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作为活塞用的单向作用或双向作用（背对背安装）密封圈，U形圈YXD密封圈广泛应用于往复运动的液压系统中，如用于行走机械、注塑机、林业机械、采矿机械、工程机械和工业液压油缸等。在恶劣的工作条件下，也具有良好的机械特性，请先咨询我方。
优点
- 密封效果好
- 耐磨性好，磨损小
- 对重载和活塞杆弯曲没有影响
- 对突加负载无影响
YX-D-16 16 × 10 × 8 YX-D-18 18 × 12 × 8 YX-D-20 20 × 14 × 8
YX-D-22 22 × 16 × 8 YX-D-25 25 × 19 × 8 YX-D-28 28 × 22 × 8
YX-D-30 30 × 22 × 10 YX-D-32 32 × 24 × 10 YX-D-35 35 × 27 × 10
YX-D-40 40 × 32 × 10 YX-D-45 45 × 37 × 10 YX-D-50 50 × 42 × 10
YX-D-55 55 × 47 × 10 YX-D-60 60 × 48 × 14 YX-D-63 63 × 51 × 14
YX-D-65 65 × 53 × 14 YX-D-70 70 × 58 × 14 YX-D-75 75 × 63 × 14
YX-D-80 80 × 68 × 14 YX-D-85 85 × 73 × 14 YX-D-90 90 × 78 × 14
YX-D-95 95 × 83 × 14 YX-D-100100 × 88 ×14 YX-D-105 105× 89 ×14
YX-D-110110 × 94 × 14 YX-D-115115 × 99 × 14 YX-D-120120 × 104 × 14
YX-D-125125 × 109× 14 YX-D-130130 × 114× 14 YX-D-135 135× 119 × 14
YX-D-140 140 × 124 × 14 YX-D-145 145 × 129 × 14 YX-D-150 150 × 134 × 14
YX-D-155 155 × 139 × 14 YX-D-160 160 × 144 × 14 YX-D-165 165 × 149 × 14
YX-D-170 170 × 154 × 18 YX-D-175 175 × 159 × 18 YX-D-180 180 × 164 × 18
YX-D-185 185 × 169 × 18 YX-D-190 190 × 174 × 18 YX-D-195 195 × 179 × 18
YX-D-200 200 × 184 × 18 YX-D-210 210 × 194 × 18 YX-D-220 220 × 204 × 18