MIL-R-6130 Silicone Sponge Sheet
Closed Cell Medium Density Silicone Sponge
MIL-R-6130 Specification Grades & Classifications
ElastaPro produces MIL-R-6130 silicone materials across all specified types and firmness grades to match exact engineering callouts:
- Type I (Open-Cell / Semi-Cell): Breathable cellular structure ideal for acoustic dampening and air filtration.
- Type II (Closed-Cell): Imperial closed-cell structure for liquid sealing, weatherproofing, and fluid barrier isolation.
- Grade A (Soft): Compression deflection range for delicate enclosures and low-closure-force covers.
- Grade B (Medium): Standard density balancing firm sealing support with compressibility.
- Grade C (Firm): High-density sponge engineered for heavy load-bearing and structural vibration damping.
Performance Advantages of Military Grade Silicone Sponge
Specifying high-purity MIL-R-6130 silicone from ElastaPro ensures long-term operational performance in mission-critical environments:
- Wide Operational Temperature Spectrum: Flexible from -100°F to +500°F (-73°C to +260°C), maintaining sealing elasticity in Arctic or high-heat engine environments.
- Ozone, UV & Environmental Resistance: Resists breakdown from direct UV exposure, radiation, salt spray, and extreme weather.
- Low Compression Set: Retains structural memory and recovery capability over extended compression cycles.
- Fluid & Moisture Isolation: Closed-cell formulations prevent moisture ingress and resist contamination from hydraulic fluids and oils.
Technical Specifications & Capabilities
ElastaPro manufactures MIL-R-6130 silicone sheets and roll stock to precise thickness tolerances to streamline conversion via die-cutting, waterjet processing, or slitting.
| Property | Capability / Value | Standard / Test Method |
|---|---|---|
| Military Specification | MIL-R-6130 (Type I & Type II) | U.S. Military Standard |
| Cross-Reference Specs | ASTM D1056, AMS 3195, AMS 3196 | Industry Equivalent |
| Firmness Grades | Grade A (Soft), Grade B (Medium), Grade C (Firm) | Compression Deflection |
| Temperature Range | -100°F to +500°F (-73°C to +260°C) | ASTM D1056 |
| Thickness Range | 0.031″ to 0.500″ (0.79 mm to 12.7 mm) | Linear Measurement |
| Available Formats | Continuous Rolls, Sheet Stock, Custom Slit Coils | Factory Production |
Defense & Aerospace Applications
Our MIL-R-6130 silicone sheet and sponge materials are cut into gaskets, seals, and isolators for:
- Naval & Marine Enclosures: Watertight compartment hatches and salt-spray-resistant electronic cabinets.
- Avionics & Radar Housings: Environmental seals shielding sensitive microelectronics from dust, water, and vibration.
- Ground Vehicle Gasketing: Ruggedized door, access panel, and vibration isolation pads for defense vehicles.
- Legacy Defense Spare Parts: Maintenance replacement parts for defense systems specifying original MIL-R-6130 parameters.
Frequently Asked Questions (FAQ)
What is MIL-R-6130 silicone?
MIL-6130 silicone is a U.S. military specification covering cellular, closed-cell silicone rubber stock used primarily for environmental sealing, thermal insulation, and vibration dampening in defense and aerospace applications.
Is MIL-R-6130 silicone still active for defense procurement?
While MIL-R-6130 has been formally cancelled for new military designs in favor of specs like ASTM D1056 and AMS 3195/3196, it remains an essential specification for legacy military equipment maintenance, MRO operations, and defense spare parts contracting.
What is the difference between MIL-R-6130 Type I and Type II?
Type I designates open-cell or semi-open cellular structure focused primarily on sound absorption and light cushioning, whereas Type II specifies closed-cell silicone sponge engineered for fluid exclusion, weatherproofing, and low-water-absorption sealing.