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BELLOFOAM™ 7829 vs. BISCO® HT-800 | UL 94 V-0 Fire Retardant Silicone Comparison
BELLOFOAM™ 7829 vs. BISCO® HT-800
Comparing UL 94 V-0 Fire Retardant Silicone Sponge Materials
| FEATURE | BELLOFOAM™ 7829 | BISCO® HT-800 |
|---|---|---|
| UL 94 V-0 Rated | Yes | Yes |
| Closed Cell Silicone Sponge | Yes | Yes |
| Thickness Availability | Up to 2 inches, no plying | Less than 2 inches |
| Minimum Order Quantity | As Low As 1 Sheet | Varies |
| Adhesive Backing Available | Yes | Available Through Fabricators |
| Custom Flash Cut Parts | Yes | Depends on Supplier |
| Made in USA | Yes | Yes |
Key Takeaways
- BELLOFOAM™ 7829 and Rogers BISCO® HT-800 are both UL 94 V-0 rated silicone sponge materials.
- Both offer flame resistance, thermal stability, and environmental durability.
- BELLOFOAM™ 7829 is available in thicknesses up to 2 inches, no plying.
- Bellofram Elastomers offers low minimum order quantities and custom fabrication.
- Both materials are suitable for electrical, transportation, industrial, and battery applications.
This article compares BELLOFOAM™ 7829 UL 94 V-0 silicone sponge and BISCO® HT-800 fire resistant silicone foam to help engineers, purchasing teams, and OEMs determine the right solution for their application.
What is BELLOFOAM™ 7829?
BELLOFOAM™ 7829 is a closed-cell silicone sponge sheet material engineered for sealing and cushioning applications that require:
- UL 94 V-0 flame retardancy
- Excellent compression set resistance
- Low stress relaxation
- Strong UV and ozone resistance
- Long service life in harsh environments
BELLOFOAM™ 7829 is a fire retardant foam solution manufactured in the USA and available with value-added services such as adhesive backing and flash cut parts.
What is BISCO® HT-800 (Rogers HT-800)?
BISCO® HT-800, manufactured by Rogers Corporation (also known as Rogers HT-800), is a medium-firm silicone sponge material known for:
- UL 94 V-0 flame resistance
- Consistent compression properties
- Environmental durability
- Electrical insulation performance
HT-800 is widely used in applications requiring fire resistant silicone foam with reliable sealing performance in elevated temperature environments.
What Is UL 94 V-0 Silicone Sponge?
UL 94 V-0 silicone sponge is a flame-retardant elastomeric material that self-extinguishes within 10 seconds after ignition and does not produce flaming drips during testing.
Why UL 94 V-0 Matters
- Improves fire safety
- Supports regulatory compliance
- Reduces flame propagation
- Protects electrical equipment
- Helps meet OEM design requirements
BELLOFOAM™ 7829 vs. BISCO HT-800: Key Feature Comparison
Click here to view full specs for BELLOFOAM™ 7829.
Frequently Asked Questions
UL 94 V-0 is a flammability classification under the UL 94 standard developed by Underwriters Laboratories. V-0 is the strictest vertical rating. A material with a UL94 V-0 rating must meet strict conditions in a standardized flame test: 1) the flame must extinguish in 10 seconds or less after being applied 2) the material must not keep burning for long after the flame is removed 3) no flaming drips are allowed. In simple terms, it means the material will stop burning quickly and not spread fire dangerously under standardized test conditions.
Yes. BELLOFOAM™ 7829 is UL 94 V-0 rated, meaning it self-extinguishes within 10 seconds and meets stringent vertical burn test criteria for electrical, transportation, industrial, and energy storage applications. For OEMs requiring fire retardant foam or fire resistant silicone for their applications, this rating is critical for safety compliance.
Yes, BELLOFOAM™ 7829 offers comparable flame resistance, compression performance, and environmental durability while also providing thicknesses up to 2 inches, low minimum order quantities, and custom fabrication options.
Yes. Bellofram Elastomers offers adhesive-backed BELLOFOAM™ 7829 along with flash-cut gaskets and other value-added fabrication services.
Fire resistant silicone refers broadly to silicone materials that resist ignition and flame spread. Fire retardant foam typically refers to materials that meet standardized flame ratings such as UL 94 V-0.
When Should You Choose Fire Resistant Silicone Foam?
| APPLICATION | WHY UL 94 V-0 MATTERS |
|---|---|
| Electrical Enclosures | Helps reduce flame spread and improve equipment safety. |
| Battery Systems | Supports thermal management and fire safety requirements. |
| LED Lighting Assemblies | Provides heat resistance and reliable sealing. |
| Transportation Systems | Supports passenger safety and regulatory compliance. |
| Industrial Control Panels | Protects sensitive electronics from heat and environmental exposure. |
| HVAC Equipment | Maintains long-term sealing performance in demanding environments. |
When Should You Choose BELLOFOAM™ 7829 Instead of Rogers HT-800?
While both materials offer UL 94 V-0 flame resistance and durable sealing performance, BELLOFOAM™ 7829 may be the better choice when:
1. You Need Extra Thickness
- Projects requiring material up to 2” thick without lamination
- Still typically lighter in weight than HT-800
2. You Need Small Quantities
- Order as little as one sheet
- Suitable for prototyping and small production runs
3. You Need Fabricated Parts
- Adhesive backing options
- Flash cut custom gaskets
4. You Need U.S.-Based Manufacturing
- Manufactured domestically
- Reduced lead times
- Direct access to Bellofram Elastomers’ responsive engineering and manufacturing teams
For customers seeking an alternative to HT-800, BELLOFOAM™ 7829 offers similar performance with added flexibility in ordering, specs, and fabrication.
Choosing the Right UL 94 V-0 Silicone Sponge
Both BELLOFOAM™ 7829 and BISCO® HT-800 (Rogers HT-800) are proven performers in high-temperature, flame-sensitive environments.
However, if your project requires:
- Greater thickness availability
- Low minimum order quantities
- Custom fabrication
- Domestic support
BELLOFOAM™ 7829 delivers performance with added flexibility.
Benefits of Choosing Bellofram Elastomers
Bellofram Elastomers partners with engineers and manufacturers to consistently deliver medium density flame retardant foam that meets expectations. We pride ourselves on offering premium performance, custom solutions, and export support every time. Our products are engineered to meet the highest standards, ensuring reliability even in extreme environments.
Working with us provides several benefits:
- Premium Performance: Our products are designed for durability, flexibility, and resistance to harsh conditions, ensuring reliable performance in demanding applications.
- Custom Solutions: We understand that every project has unique requirements. Our team works closely with you to develop tailored solutions that meet your specific needs.
- Export Support: We offer comprehensive expert support, ensuring our high-quality products are available to customers worldwide.
Opting for the right fire retardant foam manufacturer mitigates risks and guarantees consistent quality. For UL 94 V-0 requirements, trust our high-quality BELLOFOAM™ 7829. In choosing Bellofram Elastomers you gain access to a single-source provider that reduces complexity and lead times. Our scalable production capabilities allow us to support both small prototypes and large-scale manufacturing, providing the precision, reliability, and efficiency you need for project success.
For more information on custom solutions, or to discuss your specific needs, contact our team today. We’re here to help you find the perfect solution for your application.