常用材质介绍
1.丁腈（NBR） 耐油、耐磨、耐温度-20到100℃，硬度可选75/80/85/90度 ，颜色：黑色
2.氟胶（FKM） 耐油、耐磨、耐温度-20到200℃，耐酸碱腐蚀，硬度可选75/80/85/90度，颜色：绿色或者黑色
| SIZE | 英制螺纹 | 公制螺纹 | ED圈尺寸（内径*外径*厚度） |
| ED08 | --- | M8*1.0 | 6.5*9.9*1.0 |
| ED10 | G1/8A | M10*1.0 | 8.4*11.9*1.0 |
| ED12 | --- | M12*1.5 | 9.8*14.4*1.5 |
| ED14 | G1/4A | M14*1.5 | 11.6*16.5*1.5 |
| ED16 | --- | M16*1.5 | 13.8*18.9*1.5 |
| ED17 | G3/8A | M17*1.5 | 14.7*18.9*1.5 |
| ED18 | --- | M18*1.5 | 15.7*20.9*1.5 |
| ED20 | --- | M20*1.5 | 17.8*22.9*1.5 |
| ED21 | G1/2A | M21*1.5 | 18.5*23.9*1.5 |
| ED22 | --- | M22*1.5 | 19.6*24.3*1.5 |
| ED24 | --- | M24*1.5 | 21.8*26.9*1.5 |
| ED26 | G3/4A | M26*1.5 | 23.9*29.2*1.5 |
| ED27 | G3/4A | M27*2.0 | 23.9*29.2*2.0 |
| ED30 | --- | M30*2.0 | 26.7*32.7*2.0 |
| ED33 | G1A | M33*2.0 | 29.7*35.7*2.0 |
| ED36 | --- | M36*2.0 | 32.7*38.7*2.0 |
| ED39 | --- | M39*2.0 | 35.7*41.7*2.0 |
| ED42 | G1-1/4 | M42*2.0 | 38.8*45.8*2.0 |
| ED48 | G1-1/2 | M48*2.0 | 44.7*50.7*2.0 |
| ED60 | --- | M60*2.0 | 56.5*66.5*4.0 |
| ED60 | --- | M60*2.0 | 56.1*62.7*2.5 |
| ED60 | G2A | M60*2.5 | 56.4*62.7*2.5 |
