- Background
In chemical laboratories and online analytical instruments, high-purity gases such as nitrogen, argon, and hydrogen are commonly used in gas supply systems. To prevent contamination and leakage, all fittings must ensure high sealing performance, cleanliness, and be suitable for repeated disassembly and reassembly. - Common Challenges
Welded fittings may contaminate the gas
Standard threaded fittings often fail to provide reliable sealing
Sealing surfaces are easily damaged after disassembly, leading to leakage during reuse - Solution: RUI Double Ferrule Stainless Steel Fittings
316L stainless steel with polished internal surfaces to maintain gas purity
Metal-to-metal sealing without the need for thread sealants
Compatible with hydrogen, oxygen, and corrosive gases - Configuration Recommendations
Gas inlet: 1/4″ OD ferrule fitting
Instrument connection: 1/8″ OD precision weld union
Manifold section: use straight and tee ferrule fitting combinations - Customcustom Feedback
A university chemistry department replaced brass fittings with 316L ferrule fittings. As a result, GC-MS baseline drift decreased by 40%, and maintenance frequency was reduced by 60%.
