DOT Air Brake Push-In Fittings
DOT Air Brake Push-In Fittings Manufacturer – FMVSS 571.106 Certified
As a premier DOT brass fittings manufacturer, Sin Ling specializes in producing high-performance DOT air brake fittings and push in fittings for heavy-duty trucks, trailers, buses, and off-road commercial vehicles. Our entire range of DOT push to connect air fittings is fully compliant with FMVSS 571.106 and engineered for seamless installation with SAE J844 Type A & Type B dot air line fittings, ensuring reliable performance across all regulated air brake systems.
Validated for Frame-to-Axle Applications (Higher Tensile Strength)
Unlike many standard DOT push-to-connect fittings that only meet general application levels, Sin Ling fittings are tested and validated to meet the demanding Frame-to-Axle requirements of FMVSS 571.106.
- Full Test Coverage: All required performance tests were completed and passed, including temperature conditioning, chemical resistance, vibration resistance, and tensile strength validation.
- Superior Retention: Our fittings demonstrate substantially higher pull-out strength, providing an extra safety margin for towing vehicles and axles under intense vibration.
Tested for Durability: HNBR O-Rings & In-House Manufacturing
Sin Ling stands out as a quality-focused push in fittings manufacturer by prioritizing long-term durability.
- Premium Sealing: Every DOT air brake fitting uses a premium HNBR O-ring, offering superior resistance to high temperature, ozone, and chemical exposure—far outperforming standard NBR O-rings used by other dot brass fittings manufacturers.
- Precision CNC: Every critical component is manufactured in-house using multi-spindle CNC machines. As a dedicated dot air line fittings manufacturer, we control the entire process to ensure exact tolerances and reliable sealing geometry.
Complete DOT Push-In Fitting Range
The Sin Ling DOT series includes a full selection of one touch fittings optimized for high flow efficiency:
- Straight unions & Bulkhead connectors
- Male & female connectors
- Reducing connectors
- Elbows (45° / 90°) and Tees
- Threaded variations (NPT, NPTF, ORB)
FAQ
Q1: Are you a certified DOT air brake fittings manufacturer?
Yes. As a compliant manufacturer, all our products meet FMVSS 571.106 and DOT requirements for air brake systems.
Q2: Which tubing types are compatible with your push in fittings?
Our dot push to connect air fittings are designed for SAE J844 Type A and Type B nylon air brake tubing.
Q3: Do you offer HNBR O-rings for high durability?
Yes. We supply HNBR O-ring options to ensure superior sealing in our dot brass fittings.
Q4: Can Sin Ling support OEM manufacturing?
Absolutely. We are an experienced push in fittings manufacturer providing OEM, Tier-1, and aftermarket supply with flexible production capabilities.
