The wire seal is crimped onto the terminal pin for waterproof auto connectors to ensure the waterproof, sealing, and so on.
The wire seal is made of rubber or silicone. The following table lists the characteristics and performance of rubber.
| / | NR | SBR | NBR | EPDM | CR | IIR | FPM | Oil resistant Silicone |
| Hardness Shore A | 40- Customizable | Customizable | 40- Customizable | Customizable | 50-80, Customizable | Customizable | Customizable | 20-80 Customizable |
| Temperature Rang | －60℃～＋80℃ | around －50℃～＋100℃ | around －30℃～＋100℃ | around －50℃～＋150℃ | around －45℃～＋100℃ | around －40℃～＋120℃ | around －20℃～＋200℃ | around －60℃～＋200℃ |
| Weather Resistance | — | — | — | — | — | — | — | — |
| Ultraviolet Resistance | — | — | — | Excellent | — | — | Excellent | Excellent |
| Ozone Resistance | Bad | Bad | Bad | Excellent | Pretty Good | — | Pretty Good | Excellent |
| Heat Resistance | Bad | Pretty Good | Pretty Good | Excellent | Good | Excellent | Excellent | Excellent |
| Oil Resistance | Bad | Bad | Excellent | Good | Pretty Good | Bad | Excellent | Excellent |
| Acid Resistance | Bad | Bad | Bad | — | Pretty Good | Excellent | Excellent | Bad |
| Alkali Resistance | — | — | — | — | — | — | — | Bad |
| Water Resistance | — | — | — | — | — | — | Excellent | Excellent |
| Abrasion Resistance | Good | Pretty Good | Common | Pretty Good | Good | — | Excellent | Pretty Good |
| Electric Insulativity | Pretty Good | Pretty Good | Bad | Pretty Good | Pretty Good | Excellent | — | Excellent |
| Tensile Strength | Pretty Good | Bad | Extremely Low | Common | Common | — | — | Excellent |
| Tear Resistance | Pretty Good | Bad | Extremely Low | Common | Common | — | — | Excellent |
| Compression Resistance | — | — | — | — | — | — | — | Excellent |
| Gas Barrier Property | — | — | Pretty Good | — | Pretty Good | Excellent | — | Excellent |
| Flame Resistance | — | — | — | Pretty Good | Pretty Good | — | — | Excellent |
| Processability | Pretty Good | Good | Good | Good | Common | Bad | Bad | Common |
| Application | Engine shock absorber, etc. | Tyres, etc. | Can be used in a variety of oil-resistant products, etc. | Automotive rubber products, etc. | Cable sheath, etc. | Inner tube, shockproof products, etc. | Aircraft accessories, etc. | Hose, seals, and high temperature resistant wire and cable insulating layer, food and medical industry. |
| Color | Black | Black | Black | Black | Black | Black | Black | Colorful |
