Industrial Gaskets and Custom Sealing Solutions
We manufacture precision sealing components for pipes, valves, pumps, heat exchangers, and process equipment. With over 20 years of experience and production in Cixi, Ningbo, we supply metallic and non‑metallic designs in standard and custom dimensions. CAD‑to‑production, drawing‑based parts, and branded markings support reliable maintenance and inventory control.
Spiral Wound and Kammprofile Designs
Spiral wound designs combine metal windings with graphite or PTFE fillers to handle vibration, thermal cycling, and pressure spikes. They suit pumps, valves, and plate heat exchangers across varying flange faces and media. Options include inner/outer rings, centering guides, and winding densities matched to flange classes.
Kammprofile (serrated) profiles concentrate load on the sealing area for strong blowout resistance and repeatable recovery. Use graphite facings for heat exposure or PTFE for aggressive chemicals; facing thickness is tuned to flange finish and available bolt load.
RTJ and Metal‑Jacketed Types
RTJ rings in R, RX, and BX profiles deliver metal‑to‑metal sealing for high‑pressure flange connections. Material options include carbon steel, stainless steel grades, and specialty alloys with precise groove fit and traceable quality.
Double metal jacketed types pair a ductile shell with graphite, PTFE, or mica fillers. They tolerate thermal shock, conform to minor flange irregularities, and perform well in steam service and mixed process media. Cross‑sections and thicknesses are tailored to seating stress and service life.
Metallic Flange Seals
Metallic flange seals are built for sustained loads and cyclic stresses at elevated temperatures. Available with serrated faces and overlays to suit mixed service in industrial pipe networks.
PTFE and ePTFE Range
Pure PTFE offers non‑stick surfaces and broad chemical resistance for acids, bases, and solvents, including lined or non‑metallic piping. Reinforced PTFE sheets add strength for larger diameters and higher bolt loads, enabling precise cut parts. Expanded PTFE conforms to flange irregularities and supports low‑torque assembly, including food‑grade options where applicable.
Graphite Seals and Reinforced Sheets
Reinforced graphite sheets with stainless steel or Inconel inserts provide compressive strength and thermal stability with limited oxidation at elevated temperatures. Cut parts from these sheets maintain sealing during thermal cycling. Thicknesses from 1.0–20.0 mm are available to align with EN 1514‑1 and ASME B16.21 where required.
Standards, Sizes, and Customization
We support ASME and EN dimensions as standard and produce non‑standard sizes from CAD models. Profiles are matched to flange configuration, pressure class, and bolt load. Marking, part numbering, and lot traceability are available. Precision inspection covers thickness, hardness, serration patterns, and winding density; performance is validated against the expected pressure and temperature range.
Application Guidance
High temperature or steam: graphite facings or reinforced graphite sheets.
Aggressive chemicals or clean service: PTFE or ePTFE.
High pressure flanges: RTJ profiles matched to groove geometry.
Variable load or cycling: spiral wound or kammprofile designs.
Irregular flange surfaces or low torque: ePTFE or jacketed types with suitable filler.
Industries Served
Oil and gas, natural gas transmission, chemical processing, power generation, metallurgy, and general manufacturing.
FAQ
Q: How do I choose between spiral wound and kammprofile for a heat exchanger?
A: If bolt load is limited but cycling is high, kammprofile often provides more stable recovery. For broader tolerance to flange movement, spiral wound is a strong option.
Q: What documents can you provide with orders?
A: Material certificates, dimensional reports, and marking/traceability details are available on request. Compliance to ASME B16.21 and EN 1514‑1 is supported where applicable.
Q: Can you make non‑standard sizes from a drawing?
A: Yes. We convert DWG/SolidWorks files to production with tight tolerances and can add branded markings and part numbers.
Lead Time and Supply
Manufacturing in Cixi, Ningbo and streamlined logistics support competitive lead times and cost‑effective delivery without compromising quality.
Contact the Gasket Manufacturer Team
Discuss specifications or request a quote with our gasket manufacturer and supplier team. We will recommend materials and profiles suited to your operating conditions.
