Face Seal
FR Series Face Seal Fittings
Features
- Metal-to-metal seal to provide perfect leak-tight service for working conditions from critical vacuum to high pressure
- Precision manufactured gasket to ensure best performance
- Test port at nut for easy leak testing
- Silver-plated female threads
- Standard surface roughness finished to an average of Ra 10 μin. (0.25μm) or electropolished to Ra 5 μin. (0.13 μm) optional
- All seal faces and male threads protected with plastic caps
- Every gland and body marked with size, material and heat code
Technical Data
- Sizes range from 1/16″ to 1″ and 6 mm to 18 mm
- Thread Specifications
| Thread Type | Specifcation |
| NPT | ASME B1.20.1,SAE AS71051 |
| Unified | ASME B1.1, SAE J475 |
Working Pressure:
- Working pressures shown in the catalogue are calculated according to ASME B31.1 at ambient temperature.
Working Temperature:
| Component | Material | Max Temperature |
| Fittings | 316 SS 316L SS 316L VAR SS | 1000°F (538°C) |
| Gaskets | 316L SS Copper Nickel | 1000°F (538°C) 400°F (204°C) 600°F (316°C) |
Installation Instructions
- Assemble the gland, nut, gasket and male nut as below. Finger tight the nut.
- For fittings the 316L SS and Nickel gaskets, tighten the nut 1/8 turn with a wrench while holding the male nut or the fitting body steady. Tighten the nut 1/4 turn for those with copper gaskets.
Cautions
- Dimensions are for reference only and are subject to change.
- Over-tightening will damage the sealing beads and lead to possible leak.
- Utilise a new gasket for each assembly.
- Tungsten Inert Gas Welding (TIG) is recommended
- Always apply proper thread sealants on tapered pipe threads.
- Do not loosen or tighten fittings when system is pressurised.