
Contact blocks and other insulators for our standard connectors are manufactured from high performance engineering plastic materials. The standard materials of each connector series are listed under Electrical & Contact Specifications in Section 4 through 10. Ceramics and other dielectrics are available on special order.
| Insulator and Sealing | International Synbol | Flammability |
| Insulator | PEEK - PTFE - PBT | UL 94 V-O |
| Interface O-rings (Receptacles) |
Viton ® EPDM |
UL 94 V-O UL 94 HB |
| Sealant Material - IP68 (Receptacles) - Hermetic |
Silicon compound Epoxy compound |
UL 94 V-O UL 94 HB |
| Cable Sealing - IP68 (Plugs) |
TPE-S | UL 94 HB |
Contact blocks and other insulating components are manufactured from various high-performance materials, typically PEEK® (polyether-etherketone), PBT (polybutylene-terephthalate), or PTFE (polytetrafluoroethylene). They provide superior performance over competing materials in operating temperature ranges, as well as resistance to chemicals, ionizing radiation, and water absorption. For unusual applications, ceramic and other specialized dielectric materials are also available.
| Material Symbol | Chemical Name | Characteristics | |||||
| Volume Resistivity (ohm/cm) | Dielectric Strength (kV/mm) | Temperature Range (°C) | Water Absorption (%) | Radiation Resistance (Rad) | Color | ||
| PEEK | Polyether- ether- ketone | >10^16 | 19 | From -65°C to +200°C | 0,3 | 10^9 | beige |
| PBT | Polybuty- lenetere- phthalate | >10^14 | 19 | From -65°C to +135°C | 0,2 | 10^8 | black |
| PTFE | Polytetra- fluore- thylene | 10^18 | 20 | From -65°C to +160°C | 0,01 | 10^4 | white |