Gate Valve Sealing Ring

Our metal seat sealing rings are core wear-resistant spare parts for hard-sealed gate valves, specially manufactured for high temperature, high pressure and harsh abrasive working conditions. Adopting surfacing or integral alloy forming technology, these metal seat rings achieve metal-to-metal bubble-tight shutoff, perfectly solving leakage issues under severe service media. Multiple alloy material grades are available, with custom dimensions and OEM processing supported as per drawings.

Core Advantages

Premium Wear-Resistant Alloy Materials Main options include Stellite 6 / Stellite 12 cobalt-based alloy, 316 stainless steel, duplex stainless steel, hardfaced alloy overlay. Excellent anti-scuffing, anti-abrasion and anti-erosion performance against particle-laden media like mud, ash and crude oil.

1. Ultra Wide Temperature & Pressure Resistance Suitable for working temperature from -196℃ up to 650℃, withstand high pressure rating Class 150 to Class 2500. Stable sealing performance under high-temperature steam, hot oil, flue gas and sour corrosive medium containing H₂S.

2. Precision Machined Sealing Surface Fine grinding and lapping treatment on sealing contact surface, ultra-low surface roughness to ensure tight metal-to-metal fit. No soft material swelling or aging failure compared with soft seat seals.

3. Long Service Life & Low Maintenance High hardness alloy greatly extends service cycle under frequent opening and closing operations. Replaceable split seat ring design allows fast on-site maintenance without overall valve disassembly, cutting operation costs effectively.

Application Scope

Hard-sealed gate valves, API oilfield gate valves, power plant steam pipeline valves, metallurgy high-temperature flue gas valves, chemical high-pressure corrosive pipeline valves, mining slurry conveying valves.