The FA guide ring is mainly used to guide and support the piston in the cylinder barrel. The inner diameter of the FA support ring has a special U-shaped profile that can be locked in the groove to prevent the guide ring displacement. The number of guide rings can be adapted to the size of the lateral loads inside cylinders. FA support rings are normally produced with an angled cut or a straight cut to facilitate installation. In the case of several rings installed in a single groove, the cuts should be staggered.
| Pressure | Speed | Temperature | Media |
| - | 3m/s |
–40° C / +100° C (POM with glass fibre, Nylon) -55° C / +260° C (PTFE+BRONZE) |
mineral-oil-based hydraulic fluids, water-oil emulsions, fire-resistant hydraulic fluids, and compressed air |

| Part No. | d | D | D1 | H | c | a |
| FA0560 | 56 | 48 | 52 | 12 | 3 | 6.2 |
| FA0630 | 63 | 55 | 59 | 12 | 3 | 6.2 |
| FA0650 | 65 | 57 | 61 | 12 | 3 | 6.2 |
| FA0700 | 70 | 62 | 66 | 12 | 3 | 6.2 |
| FA0750 | 75 | 67 | 71 | 12 | 3 | 6.2 |
| FA0800 | 80 | 72 | 76 | 14 | 3 | 7.2 |
| FA0850 | 85 | 77 | 81 | 14 | 3 | 7.2 |
| FA0900 | 90 | 82 | 86 | 14 | 3 | 7.2 |
| FA0950 | 95 | 87 | 91 | 14 | 3 | 7.2 |
| FA1000 | 100 | 92 | 96 | 14 | 3 | 7.2 |
| FA1050 | 105 | 97 | 101 | 14 | 3 | 7.2 |
| FA1100 | 110 | 102 | 106 | 14 | 3 | 7.2 |
| FA1150 | 115 | 107 | 111 | 14 | 3 | 7.2 |
| FA1200 | 120 | 112 | 116 | 14 | 3 | 7.2 |
| FA1250 | 125 | 115 | 121 | 17.5 | 4 | 9.2 |
| FA1300 | 130 | 120 | 126 | 17.5 | 4 | 9.2 |
| FA1350 | 135 | 125 | 131 | 17.5 | 4 | 9.2 |
| FA1400 | 140 | 130 | 136 | 17.5 | 4 | 9.2 |
| FA1450 | 145 | 135 | 141 | 17.5 | 4 | 9.2 |
| FA1500 | 150 | 140 | 146 | 17.5 | 4 | 9.2 |
| FA1550 | 155 | 145 | 151 | 17.5 | 4 | 9.2 |
| FA1600 | 160 | 150 | 156 | 17.5 | 4 | 9.2 |
| FA1700 | 170 | 160 | 166 | 20 | 6 | 9.2 |
| FA1800 | 180 | 170 | 176 | 20 | 6 | 9.2 |
| FA1900 | 190 | 180 | 186 | 20 | 4.5 | 11.7 |
| FA2000 | 200 | 190 | 196 | 20 | 4.5 | 11.7 |
| FA2100 | 210 | 200 | 206 | 25 | 8 | 11.7 |
| FA2200 | 220 | 210 | 216 | 25 | 8 | 11.7 |
| FA2250 | 225 | 215 | 221 | 25 | 8 | 11.7 |
| FA2300 | 230 | 220 | 226 | 25 | 8 | 11.7 |
| FA2350 | 235 | 225 | 231 | 33 | 15 | 11.7 |
| FA2400 | 240 | 230 | 236 | 33 | 15 | 11.7 |
| FA2500 | 250 | 240 | 246 | 33 | 15 | 11.7 |
| FA2650 | 265 | 255 | 261 | 33 | 15 | 11.7 |
| FA2750 | 275 | 265 | 271 | 33 | 15 | 11.7 |
| FA2800 | 280 | 270 | 276 | 33 | 15 | 11.7 |
| FA2900 | 290 | 280 | 286 | 33 | 15 | 11.7 |
| FA3000 | 300 | 290 | 296 | 33 | 15 | 11.7 |
| FA3100 | 310 | 298 | 304 | 35 | 8.5 | 13.25 |
| FA3200 | 320 | 308 | 314 | 35 | 8.5 | 13.25 |
| FA3400 | 340 | 328 | 334 | 35 | 8.5 | 13.25 |
| FA3500 | 350 | 338 | 344 | 35 | 8.5 | 13.25 |
| FA3600 | 360 | 348 | 354 | 35 | 8.5 | 13.25 |
| FA3800 | 380 | 368 | 374 | 35 | 8.5 | 13.25 |
| FA4000 | 400 | 388 | 394 | 35 | 8.5 | 13.25 |
| FA4200 | 420 | 408 | 414 | 35 | 8.5 | 13.25 |
| FA4250 | 425 | 413 | 419 | 35 | 8.5 | 13.25 |
| FA4500 | 450 | 438 | 444 | 35 | 8.5 | 13.25 |
| FA4800 | 480 | 468 | 474 | 35 | 8.5 | 13.25 |
| FA5000 | 500 | 488 | 494 | 35 | 8.5 | 13.25 |
| FA5600 | 560 | 548 | 554 | 35 | 8.5 | 13.25 |
| FA6000 | 600 | 588 | 594 | 35 | 8.5 | 13.25 |
| FA6300 | 630 | 618 | 624 | 35 | 8.5 | 13.25 |
| FA6500 | 650 | 638 | 644 | 35 | 8.5 | 13.25 |
| FA7000 | 700 | 688 | 694 | 35 | 8.5 | 13.25 |
| FA7500 | 750 | 738 | 744 | 35 | 8.5 | 13.25 |
| FA7800 | 780 | 768 | 774 | 35 | 8.5 | 13.25 |
| FA8000 | 800 | 788 | 794 | 35 | 8.5 | 13.25 |