BISCO Bun Silicone | Seal & Design, Inc.
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BISCO® Cellular Silicones

Bun SiliconeBISCO®bun silicone is a cellular silicone that is cast into blocks up to 8 inches thick. This lightweight, high quality material is typically used in cushioning and sealing applications and features FST (flame, smoke, toxicity) resistance. With a low compression set, and superior weather and UV resistance, this foam is favored as a cushion foam in passenger rail car and mass transit seating.

MF1®Bun Silicone comes in soft, medium, and firm in it's traditional white color. MF1-55 is now available in gray, and is targeted more toward general industrial applications. BISCO® SilFXTM foam is the lightest silicone foam that is specially designed for aircraft seating and cushioning. As a non-petroleum, open-cell silicone, SilFXTM eliminates the need for fire-blocking while allowing for thinner seat cushions with lasting comfort.

BISCO® Bun Silicone Products

Product
Standard
Color
Typical
Density
Tensile
Strength
Details
Grade
Datasheet
MF1-35
White
104 PCF
12.5 PSI
Passes ASTM G21 Anti-microbial testing.
Soft Industrial Grade Foam
MF1-35-55-75 PDF
MF1-55
White
112 PCF
12.5 PSI
Passes ASTM G21 Anti-microbial testing.
Medium Industrial Grade Foam
MF1-35-55-75 PDF
MF1-55
Gray
112 PCF
12.5 PSI
Passes FVMSS302 Flame Resistance testing.
UL94 V-0 and HF-1 Certification- Gray Only
Medium Industrial Grade Foam
MF1-55-Gray PDF
MF1-75
White
128 PCF
13.5 PSI
Passes ASTM G21 Anti-microbial testing.
Firm Industrial Grade Foam
MF1-35-55-75 PDF
MF1-SilFXTM
White
3.2 PCF
12 PSI
Passes ASTM G21 Anti-microbial testing.
Passes FST Testing.
Low Non-Petroleum Foam
MF1-SilFXTM PDF