Advantages:
-Good wiper effect.
-Good reistance to chemical and wear resistance.
-Retaining residual oil film.
-Space-saving construction.
-Low cost, economical solution
-Firm fit in the froove due to metallic press fit.
| ITEM | d | D | L(H) |
| JSDKB | 20 | 32 | 6/9 |
| JSDKB | 25 | 37 | 6/9 |
| JSDKB | 30 | 42 | 6/9 |
| JSDKB | 32 | 44 | 7/10 |
| JSDKB | 34 | 46 | 7/10 |
| JSDKB | 35 | 47 | 7/10 |
| JSDKB | 38 | 50 | 7/10 |
| JSDKB | 40 | 52 | 7/10 |
| JSDKB | 45 | 57 | 7/10 |
| JSDKB | 55 | 69 | 8/11 |
| JSDKB | 60 | 74 | 8/11 |
| JSDKB | 75 | 89 | 8/11 |
| JSDKB | 80 | 94 | 8/11 |
| JSDKB | 85 | 99 | 8/11 |
| JSDKB | 90 | 104 | 8/11 |
| JSDKB | 95 | 109 | 8/11 |
| JSDKB | 100 | 121 | 9/12 |
| JSDKB | 105 | 126 | 9/12 |
| JSDKB | 110 | 131 | 9/12 |
| JSDKB | 115 | 136 | 9/12 |
| JSDKB | 120 | 141 | 9/12 |
| JSDKB | 125 | 146 | 9/12 |
| JSDKB | 130 | 160 | 10/14 |
| JSDKB | 140 | 170 | 10/14 |
| JSDKB | 150 | 180 | 10/14 |
| JSDKB | 160 | 190 | 10/14 |
| JSDKB | 155 | 175 | 10/14 |
| JSDKB | 160 | 180 | 10/14 |
| JSDKB | 170 | 190 | 10/14 |
| JSDKB | 175 | 195 | 10/14 |
| JSDKB | 180 | 205 | 12/17 |
| JSDKB | 200 | 225 | 12/17 |
| JSDKB | 225 | 250 | 12/17 |
| JSDKB | 250 | 275 | 12/17 |