1. Structural Design and Sealing Advantages


The core adopts a “flat-face seal + O-ring compression seal” structure compliant with ISO 6149/SAE J1453 standards, addressing the issues of “low-pressure micro-leakage and high installation precision requirements” in traditional metal-sealed joints:


Core Elastic Sealing: A groove is integrated into the joint body or sealing surface to embed an O-ring (made of materials like nitrile rubber NBR or fluorocarbon rubber VITON). Tightening the nut causes the joint body to conform to the sealing plane. The compressed O-ring fills microscopic gaps in the sealing surface, achieving “zero micro-leakage” sealing suitable for low-to-medium pressure fluid transmission.


Auxiliary Positioning Structure: Certain models feature a “flange positioning” design to prevent O-ring displacement or distortion during installation. The flat contact surface distributes pressure evenly, avoiding localized over-compression that could damage the O-ring and extending seal service life.


2. Key Characteristics and Compatibility Requirements


Compatibility: Fits pipe diameters ranging from 6mm to 42mm. Universally compatible with hard pipes (carbon steel, stainless steel) in ferrule fittings. Select models support interchangeability with ORFS (O-ring face seal) fittings without requiring separate pipeline replacement.

Operating Limits: Maximum working pressure ≤315 bar.


Seal Material: Temperature range varies by O-ring material — NBR: -35°C to +100°C (suitable for mineral oils, compressed air); VITON: -25°C to +200°C (suitable for high-temperature oils, corrosive fluids). Applicable for hydraulic return lines and pneumatic control circuits.

 

Fitting Material Options: Carbon steel, stainless steel.