Bellofram Solid Silicone Elastomer Extrusions

Bellofram Solid Silicone Elastomer Extrusions
Extensive expertise in custom formulations and toolmaking capabilities allow Bellofram Silicones to produce solid silicone elastomer extrusions in almost limitless shapes and hardnesses, and in diameters up to 2.500”.  Our extruded rubber cords, tubes, and custom profiles may be used to make gaskets, seals, and O-rings. They may also be used as grips and handles to ensure worker safety when operating hoses and nozzles. Larger diameter rubber extrusions are popular choices as bumpers and guards for equipment protection. Bellofram Silicones also offers solid silicone rubber extruded materials that can withstand 500,000 flexes, as well as commercial-grade silicones that are maintenance-free in less demanding environments. A fully approved NSF 51 version produced with FDA ingredients is also available, in applications where FDA compliance is required. Bellofram Silicones solid extruded products are very resistant to compression set, high and low temperatures. Multiple extrusion manufacturing and production lines allow us to produce virtually any required quantities with very short lead times. Want to get started right away? No problem! Just refer to the helpful charts below to match one of our 30 to 80 durometer SHORE “A” compounds with a profile of your design, and find a quick solution to even your most complex sealing needs.
Click here for a product sample or quotation.
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
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
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
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
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