Phenyl HTV (PMQ) Silicone Rubber
Silico® PMQ‑HTV is a phenyl-modified silicone rubber with excellent low-temperature flexibility, radiation resistance, and thermal stability. Ideal for aerospace, cryogenics, and harsh environment applications.
Product Overview
Silico® PMQ‑HTV Silicone Rubber is a high-consistency phenyl-modified HTV silicone elastomer engineered for exceptional flexibility at ultra-low temperatures and superior resistance to radiation and thermal aging. With a tailored phenyl content, PMQ‑HTV is widely used in aerospace, cryogenics, electronics, and other extreme-environment applications.
Key Technical Specifications
| Property | Typical Range |
|---|---|
| Operating Temperature | –100 °C to +250 °C (short-term up to 300 °C) |
| Phenyl Content | 5–25 mol% (customizable) |
| Hardness (Shore A) | 30–60 |
| Tensile Strength | 7–9 MPa |
| Elongation at Break | 700–1000% |
| Tear Strength | 30–40 kN/m |
| Compression Set | 30–45% (200 °C / 24 h) |
| Dielectric Strength | ≥20 kV/mm |
All values are typical and can be adjusted per customer specification.
Processing & Curing Options
Curing Systems:
Peroxide-cured (standard)
Platinum-cured (on request for high-purity applications)
Processing Methods:
Compression molding, injection molding, extrusionMaterial Form:
Translucent to clear gum, customizable color and filler level available
Performance Advantages
Excellent Low-Temperature Flexibility: Maintains elasticity at –100 °C and below
Radiation Resistance: Withstands ionizing radiation and UV exposure
Thermal Stability: Reliable under continuous high-heat conditions
Flame Retardancy: Flame-resistant grades available for aerospace and transportation
Electrical Insulation: Suitable for high-voltage and insulating components
Typical Applications
Aerospace: High-altitude O-rings, seals, and insulation
Cryogenics: Low-temperature hoses, connectors, and gaskets
Electronics: Radiation-resistant insulators and dampers
Transportation: Flexible grommets, vibration isolation parts
Defense: Components in extreme mechanical and thermal conditions
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