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KASTAS油封K704(重載斯特封)是兩件式單作用桿密封件，由一個特殊混合PTFE型材環(huán)和一個NBR彈性體環(huán)作為激勵元件組成。
| 訂貨號 | d(f8)*D(H8)*B(+0.2/-0.0) | r |
| K704-140 | 140*160*10 | 0.4 |
| K704-155 | 155*175*10 | 0.4 |
| K704-200 | 200*220*10 | 0.4 |
| K704-240 | 240*265*12.5 | 0.4 |
| K704-280 | 280*305*12.5 | 0.4 |
| K704-290 | 290*315*12.5 | 0.4 |
| K704-300 | 300*325*12.5 | 0.4 |
| K704-310 | 310*340*15 | 0.8 |
| K704-320 | 320*350*15 | 0.8 |
| K704-330 | 330*360*15 | 0.8 |
| K704-340 | 340*370*15 | 0.8 |
| K704-380 | 380*410*15 | 0.8 |
| K704-415 | 415*445*15 | 0.8 |
| K704-475 | 475*505*15 | 0.8 |
| K704-560 | 560*584*17.5 | 1.2 |
| K704-570 | 570*605*17.5 | 1.2 |