change, +62% 16% PASS
8509 ASTM D2000 M1GE505 50 ± 5 1100 Volume change, +49% 18% PASS
8609 ASTM D2000 M1GE605 60 ± 5 725 Volume change, +47% 26% PASS
8709 ASTM D2000 M1GE705 70 ± 5 900 Volume change, +38% 28% PASS
8809 ASTM D2000 M1GE805 80 ± 5 1000 Volume change, +30% 23% PASS


MATERIAL PROPERTIES OF BELLOFRAM NSF/ANSI 51 COMPLIANT SOLID SILICONE MOLDED 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 Hrs @+175°C NSF/ANSI 51 CERTIFIED
8304-NSF ASTM D2000 M1GE305 30 ± 5 1350 Change in Tensile Strength, ±30% Change in Elongation, -50% Change in Durometer, ±15 pts Volume change, +64% 14% YES
8404-NSF ASTM D2000 M1GE405 40 ± 5 1235 Volume change, +62% 16% YES
8504-NSF ASTM D2000 M1GE505 50 ± 5 1100 Volume change, +49% 18% YES
8604-NSF ASTM D2000 M1GE605 60 ± 5 725 Volume change, +47% 26% YES
8704-NSF ASTM D2000 M1GE705 70 ± 5 900 Volume change, +38% 28% YES
8804-NSF ASTM D2000 M1GE805 80 ± 5 1000 Volume change, +30% 23% YES