Sin Ling provides DOT-approved air brake push-in fittings for metric tube OD sizes commonly used in European and Asian commercial vehicles. All fittings in this category comply with FMVSS 571.106 and are designed for precise engagement with SAE J844 nylon air brake tubing.

Metric tube OD options include 6mm, 8mm, 10mm, and 12mm sizes, supporting a wide range of air brake, suspension, and pneumatic systems used by international truck and trailer manufacturers. Each fitting is produced with precision-machined brass bodies, stainless-steel collets, and reinforced tube supports to ensure consistent sealing and long-term durability.

Built to withstand demanding road conditions, temperature variations, and continuous vibration, these metric-size DOT fittings are ideal for global commercial vehicle platforms. Sin Ling’s metric tube OD fittings offer reliable performance for OEM production, aftermarket distribution, and fleet service operations.