产品介绍：
产品说明
一般描述
It is used as an air-tight seal, and prevents contamintion
产品性质
| 物料 | PTFE/silicone (blue silicone) aluminum seal (open center) |
| 包装 | pkg of 100 ea |
| manufacturer/tradename | Chromacol 20-AC-ST3 |
| 外径 | 20 mm |
| 直径× 厚度 | 20 mm × 2.9 mm |
| 配件 | thread for 20 mm |
