Graphite gasket

Product Description: Graphite gasket

1. Graphite gaskets are cut or punched from pure graphite plates or metal (toothed plates, flat plates, mesh) reinforced graphite plates. They have many excellent sealing properties, such as thermal stability, self-lubrication, corrosion resistance, no aging, no brittleness, etc. They can be used stably for a long time under harsh working conditions and require very little maintenance. The lining material can be selected from different metal sheets. The types can be selected from no edging, inner edging, outer edging, inner and outer edging. Graphite cutting gaskets are punched or cut from pure graphite plates. They have good corrosion resistance , high/low temperature resistance, good compression resilience and high strength . Various circular and complex geometric gaskets are widely used in pipes, valves, pumps , pressure vessels, heat exchangers, condensers, generators , air compressors, exhaust pipes , refrigerators, etc.

2. Types of metal wound gaskets: basic metal wound gaskets, metal wound gaskets with outer rings, metal wound gaskets with inner rings, metal wound gaskets with inner and outer rings, heat exchangers (with ribs), and special-shaped metal wound gaskets.

The metal spiral wound gasket (basic type) is made of high-quality SUS304, SUS316 ("V" shape or "W" shape) metal strips and other alloy materials and soft materials such as graphite, asbestos, polytetrafluoroethylene, and asbestos-free materials, which are overlapped and spirally wound. The metal strips are fixed at the beginning and end by spot welding.

( 1 ) Metal strip material

Use cold rolled steel strips with thickness of 0.15mm~0.25mm, such as 08F, 0Cr13, 0Cr18Ni19Ti, 0Cr18Ni9Ti, 00Cr18Ni10, 0Cr18Ni12Mo2Ti, 00Cr17Ni14Mo2, etc., or the other thickness can be determined by negotiation between the supply and demand parties.  

The metal strip is a preformed V-shaped or W-shaped narrow strip. The surface should be smooth and clean, without any defects such as roughness, cracks, scratches, pits and rust spots.

The hardness value of stainless steel is HV≤200 D. The width of the general steel strip is 3.2mm, 4.5mm.8mm

( 2 ) Non-metallic strip materials

A Non-metallic filling is special asbestos tape, flexible graphite tape, polytetrafluoroethylene tape, non-asbestos fiber tape, ceramic fiber and mica tape, etc. The thickness of the tape is 0.3-1.0mm.

The loss on ignition of special asbestos must be ≤25%

Chloride ion content of non-metallic belt ≤100PPM

Recommended operating temperature and pressure for various media and non-metallic belts

E. The width of the general steel strip is 3.2mm, 4.5mm.8mm. Operating temperature: Graphite metal spiral wound gasket operating temperature -200-850℃ ; asbestos metal spiral wound gasket operating temperature -200-500℃ ; PTFE metal spiral wound gasket operating temperature -200-260℃ .

Technical features:

a. Wide range of applicable working conditions. It can withstand high temperature, high pressure and adapt to ultra-low temperature or vacuum conditions. By changing the material combination of the gasket, the chemical corrosion problem of various media on the gasket can be solved.

b. Strong stress compensation capability. In the workstations with frequent temperature and pressure fluctuations, the sealing performance is stable and reliable.

c. Excellent sealing performance.

d. The surface accuracy requirements for the flange seal that contacts the gasket are not high.

eEasy to install, low gasket preload pressure.

 Consultation hotline:

+86 18301137796

Category:

Graphite seals

Keywords:

High-strength graphite gasket / wholesale high temperature and high pressure resistant flange sealing gasket / flexible graphite reinforced composite gasket