O ring backup ring PTFE provides essential support for O rings, preventing extrusion and enhancing sealing performance. These durable rings reduce leaks, improve system efficiency, and extend the life of hydraulic components. Ideal for enhancing the reliability of hydraulic systems in heavy machinery.
PTFE O Ring Backup Ring, also known as a Teflon backup ring, is designed to support rubber O-rings and prevent extrusion in sealing systems. It is suitable for hydraulic and pneumatic equipment where O-rings are used in both dynamic and static applications, helping improve sealing stability and reduce leakage.
Made from PTFE with a standard white color and density of 2.16 g/cm³, this backup ring offers excellent temperature resistance from -200°C to +260°C. It is suitable for use with JIS or DIN rubber O-rings and provides reliable support for heavy machinery, industrial systems, and hydraulic components.
JSPSEAL provides PTFE O Ring Backup Ring solutions for hydraulic and pneumatic sealing applications. By preventing O-ring extrusion and improving sealing support, these rings help reduce leaks, extend O-ring service life, and improve equipment reliability. They are ideal for maintenance, repair, and replacement in demanding industrial and heavy machinery environments.
| O Ring size | Backup Ring Size | O Ring size | Backup Ring Size | ||||
| d1 | D1 | L1 | d1 | ||||
| 219.3×5.7 | 220 | 230 | 1.7 | 129.4×3.1 (G130) | 130 | 135 | 1.25 |
| 219.3×5.7 (G220) | 220 | 230 | 1.9 | 129.5×3 | 130 | 135 | 1.3 |
| 219.5×8.4 (P220) | 220 | 235 | 2.75 | 129.3×5.7 | 130 | 140 | 1.7 |
| 224.5×8.4 (P225) | 225 | 240 | 2.75 | 129.6×5.7 (P130) | 130 | 140 | 1.9 |
| 229.2×5.7 | 230 | 240 | 1.7 | 131.6×5.7 (P132) | 132 | 142 | 1.9 |
| 229.3×5.7 (G230) | 230 | 240 | 1.9 | 134.4×3.1 (G135) | 135 | 140 | 1.25 |
| 229.5×8.4 (P230) | 230 | 245 | 2.75 | 134.5×3 | 135 | 140 | 1.3 |
| 234.5×8.4 (P235) | 235 | 250 | 2.75 | 134.3×5.7 | 135 | 145 | 1.7 |
| 239.3×5.7 | 240 | 250 | 1.7 | 134.6×5.7 (P135) | 135 | 145 | 1.9 |
| 239.3×5.7 (G240) | 240 | 250 | 1.9 | 139.4×3.1 (G140) | 140 | 145 | 1.25 |
| 239.5×8.4 (P240) | 240 | 255 | 2.75 | 139.5×3 | 140 | 145 | 1.3 |
| 244.5×8.4 (P245) | 245 | 260 | 2.75 | 139.5×5.7 | 140 | 150 | 1.7 |
| 249.3×5.7 | 250 | 260 | 1.7 | 139.6×5.7 (P140) | 140 | 150 | 1.9 |
| 249.3×5.7 (G250) | 250 | 260 | 1.9 | 144.4×3.1 (G145) | 145 | 150 | 1.25 |
| 249.5×8.4 (P250) | 250 | 265 | 2.75 | 144.5×3 | 145 | 150 | 1.3 |
| 254.5×8.4 (P255) | 255 | 270 | 2.75 | 144.3×5.7 | 145 | 155 | 1.7 |
| 259.3×5.7 (G260) | 260 | 270 | 1.9 | 144.6×5.7 (P145) | 145 | 155 | 1.9 |
| 259.5×8.4 (P260) | 260 | 275 | 2.75 | 149.3×5.7 | 150 | 160 | 1.7 |
| 264.5×8.4 (P265) | 265 | 280 | 2.75 | 149.3×5.7 (G150) | 150 | 160 | 1.9 |
| 269.3×5.7 | 270 | 280 | 1.7 | 149.6×5.7 (P150) | 150 | 160 | 1.9 |
| 269.3×5.7 (G270) | 270 | 280 | 1.9 | 149.5×8.4 (P150A) | 150 | 165 | 2.75 |
| 269.5×8.4 (P270) | 270 | 285 | 2.75 | 154.3×5.7 | 155 | 165 | 1.7 |
| 274.5×8.4 (P275) | 275 | 290 | 2.75 | 154.3×5.7 (G155) | 155 | 165 | 1.9 |
| 279.3×5.7 (G280) | 280 | 290 | 1.9 | 154.5×8.4 (P155) | 155 | 170 | 2.75 |
| 279.5×8.4 (P280) | 280 | 295 | 2.75 | 159.3×5.7 | 160 | 170 | 1.7 |
| 284.5×8.4 (P285) | 285 | 300 | 2.75 | 159.3×5.7 (G160) | 160 | 170 | 1.9 |
| 289.3×5.7 (G290) | 290 | 300 | 1.9 | 159.5×8.4 (P160) | 160 | 175 | 2.75 |
| 289.5×8.4 (P290) | 290 | 305 | 2.75 | 164.3×5.7 | 165 | 175 | 1.7 |
| 294.5×8.4 (P295) | 295 | 310 | 2.75 | 164.3×5.7 (G165) | 165 | 175 | 1.9 |
| 299.3×5.7 (G300) | 300 | 310 | 1.9 | 164.5×8.4 (P165) | 165 | 180 | 2.75 |
| 299.5×8.4 (P300) | 300 | 315 | 2.75 | 169.3×5.7 | 170 | 180 | 1.7 |
| 314.5×8.4 (P315) | 315 | 330 | 2.75 | 169.3×5.7 (G170) | 170 | 180 | 1.9 |
| 319.5×8.4 (P320) | 320 | 335 | 2.75 | 169.5×8.4 (P170) | 170 | 185 | 2.75 |
| 334.5×8.4 (P335) | 335 | 350 | 2.75 | 174.3×5.7 | 175 | 185 | 1.7 |
| 339.5×8.4 (P340) | 340 | 355 | 2.75 | 174.3×5.7 (G175) | 175 | 185 | 1.9 |
| 119.5×3 | 120 | 125 | 1.3 | 174.5×8.4 (P175) | 175 | 190 | 2.75 |
| 119.3×5.7 | 120 | 130 | 1.7 | 179.3×5.7 | 180 | 190 | 1.7 |
| 119.6×5.7 (P120) | 120 | 130 | 1.9 | 179.3×5.7 (G180) | 180 | 190 | 1.9 |
| 124.4×3.1 (G125) | 125 | 130 | 1.25 | 179.5×8.4 (P180) | 180 | 195 | 2.75 |
| 124.5×3 | 125 | 130 | 1.3 | 184.3×5.7 | 185 | 195 | 1.7 |
| 124.3×5.7 | 125 | 135 | 1.7 | 184.3×5.7 (G185) | 185 | 195 | 1.9 |
| 124.6×5.7 (P125) | 125 | 135 | 1.9 | 184.5×8.4 (P185) | 185 | 200 | 2.75 |
* All manufacturer's names, part numbers, and descriptions are used for reference purposes only. We do not imply that any part shown is the product of these manufacturers.
We ship worldwide via DHL, FedEx, UPS, TNT, and EMS for small orders, and by sea freight for bulk orders. Standard delivery time is 5–7 working days for small orders and 15–30 days for sea freight.
All products are carefully packaged in neutral packaging with foam protection to prevent damage during transit. Custom packaging with your branding is available for OEM orders.
We accept multiple payment methods for your convenience. For new customers, we typically require 100% advance payment for small orders. For established partnerships, we offer flexible terms including 30% deposit with balance before shipping.
