Metal & Semi-Metal Sealing Solutions for Petroleum & Chemical Industries
Ring Joint Gasket(RTJ)
Applications: Wellhead & Christmas Tree Systems (API 6A) Pipeline Flange Connections (ASME B16.20) High-Pressure Vessels (Shell & Tube Heat Exchangers)
Key Features
Material Options: Soft iron, Stainless Steel 316, Inconel 625 Pressure Range: Up to 15,000 psi (1034 bar) Temperature: -200°C ~ +650°C Surface Finish: RTJ (Ring-Type Joint) grooves with 125-250 µin Ra
Why Choose Metal Rings?
100% metal-to-metal contact for fire-safe performance No creep relaxation under thermal cycling Mandatory for sour service (NACE MR0175 compliant)
Spring action compensates for flange rotation Superior creep resistance vs. solid gaskets Cost-effective for large diameter flanges
Grooved Metal Gasket
Typical Use Cases: Compressor Flanges (API 617) Hydrogen Service Supercritical CO2 Pipelines
Design Variants
Concentric Serrations: For uniform bolt loading Spiral Serrations: Enhanced sealing at lower stresses Double-Sided: Different patterns for dissimilar materials
Material Selection Guide
Medium: Recommended Material Sour Gas: Inconel 625 with Ni coating Cryogenic: Aluminum 1100 with indium plating Steam: SS316 with silver plating
Critical Benefits
Micro-grooves create multiple sealing barriers 30% lower seating stress vs. flat metal gaskets Reusable up to 3 cycles with proper inspection
Comparative Selection Table
Type Best For Pressure Limit Reusability Cost Factor Ring Gaskets Hyperbaric systems 15,000 psi No ★★★★ Spiral Wound Thermal cycling 6,000 psi Limited ★★ Serrated Vibration service 10,000 psi Yes ★★★
Technical Support
Our engineers provide: Gasket Stress Calculation (FEA modeling available) Bolt Load Optimization to prevent flange distortion Failure Analysis with digital microscopy inspection "Right seal selection prevents 80% of flange leakage incidents" - Request our Seal Selection Checklist for your specific application. (End with CTA for gasket specification sheets or API/ASME compliance documentation)
This Version
Focuses on engineering decision-making factors Provides immediately usable technical data Highlights safety-critical applications Uses comparative formatting for easy specification Maintains commercial awareness (cost, reusability) Would you like to include specific case studies of these gaskets in LNG/offshore applications?
