HGFF Group Co.,Ltd is a Supplier of custom spiral wound gaskets. HGFF engineered spiral wound gaskets are ideal for applications that demand a gasket with the highest-quality flexibility and recovery to maintain a seal even in conditions characterized by fluctuating temperature and pressure.
Composed of a steel centering (outer) ring, a spiral wound sealing strip (filler) and an inner ring made of special steel, spiral wound gaskets are created by winding alternating strips of metal and filler material. Depending on the chemical compatibility requirements, the filler and winding material can be changed.
The spiral wound gasket depends upon the mechanical characteristics of a formed metal spiral strip, rather than the compressive virtues of more traditional gasket materials. This makes it particularly suitable for low or fluctuating bolt loads. The sealing strips, or fillers, are usually graphite, although other materials such as PTFE, Non-Asbestos, ceramic., may be used, the windings are always s/steel
These gaskets are manufactured to International specifications such as ASME, DIN, JIS, BS We also manufacture to customer’s specifications
Spiral wound gaskets are used in Refinery, Petrochemical, Chemical, Steam lines and Process Industries, where they have many advantages over older types of gaskets.
FLANGE STANDARDS SOR, SIO, SIOH, SIR type spiral wound gaskets can be manufactured in accordance with all relevant gasket standards and specifications to suit the following
|ASME/ANSIB16.5||MSS SP44 (ASME B16.47 SERIES A) (AWWA)|
|BS 1560, BS10, BS4504||DIN FLANGES, JIS FLANGES|
|API 605 (ASME B16.47 SERIES B)||FRENCH NF STANDARD|
|FILLERS MATERIALS||MAX. WORKING TEMPERATURE|
|Graphite Mica||350 F (Temperature)|
|Graphite 99.8% purity||1200 C|
|SS304||650 Deg C|
|SS316||800 Deg C|
|SS347||870 Deg C|
|SS321||870 Deg C|
|Monal400||800 Deg C|
|Nickel 200||600 Deg C|
|Titanium||540 Deg C|
|Iconel600||1000 Deg C|
|Inconel625||1000 Deg C|
|Incoloy825||1000 Deg C|
Carbon Steel, Stainless Steel 304,304L, 316,316L,316Ti,321,347, MONEL® 400,Inconel® 600,625,800, Incoloy® 800, 825, Nickel 200, Titanium, Hastelloy, Copper.
Size & Shape as per Prevailing International standards or Customer needs can be produce
|NPS||Inner Ring||Sealing||Element||Outer Ring|
|Inside Dia (d1)||Inside Dia (d2)||Outside Dia (d3)||Outside Dia (d4)|