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Medium Closed Cell Silicone Sponge Rubber
This medium closed cell flame retardant silicone sponge is ideal for sealing and gasket applications where flame resistance and fire safety are a top priority.
It is rated UL 94 HB and is a blue/grey color. It The material is produced with a fabric impression on both sides, is flexible and offers excellent compression set resistance.
In Stock with Immediate Availability
KEY FEATURES
- Blue/grey color
- Flame retardant
- Excellent for seals and gaskets
- High compressibility
- Low compression set
- UV/Ozone resistant
STANDARDS
- UL 94 HB
MATERIAL DETAILS
Available in – Continuous rolls or cut sheets
Thickness available (in) – 0.0625 to 0.500
Typical roll lengths (ft) – 25 to 100
Typical roll widths (in) – 36
Surface finishing – Fabric impression finish, both sides
Cell structure – Closed cell
Color – Blue/grey, others available
TEMPERATURE RANGE
-103°F to +450°F (-75°C to 232°C)
MATERIAL PROPERTIES
| Properties | |||
| Compression deflection (25%) | psi (kPa) | 6-14 (41-96) | ASTM D1056 |
| Density < 0.25” thick | pcf (kg/m3) | 43 (690) max. | ASTM D1056 |
| Density ≥ 0.25” thick | pcf (kg/m3) | 34 (550) max. | ASTM D1056 |
| Compression set (22h, 100°C) | % | 60% max. | ASTM D1056 |
| Tensile strength | psi (kPa) | 125 (862) | ASTM D412 |
| Flammability | – | HB rating | UL 94 |
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SILICONE SPONGE SHEETING GRADES
- Soft Sponge
- Medium Sponge (AMS3195)
- Firm Sponge (AMS3196)
- Extra Firm Sponge
- Fire Retardant (UL 94 HB)
- Fire Retardant (UL 94 V-0)
ACCREDITATION’S
UL 94 HB
ARDL-Tested
More Information
UL 94 HB
- UL 94 HB is a is a safety and flammability standard by Underwriters Laboratories.
- This material is compliant with the UL 94 HB test standard for flammability.
- The horizontal burn test measures how quickly a horizontally oriented polymer specimen burns across when a flame is applied to one end of the sample.
- In order for a material to be classified UL 94 HB, it must not have a burning exceeding 40 mm per minute over a 75 mm span for specimens having a thickness of 3.0 mm to 13 mm. For material with thickness less than 3mm the burning rate should not exceed 75mm per minute over a 75mm span. The material will also be rated as HB if it ceases to burn before the 100mm mark independent of thickness.
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