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Actually works better than O-ring face seal when you're dealing with system vibration or thermal cycling, since the metal-on-metal 74° cone suface doesn't degrade like elastomers over time, and we've seen it hold steady at 5000 PSI even after 30,000 presure cycles in test rigs.
Medium carbon steel with galvanized surface treatment gives about 72 hours of neutral minimum — that's decent for mobile equipment but don't bury these underground for years without checking the coating integrity, and the CNC machining keeps thread pitch within ±0.002" which matters most when you're torquing into aluminum manifolds.
It's basically a JIC 74° cone design cut form steel stock, so it handles -20°C to 120°C continuous — below that the galvanizing gets brittle but the steel itself is fine to -40°C, but we usually don't recommend it for cryogenic lines or anything above 150°C where the zinc starts off-gassing.
ISO 9001 covers the shop floor but every lot gets its own COA with hardness and plating thickness data, though you'll want to check the 6000 PSI rating assumes proper tube wall thickness because a thin-wall 1/4" tube will burst before the fitting does.
Most buyers go with the metric thread version for European equipment since the 24° cone L-series adapters aren't interchangeable here, and you'll need to specify whether you're mating it to a swivel nut or a fixed body — lead time is about 15-25 days for JIC stuff (depending on quantty and plating color).
We usually have stock on sizes -4 through -16 in NPT and BSP threads, but the -20 and -24 sizes are made-to-order runs — roughly 50 units or so is the MOQ for those larger bores, so plan ahead if you're working on a 1-1/4" tube system.
We can do as low as 50 pieces per size for standard options, but custom orders usually start around 200 pieces. Just let us know what you need.
Yes, absolutely — we include the ISO 9001 certificate and can also supply material test reports or inspection records on request. Just mention it when you place the order.
They're rated for -20°C to 120°C, so continuous use at 120°C is fine. The galvanized coating keeps corrosion in check even at the high end.
Custom orders usually take 15-25 days, same as standard ones. If you need a mix of metric, BSP, NPT, or JIC threads, we can handle it within that window.
Yes, we pack them in sealed plastic bags with anti-rust treatment, then into sturdy cartons. They'll stay in good shape for months in dry storage.
Outstanding experience from start to finish. The shipping was incredibly fast, arriving well ahead of the estimated delivery window, which was a pleasant surprise. The packaging was secure and professional, ensuring all components were perfectly protected in transit. Regarding the quality, the fittings exhibit exceptional craftsmanship. The machining is precise, the threads are clean and sharp, and the material feels robust and durable, exactly as one would expect for high-pressure applications. The finish is uniform and of a high standard. Customer service was equally impressive; the communication was clear, prompt, and very helpful when I had a pre-purchase question. Overall, a very smooth and satisfactory transaction. The product appears to be manufactured to exacting standards, and the entire process—from ordering to delivery—was handled with great efficiency and care. I am confident in the performance of these components based on their physical attributes and the professionalism of the seller. Highly recommended for anyone in need of reliable hydraulic connectors.
