B11 internal sealing trapezoidal back-up rings are engineered with a positively activated design specifically to resist internal seal extrusion and prevent damage in ultra-high pressure applications. This unique trapezoidal profile ensures the backup ring is effectively energized under pressure to bridge clearance gaps, significantly increasing the pressure rating of internal o-rings and dynamic seals. Our high-precision CNC turned materials, including PTFE, POM, and high-hardness Polyurethane, offer superior resistance to seal nibbling and material loss even under extreme temperatures. By providing a robust physical barrier between the internal seal and the extrusion gap, the B11 profile ensures long-term system integrity for critical hardware in industries like aerospace, mining, and heavy mobile equipment.
| Technical Parameter | Specification | Material Remark |
|---|---|---|
| Pressure Resistance | Up to 150 MPa+ | Ultra-High Pressure |
| Temperature Range | -200°C to +260°C | PTFE® / PEEK® |
| Design Geometry | Trapezoidal Profile | Internal Positive Activation |
| Media Compatibility | Oil, Water, Chemicals, Gas | Universal |
| Material Option 1 | PTFE / Filled PTFE | Standard Chemical |
| Material Option 2 | POM (Polyacetal) / PA (Nylon) | High Modulus |
| Material Option 3 | PEEK / Carbon PEEK | Extreme Pressure |
| Material Option 4 | High Hardness PU (Polyurethane) | Wear Resistant |
| Material Option 5 | NBR 90 / FKM 90 (Rubber) | Static Support |
- Internal trapezoidal positively activated design specifically engineered to resist extrusion in ultra-high pressure environments.
- Available in endless or split configurations to provide a precise fit for internal sealing gaps and easy assembly.
- Dual-functionality as a high-strength internal pressure barrier and a protective shield against seal nibbling and wear.
- Superior material versatility including PTFE, POM, and PA to withstand abrasive media and extreme temperature fluctuations.
We specialize in bespoke sealing solutions, offering custom-engineered B11 internal back-up rings tailor-made to your specific pressure conditions and hardware dimensions. Leveraging instant seal machining, we offer 24h fast lead times for emergency production, ensuring your critical operations resume without costly downtime. Our ISO 9001 certified facility provides Direct Factory Price on all B11 back-up rings with no-mold requirements for bespoke diameters up to 3000mm.
Disclaimer: Variseal®, FlexiSeal®, and other brand names are registered trademarks of their respective owners. Carlock Sealing products are high-quality equivalents and are not affiliated with these trademark holders.
