Custom DIN Standard Metal Outer Ring Spiral Wound Gasket PTFE Exhaust Pipe Gasket Metric PTFE Tri-Clamp Gasket

The outer ring type metal spiral wound gasket is a type of gasket widely used in the field of industrial sealing. Its structure and performance design enable it to perform well under high temperature, high pressure and complex working conditions.

• Petrochemical industry: reactors, heat exchangers, and pipe flanges.
• Power industry: Sealing of steam systems such as boilers and steam turbines.
• Nuclear industry: radiation and corrosion resistant scenarios.
• Oil refining and natural gas: flange connection seals for pipelines, valves, and pumps.
• Chemical industry: Sealing of highly corrosive media.

Mainly used for flat flange (FF) or raised face flange (RF), the outer ring design helps positioning and prevents installation deviation.

• High temperature: long-term working temperature can reach 700°C.
• High pressure: the withstand pressure is usually more than 20MPa.
• Alternating load: suitable for scenes with frequent temperature or pressure fluctuations.

Multi-layer sealing structure: Metal belts (304/316 stainless steel, titanium alloy) and non-metallic filling materials (graphite, PTFE, mica) are alternately wound. The outer ring provides mechanical support and prevents layer loosening.

Excellent sealing: Combines "soft-hard" double sealing to adapt to small defects on flange surfaces with a high compression rebound rate.