kSil® GP530
kSil® GP530 is a closed cell, lightweight silicone sponge with a density of 515 kg/m³ and a compression force deflection of 172 kPa — the highest in the kSil® GP cellular sponge range. It is rated for service from -60°C to +230°C and carries the highest tensile strength in the GP cellular range at 2000 kPa, with a compression set of 2%. Water absorption is less than 5%, and the material is available in thicknesses from 1.5 mm to 8.0 mm.
Key Properties
- Compression Force Deflection: 172 kPa (ASTM D1056)
- Tensile Strength: 2000 kPa (ASTM D412)
- Elongation: 130% (ASTM D412)
- Compression Set: 2% (ASTM D1056)
- Density: 515 kg/m³ (ASTM D1056)
- Operating Temperature Range: -60°C to +230°C
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Density | 515 kg/m³ | ASTM D1056 |
| Minimum Thickness | 1.50 mm | — |
| Maximum Thickness | 8.00 mm | — |
| Colors Available | White, Black, Riox | Visual |
Mechanical Properties
| Property | Value | Test Method |
| Compression Force Deflection | 172 kPa | ASTM D1056 |
| Compression Set | 2% | ASTM D1056 |
| Tensile Strength | 2000 kPa | ASTM D412 |
| Elongation | 130% | ASTM D412 |
| Water Absorption | <5% | ASTM D1056 |
Thermal Properties
| Property | Value | Test Method |
| Min Operating Temperature | -60°C | — |
| Max Operating Temperature | 230°C | — |
- Die-cut gaskets requiring the firmest compression resistance and highest tensile strength in the GP cellular sponge range
- Flexible sealing solutions in extreme-temperature environments where maximum mechanical durability is required
- Aerospace sealing applications demanding a high-density, high-strength closed cell silicone sponge
- Automotive sealing components subject to the most severe compressive and thermal service conditions
- Water contact sealing applications requiring high tensile strength with low water absorption
Common industries: Aerospace, Automotive, Industrial Manufacturing, Water Infrastructure.
kSil® GP530 is the highest-density grade in the kSil® GP general purpose closed cell silicone sponge range. With a density of 515 kg/m³ and a compression force deflection of 172 kPa, it provides the firmest compression response in the range and is designed for the most demanding sealing applications where maximum mechanical strength, dimensional stability, and resistance to permanent deformation are required across extreme operating temperatures.
The GP530 delivers the highest tensile strength in the GP cellular range at 2000 kPa per ASTM D412, alongside a compression set of 2% per ASTM D1056 — matching the GP450 grade for elastic recovery performance. Elongation is 130% and water absorption is less than 5%, consistent with its closed cell construction. The available thickness range of 1.5 mm to 8.0 mm targets thin, high-performance sealing profiles. The material is available in White, Black, and Riox colorways.
What differentiates GP530 from GP450 and lower-density grades in the kSil® GP cellular sponge range?
GP530 is the densest and mechanically strongest grade in the GP cellular range. Its compression force deflection of 172 kPa is the highest in the range, and its tensile strength of 2000 kPa exceeds all other GP cellular grades, including the GP450 (1500 kPa). Like the GP450, it achieves a 2% compression set — the lowest in the range. The GP530 is the appropriate choice when the application demands both the firmest sealing response and the highest tensile integrity.
Why is compression set critical for cellular silicone sponge materials?
Compression set measures the degree of permanent deformation a material retains after sustained compressive loading. For gaskets and seals, high compression set leads to progressive loss of contact force against mating surfaces, ultimately causing seal failure. GP530's compression set of 2% per ASTM D1056 is among the lowest in the GP cellular range, indicating that the material will maintain effective sealing contact over extended service life.
What is the operating temperature range for GP530?
GP530 is rated from -60°C to +230°C.
Is GP530 suitable for regulated environments?
No compliance standards are specified on the manufacturer's TDS for GP530. Suitability for regulated environments must be confirmed through application-specific testing.
How should GP530 be specified?
Specify grade (GP530), thickness, color (White, Black, or Riox), compliance requirements, dimensional tolerances, and finished format.
