B12 internal back-up rings are engineered with a positively activated design backing up on triangular faces to specifically prevent internal seal extrusion and material damage. This precision-engineered triangular geometry allows the ring to be energized under pressure, effectively bridging the clearance gap between the internal seal and the hardware bore. Our high-precision CNC turned materials, including PTFE, POM, and high-hardness Polyurethane, provide an exceptional modulus to resist "seal nibbling" even in high-temperature or ultra-high pressure environments. By providing a robust, stable support base for internal O-rings and dynamic seals, the B12 profile ensures long-term leak-free performance and system integrity for critical applications in space exploration, defense, and heavy hydraulics.
| Technical Parameter | Specification | Material Remark |
|---|---|---|
| Pressure Resistance | Up to 100 MPa+ | High Pressure Support |
| Temperature Range | -200°C to +260°C | PTFE® / PEEK® |
| Design Geometry | Triangular Face | 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) | Elastic Support |
- Triangular face positively activated design specifically engineered to prevent internal seal extrusion under pressure.
- Available in endless or split configurations to ensure a precise fit for complex internal sealing grooves.
- Dual-functionality as a high-modulus internal pressure barrier and a protective shield against seal material loss.
- Superior material versatility including PTFE, POM, and high-hardness PU to withstand abrasive media and chemicals.
We specialize in bespoke sealing solutions, offering custom-engineered B12 internal back-up rings tailor-made to your specific operating conditions and unique hardware dimensions. With no-mold required technology, we provide cost-effective small batches and low MOQ test samples with zero-tooling lead times, accelerating your development cycle. Our ISO 9001 certified facility ensures high-precision B12 profiles with 24h fast lead times for critical industrial applications 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.
