SPG-piston seal
SPG is a compact double acting piston seal for medium to heavy duty applications. The reinforced, heat stabilized, thermoplastic sealing face with step-cut joint allows the seal to pass over ports, making it an ideal choice for double acting telescopic cylinders.
It comprises a bronze filled PTFE face ring, which is pre-loaded by a square section NBR ring. The cap ring is precision machined from a compression moulded billet. Compression moulding of the material offers consistently superior physical properties as compared to automatic moulded products. The machined face ring has chamfered corners for easy installation and a surface finish free from the “orange peel” effect associated with automatic moulded products. As only the PTFE face ring is in contact with the sliding surface, friction is very low and stick slip movement is eliminated. The housing width allows the designer to use a narrow width piston, but it is recommended that an adequate bearing be mounted on either side of the seal as shown.
Materials
Standard materials are bronze / PTFE with a NBR square section energizer.
| Material | Poer-transmission fluid | Temperature | Speed | Pressure | Max. Gap F |
| PTFE+bronze | Mineral Oil (NBR) | -30 – +110 | ≦ 15m/s | 160 bar | F ≦ 0.6mm |
| Mineral Oil (FKM) | -30 – +200 | 250 bar | F ≦ 0.4mm | ||
| 400 bar | F ≦ 0.2mm |
| Chamfers & Rad(mm) | Tolerance | Surface Finishing | ||||||||
| μm Ra | μm Rt | |||||||||
| S ≦ | 3.75 | 5.5 | 7.5 | 10.5 | 12.5 | 15 | ØD1 | H9 | 0.1-0.4 | ≦ 4 |
| C ≧ | 2 | 3 | 5 | 7.5 | 8 | 8.5 | Ød1 | h9 | ≦ 1.6 | ≦ 10 |
| r1 ≧ | 0.4 | 0.8 | 1.2 | 1.6 | 1.6 | 2.0 | L | +0.2 – 0 | ≦ 3.2 | ≦ 16 |
SPG PISTON SEAL LIST
| ITEM NO. | SIZE | ||||
| SPG | d | D | h | H | C |
| 30 | 20.5 | 30 | 4.3 | 4.5 | 2 |
| 31.5 | 22 | 31.5 | 4.3 | 4.5 | 3.5 |
| 32 | 22.5 | 32 | 4.3 | 4.5 | 3.5 |
| 35 | 25.5 | 35 | 4.3 | 4.5 | 3.5 |
| 35.5 | 26 | 35.5 | 4.3 | 4.5 | 3.5 |
| 40 | 30 | 40 | 4.3 | 4.5 | 3.5 |
| 45 | 35 | 45 | 4.3 | 4.5 | 3.5 |
| 50 | 40 | 50 | 4.3 | 4.5 | 4 |
| 55 | 45 | 55 | 4.3 | 4.5 | 4 |
| 56 | 46 | 56 | 4.3 | 4.5 | 4 |
| 60 | 50 | 60 | 4.3 | 4.5 | 4 |
| 63 | 48 | 63 | 7.3 | 7.5 | 4 |
| 65 | 50 | 65 | 7.3 | 7.5 | 4 |
| 69 | 54 | 69 | 7.3 | 7.5 | 4 |
| 70 | 55 | 70 | 7.3 | 7.5 | 5 |
| 71 | 56 | 71 | 7.3 | 7.5 | 5 |
| 75 | 60 | 75 | 7.3 | 7.5 | 5 |
| 80 | 65 | 80 | 7.3 | 7.5 | 5 |
| 85 | 70 | 85 | 7.3 | 7.5 | 5 |
| 90 | 75 | 90 | 7.3 | 7.5 | 5 |
| 95 | 80 | 95 | 7.3 | 7.5 | 5 |
| 100 | 85 | 100 | 7.3 | 7.5 | 5 |
| 105 | 90 | 105 | 7.3 | 7.5 | 5 |
| 108 | 92 | 108 | 7.3 | 7.5 | 5 |
| 110 | 94 | 110 | 7.3 | 7.5 | 5 |
| 112 | 96 | 112 | 7.3 | 7.5 | 6.5 |
| 120 | 104 | 120 | 7.3 | 7.5 | 6.5 |
| 125 | 109 | 125 | 7.3 | 7.5 | 6.5 |
| 130 | 114 | 130 | 7.3 | 7.5 | 6.5 |
| 135 | 119 | 135 | 7.3 | 7.5 | 6.5 |
| 140 | 124 | 140 | 7.3 | 7.5 | 6.5 |
| 145 | 129 | 145 | 7.3 | 7.5 | 6.5 |
| 150 | 134 | 150 | 7.3 | 7.5 | 6.5 |
| 155 | 139 | 155 | 7.3 | 7.5 | 6.5 |
| 160 | 144 | 160 | 7.3 | 7.5 | 6.5 |
| 170 | 148 | 170 | 10.8 | 11 | 6.5 |
| 180 | 158 | 180 | 10.8 | 11 | 6.5 |
| 190 | 168 | 190 | 10.8 | 11 | 6.5 |
| 200 | 178 | 200 | 10.8 | 11 | 6.5 |
| 204 | 182 | 204 | 10.8 | 11 | 6.5 |
| 210 | 188 | 210 | 10.8 | 11 | 6.5 |
| 215 | 193 | 215 | 10.8 | 11 | 6.5 |
| 220 | 198 | 220 | 10.8 | 11 | 6.5 |
| 224 | 202 | 224 | 10.8 | 11 | 6.5 |
| 225 | 203 | 225 | 10.8 | 11 | 6.5 |
| ITEM NO. | SIZE | ||||
| SPG | d | D | h | H | C |
| 230 | 208 | 230 | 10.8 | 11 | 6.5 |
| 240 | 218 | 240 | 10.8 | 11 | 6.5 |
| 250 | 228 | 250 | 10.8 | 11 | 6.5 |
| 260 | 236 | 260 | 11.7 | 12 | 7.5 |
| 270 | 246 | 270 | 11.7 | 12 | 7.5 |
| 280 | 256 | 280 | 11.7 | 12 | 7.5 |
| 290 | 266 | 290 | 11.7 | 12 | 7.5 |
| 300 | 276 | 300 | 11.7 | 12 | 7.5 |
| 310 | 286 | 310 | 11.7 | 12 | 7.5 |
| 320 | 296 | 320 | 11.7 | 12 | 7.5 |
| 330 | 308 | 330 | 9.75 | 10 | 10 |
| 360 | 336 | 360 | 11.7 | 12 | 10 |
| 400 | 376 | 400 | 11.7 | 12 | 10 |
| 485 | 455 | 485 | 14.8 | 15 | 10 |
| 500 | 470 | 500 | 14.8 | 15 | 10 |
| 550 | 515 | 550 | 17.2 | 17.5 | 10 |
| 600 | 570 | 600 | 14.8 | 15 | 10 |
| 650 | 620 | 650 | 14.8 | 15 | 15 |
| 720 | 690 | 720 | 14.8 | 15 | 15 |
| 800 | 785 | 800 | 12.7 | 13 | 15 |
| 900 | 870 | 900 | 24.5 | 25 | 15 |
| 930 | 890 | 930 | 19 | 20 | 15 |
| 935 | 920 | 935 | 12.7 | 13 | 15 |
| 950 | 925 | 950 | 17.7 | 18 | 15 |
| 1000 | 960 | 1000 | 19.7 | 20 | 20 |
| 1060 | 1020 | 1060 | 19.7 | 20 | 20 |
| 1120 | 1080 | 1120 | 19.7 | 20 | 20 |
| 1150 | 1110 | 1150 | 19.7 | 20 | 20 |
| 1180 | 1130 | 1180 | 19.7 | 20 | 20 |
| 1210 | 1170 | 1210 | 19 | 20 | 20 |
| 1250 | 1210 | 1250 | 19.7 | 20 | 20 |
| 1260 | 1220 | 1260 | 19.7 | 20 | 20 |
| 1400 | 1350 | 1400 | 19.7 | 20 | 20 |
| 1500 | 1460 | 1500 | 19.7 | 20 | 20 |
| 1650 | 1600 | 1650 | 24 | 25 | 20 |
SPG PART NUMBERS:
5J7004
5J7004A
1U3998
1U3998A
8J6213
8J6213A
5J7010
5J7010A
6J1972
6J1972A
2443839
6J0793
6J0793A
5J7013A
5J8011
5J8011A
5J5402
5J5402A
5J7854
5J7854A
5J4986
5J4986A
5J4987
5J4987A
5J5020
5J5020A
5J7234A
5J4988A
9J4981A
5J4989
5J4989A
5J4990
5J4990A
5J4991
5J4991A
5J4997
5J4997A
5J4993
5J4993A
9J7117A
5J7016
5J7016A
5J5559A
6J9385A
5J7019
5J7019A
1214179
1674004
1449485
1980659
1403750
1617144
1617145
1754721
1200890
2107029
1463923
1931394
1463968
1617149
1934313
2107026
2332584
1445287
1931368
0963893
0967803
0961564
0861345
2344583
0961570
8C9193