NQ‑8521R features low hardness, good elasticity and low compression set. It also exhibits excellent adhesion to various metal and plastic surfaces. This product is suitable for encapsulation of optical modules, telecommunication base stations, PDAs, radio devices, mobile phones, as well as other cast or plastic housings and electronic assemblies.
Product Features
① Excellent EMI shielding performance with shielding effectiveness exceeding 80 dB even at 18 GHz.
② Can be rapidly dispensed onto metal or plastic surfaces by automatic dispensing systems.
③ Good elasticity with soft surface texture.
④ Processable directly on substrates to save labor and assembly time. It eliminates high‑cost mold charges and supports rapid prototyping.
⑤ More material‑efficient compared with cutting and compression‑molding processes.
Typical Properties
| Item | Test Standard | Unit | Test Result |
|---|---|---|---|
| Color (Visual Inspection) | Visual | — | Gray |
| Base Material | — | — | Silicone Rubber |
| Conductive Filler | — | — | Nickel / Carbon |
| Hardness | ASTM D2240 | Shore A | 45 |
| Density | ASTM D792 | g/cm³ | 1.9 |
| Volume Resistivity | MIL‑DTL‑83528C | Ohm‑cm | 0.04 |
| Flammability Rating | UL‑94 (Bars Test) | — | V‑0 |
| Compression Set | ASTM D395 | % | 30 |
| Operating Temperature Range | ASTM D1329 | ℃ | -50 ~ +125 |
| Curing Mode | — | — | Room‑temperature Cure |
| Curing Condition | — | ℃ | 25 |
| Curing Time | — | h | 24 |
Storage Conditions
Shelf‑life: 3 months at ‑30 ℃ ~ ‑10 ℃.
Store in a refrigerator. Keep away from high‑temperature environments and heat sources. Excessively high storage temperature will significantly shorten product service life.
Packaging Specifications
30 mL / cartridge
50 mL / cartridge
