Back-up ring

FF.GI Srl produces BK anti-extrusion rings in the most common materials like:

- FLON-CHEM 1000 Virgin PTFE;
- FLON-CHEM 1002 PTFE + 25% carbographite;
- PA6;
- PA6 + Mos2 (black);
- PEEK virgin;
- PEEK PVX (black);
- etc…

We offer the possibility to have a maximum external diameter up to 1100mm; for larger diameters we could offer rings type BK and BKC in FLON-CHEM 1000 virgin PTFE realized with welding process.