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Hi-Tech sealing

gaskets

Thermally-expanded graphite is used to make specific flexible material in a form of sheets. This material inherited from graphite its high-temperature and chemical resistances, and has additional properties such as flexibility, pliability and endurance in compression and extension.  It’s a high-performance material for gaskets and packing. 

Flange gaskets

Кольца графитовые силур
Сальниковая набивка-силур
прокладки-фланцевые-силур

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Flange Gaskets

Flange standards:

DIN EN 1759-1-2005 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 1: Steel flanges, NPS 1/2 to 24

 

DIN EN 1092-1 Berichtigung 1-2014 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges

 

ANSI/ASME B 16.47a Large Diameter Steel Flanges, NPS 26 through NPS 60

 

ANSI/ASME B 16.5 Pipe Flanges and Flanged Fittings 
 

from - 240°C

to + 600°C

up to 40 MPa                          

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Sealing Gaskets with Corrugated Metal Core (PUTGm)

APPLICATION:

 

Heat exchange equipment

 

• Sealing of hardware (apparatus) flanges.  High assembly durability, elastic restorability of the gasket under repeated temperature differences, compensation of distortions;

 

• Sealing of floating unit of heat exchanger In order to manufacture the gasket with narrow sealing area we use corrugated metal core with shorter pitch (distance between two crests);

 

• Protection of a flange against corrosion and product’s laydown. The gasket with variable section is covering all flange face and keeping width of sealing zone within designed number.

Columns and vessels (tanks)

 

• Sealing of flange up to DN 5000;

 

• High assembly durability.

Recommendations:

 

• for flanges with defects, distortion and flatness fault;

 

• for flanges which are under repeated temperature differences and temperature extremes. For   equipment with frequent start and stop period;

 

• for flanges exposed to thermal shock and dynamic effects.

 

DIN EN 1514-4-1997 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 4: Corrugated flat or grooved metallic and filled metallic gaskets for use with steel flanges

 

ANSI/ASME B 16.21 Nonmetallic Flat Gaskets for Pipe Flanges

 

DIN EN 12560-4-2001 Flanges and their joints - Gaskets for class-designated flanges - Part 4: Corrugated, flat or grooved metallic and fillet metallic gaskets for use with steel flanges

 

Possibility of transportation in minimized packing size.

Centering on the flange is in according with specified project location. (Photo of the gasket’s packing)

 

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Spiral Wound Gaskets (SNP)

EN 1514-2

 

DIN EN 1514-2-2014 Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges

 

ANSI/ASME B 16.20 Metallic Gaskets for Pipe Flanges

 

DIN EN 12560-1-2001 Flanges and their joints - Gaskets for class-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts

APPLICATION:

 

 

This is the most common class of gasket for application in all industries all around the world.

Recommendations:

 

• Reliable seal up to DN 600, for media with high penetrating power;
 

• For sealing of flange joints with smooth sealing surfaces. For substances with hazard category 1, 2 and 3

 

 

 

 

Maximum strength of the gasket was increased (do not break if dropped)

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Sealing Gaskets of Thermally Expanded Graphite (PUTG)

APPLICATION:

 

• Sealing of standard flange joints in apparatus and pipelines.

- technology of reliable sealing of hardware (apparatus) flanges on heat-exchangers with working pressure up to 10 MPa. There is no need in demounting of tube bundle;

 

-sealing for cap and cover of air-cooling unit

ANSI/ASME B 16.21 Nonmetallic Flat Gaskets for Pipe Flanges

 

DIN EN 1514-1-1997 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts

 

DIN EN 12560-1-2001 Flanges and their joints - Gaskets for class-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts

 

Recommendations:

 

• Sealing of standard flange joints including those under vibration, thermal shocks and impulsive blows;

 

• For sealing of flange joints with smooth sealing surfaces. For substances with hazard category 1, 2 and 3.

 

Flange sealing normative documents:

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Based on reinforced thermal-expanded graphite foil;

Based on expanded polytetrafluorethylene;  (expanded PTFE)

Based on aramid fibers;

Based on ceramic fibers;

Based on carbon fibers;

Based on natural fibers.

Gland Packing

The packing are intended for sealing of gland units of pumps, valves, mixers and other movable joints in such  media as superheated steam, oil, heavy and light oil products, gas and liquid hydrocarbons, acids, alkalis, melted and dissolved salts, organic substances, liquid and gas oxygen, etc

OPERATING CHARACTERISTICS:

Operating characteristics of gland packing, depending on fiber material, are within following ranges: 

up to 50 MPa   

from - 200°C to + 650°C

MAIN GROUPS OF BRAIDED GLAND PACKING:

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Graphite sealing rings

Sealing rings and their sets are used in chemical, petrochemical, refining, gas, nuclear and thermal power industries to seal gland units of valves which performing reciprocating movements, and for sealing of the process equipment housing.

OPERATING CHARACTERISTICS: 

Operating characteristics of sealing rings and rings’ sets, depending on ring type, are within following ranges:

up to 40 MPa      

from - 240°C

to + 650°C

SIZE STANDARD OF SEALING RING

The size of graphite sealing rings and rings’ sets are in compliance with gland chamber size of typical shut-off and control valves from Russia or any other country. At the customer’s request Sealur Ltd in compliance with customer’s drawings or sketches can manufacture sealing rings which has irregular size.

 

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CONTACTS:

35, 1905 Goda Str.,Perm, 614014, RUSSIA
 
 info@sealur.ru
Phone: +7 (499) 705 94 90

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Sealing and packing materials made of thermal-expanded graphite.

 

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