特点
该系列密封为外装、单端面、多弹簧、平衡型，采用聚四氟乙烯波纹管结构。
适用范围
密封腔压力：P＝－0.1～0.5MPa
密封腔温度：t=－10℃～120℃
转 速：n≤500r/min
介 质：硫酸、碳酸、盐酸、有机酸等各种强腐蚀性介质
(HG2029-91)
| 规格/尺寸 | d | D | D1 | D2 | D3 | D4 | n-Φ |
| 212-40 | 40 | 160 | 130 | 87 | 72 | 87 | 4-18 |
| 212-50 | 50 | 190 | 150 | 98 | 80 | 100 | 4-18 |
| 212-60 | 60 | 210 | 170 | 110 | 90 | 105 | 4-18 |
| 212-65 | 65 | 210 | 170 | 115 | 95 | 115 | 4-18 |
| 212-70 | 70 | 240 | 200 | 120 | 100 | 115 | 8-18 |
| 212-75 | 75 | 240 | 200 | 130 | 110 | 130 | 8-18 |
| 212-80 | 80 | 240 | 200 | 130 | 110 | 130 | 8-18 |
| 212-90 | 92 | 265 | 225 | 140 | 120 | 140 | 8-18 |
| 212-95 | 95 | 265 | 225 | 145 | 125 | 150 | 8-18 |
| 212-100 | 100 | 280 | 250 | 150 | 130 | 150 | 8-18 |
| 212-110 | 110 | 320 | 280 | 162 | 140 | 165 | 8-18 |
| 212-120 | 120 | 320 | 280 | 172 | 150 | 175 | 8-18 |
| 212-130 | 130 | 375 | 335 | 182 | 162 | 177 | 12-18 |
| 212-140 | 140 | 375 | 335 | 192 | 170 | 195 | 12-18 |
| 212-150 | 150 | 375 | 335 | 202 | 180 | 205 | 12-18 |
| 规格/尺寸 | d | D | D1 | D2 | D3 | D4 | n-Φ |
| 212-40 | 40 | 160 | 130 | 90 | 72 | 88 | 4-Φ14 |
| 212-50 | 50 | 185 | 150 | 100 | 80 | 101 | 4-Φ18 |
| 212-65 | 65 | 205 | 170 | 115 | 95 | 116 |
|
| 212-80 | 80 | 235 | 200 | 130 | 110 | 131 |
|
| 212-95 | 95 | 235 | 200 | 150 | 125 | 151 | 8-Φ18 |
| 212-102 | 102 | 290 | 255 | 150 | 130 | 156 |
|
(69标)
| 规格/尺寸 | d | D | D1 | D2 | D3 | D4 | n-Φ |
| 212-42 | 42 | 170 | 140 | 90 | 72 | 80 | 6-Φ15 |
| 212-50 | 50 | 200 | 170 | 100 | 80 | 101 | 8-Φ15 |
| 212-60 | 60 | 220 | 190 | 110 | 90 | 111 | 10-Φ15 |
| 212-70 | 70 | 280 | 250 | 120 | 100 | 121 |
|
| 212-76 | 76 | 280 | 250 | 130 | 110 | 131 |
|
| 212-80 | 80 | 280 | 250 | 130 | 110 | 131 | 16-Φ15 |
| 212-89 | 89 | 280 | 250 | 140 | 120 | 141 |
|
| 212-95 | 95 | 330 | 300 | 150 | 125 | 151 | 20-Φ15 |
