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Meta-Aramid Nomex® Acoustic Felt 300gsm | Flame Retardant Sound Insulation Panel Core for Data Centers & Server Rooms | ASTM E84 Class A
✓ 100% Meta-Aramid Nomex® Fiber — Non-Woven Needle-Punched Felt, 300gsm, 150cm Width
✓ ASTM E84 Class A / EN 13501-1 B-s1,d0 Fire Rated — No Melting, No Dripping, Low Smoke
✓ High NRC Sound Absorption — Porous Structure Dampens Mid-High Frequency Noise
✓ 200°C Continuous Heat Resistance — Zero Thermal Shrinkage, No Sagging or Powdering
✓ RoHS & REACH Compliant — Halogen-Free, Heavy Metal-Free, Safe for Occupied Data Centers
✓ 20-Year HAILIDUN™ Factory Direct — Custom GSM & Thickness Available, Global JIT Delivery
- Overview
- Meta-Aramid vs Melamine vs Fiberglass Acoustic Core compare
- Recommended Products
Product Overview
Meta-Aramid Acoustic Insulation Felt (AF300) is a non-woven needle-punched felt engineered as the core damping layer for sound insulation panels in data centers, server rooms, and critical IT facilities. At 300gsm with 150cm width, it combines Class A fire safety with high NRC sound absorption — meeting the strictest building codes without compromising acoustic performance.
Material: 100% Meta-Aramid | Weight: 300 gsm | Width: 150 cm | Fire: ASTM E84 Class A | Brand: HAILIDUN™
Key Features
| Material | 100% Meta-Aramid — Nomex® Grade, Non-Woven Needle-Punched Felt |
| Fire Rating | ASTM E84 Class A / EN 13501-1 B-s1,d0 — No melting, no dripping, low smoke emission |
| Sound Absorption | High NRC performance — porous fiber structure effectively absorbs mid-to-high frequency noise |
| Heat Resistance | Continuous 200°C — zero thermal shrinkage, no sagging or powdering over time |
| Dimensional Stability | Low thermal shrinkage rate — maintains panel flatness in varying temperature and humidity |
| Lightweight | Low-density felt keeps overall panel weight down while delivering high tensile and tear strength |
| Environmental | Halogen-free, heavy metal-free — RoHS & REACH compliant, safe for occupied spaces |
| Thickness Options | 2mm / 3mm / 5mm / 8mm — custom thickness available |
Applications
| Data Centers | Core damping layer for server room acoustic wall and ceiling panels |
| Server Rooms | Sound-insulating partition boards, equipment enclosure linings |
| Office Buildings | Fire-rated acoustic panels for meeting rooms and open-plan spaces |
| Industrial Facilities | Machinery soundproof enclosures, generator room acoustic treatment |
| Recording Studios | Broadband absorber core material for professional acoustic panels |
Customization Options
| Weight (GSM) | 200 / 300 / 400 / 500 gsm — match your target NRC and panel density |
| Thickness | 2mm / 3mm / 5mm / 8mm / 10mm — custom compressions available |
| Width | 150cm standard — slit to your panel dimension |
| Surface Finish | Plain / Heat-Pressed / Laminated with facing fabric |
| Color | Natural White / Custom Dyed |
Packaging & Shipping
| Packaging | Plastic Bag + Woven Bag per Roll (30–50 m / roll) or Cut Sheets |
| Port | Shantou / Shenzhen / Guangzhou, China |
| Lead Time | 3–5 Days (Stock) / 7–15 Days (Custom Weight/Thickness) |
| MOQ | 100 m — Free A4 Sample for Testing |
| Certifications | ASTM E84 Class A / EN 13501-1 / RoHS / REACH / ISO 9001 |
FAQ
Q: What fire rating does this felt achieve?
A: ASTM E84 Class A (flame spread index ≤25, smoke developed index ≤450) and EN 13501-1 B-s1,d0. The meta-aramid fiber does not melt or drip — it chars without contributing to flame spread. Smoke emission is extremely low, critical for occupied data center environments.
Q: How does meta-aramid felt compare to melamine or fiberglass acoustic foam?
A: Meta-aramid felt outperforms both in fire safety — melamine foam degrades above 120°C and fiberglass requires additional fire barriers. Meta-aramid is inherently Class A without chemical treatments. It also offers superior durability with no dusting or fiber shedding over time.
Q: Can you pre-laminate the felt to facing fabrics?
A: Yes. We offer heat-lamination to acoustic fabrics, non-woven scrims, or perforated facings. This reduces your panel assembly steps and ensures consistent bond quality.
Q: What thickness do I need for good sound absorption?
A: 3mm for general noise reduction, 5mm for broadband mid-frequency absorption, 8mm for full-range acoustic treatment including low frequencies. We can provide NRC test data for each thickness to help you specify.
Why Meta-Aramid Felt Is the Superior Acoustic Core Material
- Class A Fire Without Chemicals — unlike melamine foam and fiberglass which require fire-retardant additives, meta-aramid is inherently flame-resistant at the molecular level
- Zero Fiber Shedding — no airborne particles, no irritation — safe for 24/7 occupied data centers with strict air quality requirements
- 200°C Continuous Operation — 2× the thermal headroom of melamine foam, no degradation near hot server exhaust
- RoHS & REACH Ready — pre-compliant for EU and global building material regulations, no reformulation needed
- Half the Panel Weight — 300gsm meta-aramid felt achieves the same NRC as 600gsm fiberglass, reducing structural load on ceilings and walls
Material Comparison for Acoustic Panel Cores
| Property | Meta-Aramid Felt | Melamine Foam | Fiberglass | PET Felt |
|---|---|---|---|---|
| Fire Rating | Class A (Inherent) | Class B (Treated) | Class A (Treated) | Class B (Treated) |
| Max Temp | 200°C | 120°C | 250°C | 100°C |
| NRC at 300gsm | 0.75 | 0.80 | 0.70 | 0.55 |
| Fiber Shedding | None | Minimal | High | None |
| Halogen-Free | Yes (Native) | Yes | With special binder | Yes |
| Dimensional Stability | ★★★★★ | ★★★ | ★★★★ | ★★ |
| Cost per m² (5mm) | $$$ | $$ | $ | $$ |
OEM Partnership with HAILIDUN™
- Roll-by-Roll Consistency — every production batch tested for GSM, thickness, and tensile strength uniformity
- Pre-Lamination Service — we bond the felt to your chosen facing fabric, reducing your panel assembly to a single-step mounting process
- Fire Test Support — we provide ASTM E84 and EN 13501-1 test reports to support your panel certification
- JIT to Acoustic Panel Manufacturers — reliable delivery to major construction material supply chains worldwide
