Gasket - Binzhou Double Peaks Graphite Sealing Materials https://www.bz-graphite.com/en/product-category/gasket-en/ High quality graphite sealing materials Mon, 25 Jun 2018 08:48:50 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://www.bz-graphite.com/wp-content/uploads/2017/12/ico-152x152-100x100.png Gasket - Binzhou Double Peaks Graphite Sealing Materials https://www.bz-graphite.com/en/product-category/gasket-en/ 32 32 Non-metallic gasket https://www.bz-graphite.com/en/product/dp3500/?utm_source=rss&utm_medium=rss&utm_campaign=dp3500 Thu, 29 Mar 2018 03:56:17 +0000 http://bz-graphite.com/product/dp3500/ General Features

Non-metallic gaskets are cut from a variety of non-metallic plates. The variety of materials can be applied to a variety of media, pressure, temperature and other complex conditions.

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Widely used in static sealing parts of equipment, process piping, etc. in many industries such as petroleum, chemical industry, electric power, gas, nuclear energy, aerospace, automobile, shipbuilding and food.

Main products

Main Products Item Type Temperature Application
DP3520 PTFE gasket 260°C Plugs, seals, and lubricating materials that work in a variety of aggressive media
DP3540 Non-asbestos gasket 550°C Widely used in petrochemical, power, automotive, marine and other fields
DP3560 rubber cushion sheet 200°C Widely used in petrochemical, power, automotive, marine and other fields
High-quality rubber sheet properties
Items Units Execution standard EPDM rubber CR Neoprene SBR

FM Fluor Rubber NBR Nitrile Rubber
Color Black/White Black/White Black/White/Red Black full color
Hardness Shao A degree GB/T531 70 65 70 70 70
Tensile Strength MPA GB/T528 8 18 6 8 15
Elongation at break % GB/T528 300 400 500 200 400
Compression Sets % GB/T7759 28 32 25 25 33
Volume change rate (3# oil soaked 100°C * 72h) % GB/T1690 40% 15%
thickness available mm GB/T5574 1mm-80mm 1mm-80mm 1mm-80mm 1mm-80mm 1mm-80mm
Provide surface 1-80mm glossy
2mm and above fabrics		 1-80mm glossy
2mm and above fabrics		 1-80mm glossy
2mm and above fabrics		 1-80mm glossy
2mm and above fabrics		 1-80mm glossy
2mm and above fabrics
Temperature use range -40°C~150°C -30°C~120°C -25°C~100°C -30°C~250°C -30°C~120°C

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]]> Metal gasket https://www.bz-graphite.com/en/product/dp3400/?utm_source=rss&utm_medium=rss&utm_campaign=dp3400 Thu, 29 Mar 2018 03:56:01 +0000 http://bz-graphite.com/product/dp3400/ General Features

Metal gaskets are machined from carbon steel, stainless steel, copper, aluminum and other metal materials.

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Applicable to the sealing of pipes, containers, flanges, valves, etc. under high temperature and high pressure conditions such as chemical, nuclear, and electrical power.

Main products

Main Products Item Name Description Application
DP3410 Metal flat mat Apply nominal pressure 25.4 MPa Usually applied to high pressure steam, gas, solvent and other devices, such as high pressure vessels, high pressure valves, etc.
DP3420 corrugated spacer Working pressure 25.4 MPa Used for sealing parts of bonnets, globe valves, check valves, etc.
DP3430/40 toothed pad/corrugated pad Apply nominal pressure 25.4 MPa Mainly used for high-temperature, high-pressure pipe flange sealing, sealing parts of valve covers such as gate valves, globe valves, check valves, etc.
DP3450/60 Triangle/Wedge (lens) Apply nominal pressure 32 MPa Usually applied to high pressure steam, gas, solvent and other devices, such as high pressure vessels, high pressure valves, etc.
DP3470/80 Octagonal/Oval Pads Working pressure 25.4 MPa Usually applied to high pressure steam, gas, solvent and other devices, such as high pressure vessels, high pressure valves, etc.

gasket material and applicable temperature

Material Material Code Code Hardness Hardness Temperature/°C
HBW HRB
soft iron D 90 56 450
08/10 08/10 120 68 425
0Cr13 410S 140 82.5 540
0Cr18Ni9 304 160 83 700
00Cr19Ni10 304L 160 83 450
0Cr17Ni12Mo2 316 160 83 700
00Cr17Ni14Mo2 316L 150 83 450
0Cr18Ni10Ti 321 160 83 700
0Cr18Ni11Nb 347 160 83 600
Cu T3 45 — 300
Al L3 32-45 — 200

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]]> Metal covered gasket https://www.bz-graphite.com/en/product/dp3300/?utm_source=rss&utm_medium=rss&utm_campaign=dp3300 Thu, 29 Mar 2018 03:55:39 +0000 http://bz-graphite.com/product/dp3300/ General Features

Any sealing material such as flexible graphite, non-asbestos, and PTFE is coated in stainless steel, copper, carbon steel, and other metal materials. The filler material gives the gasket good resilience, and the coating prevents the gasket from being damaged by the erosion of the medium.

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Thickness: 2-8mm
Nominal diameter: φ10～φ2000mm

Usage

It is mainly used for the sealing of flanges of pumps, valves, heat exchangers, etc. in the metallurgy, refining and chemical industries.

Dimensional Deviation

Diameter limit deviation (unit: mm)

nominal diameter DN Outer diameter Intermediate diameter thickness
D d
≥300-1200 0 -1.5 +1.5 0 ±0.2
>1200-3000 0 -2.0 +2.0 0 ±0.3

Main products

Cladding metal materials DP3320 Graphite DP3330 PTFE plate DP3340 Ceramic Fibers
Tinned steel sheet DP3321 DP3331 DP3341
Galvanized steel sheet DP3322 DP3332 DP3342
304 DP3323 DP3333 DP3343
316 DP3324 DP3334 DP3344
08F DP3325 DP3335 DP3345
T3 DP3326 DP3336 DP3346
L3 DP3327 DP3337 DP3347

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]]> Graphite composite gasket https://www.bz-graphite.com/en/product/dp3200/?utm_source=rss&utm_medium=rss&utm_campaign=dp3200 Thu, 29 Mar 2018 03:54:38 +0000 http://bz-graphite.com/product/dp3200/ General Features

The graphite composite gasket is cut from the graphite composite plate. It is thermally stable, self-lubricating, corrosion-resistant, radiation-resistant, non-aging, and brittle. It can be used stably for a long time under harsh working conditions.

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]]> Product Specifications

Nominal diameter:φ20～φ2100mm

Usage

Widely used in petroleum, chemical, power, gas, nuclear, aerospace, textile, metallurgy, marine, machinery and other industrial equipment flanges, valves, reactors, pumps, pressure vessels, heat exchangers, condensers, power generation Machine, air compressor, exhaust pipe, refrigerator, etc.
seal.

Applications

Working temperature: -200°C~600°C
Working pressure: ≤11MPa

Technical Parameters

performance Indicators
Sprint Panel Composite Slab Composite
Compressibility (%) 15~35 35-55
Rebound rate (%) ≥20 ≥10
Temperature loss (%) 450°C ≤1.0 ≤1.0
600°C ≤10 ≤10
Absorption (%) 0# diesel ≤20
20th mechanical lubricant ≤20
Leakage Rate (cm3/s) ≤1.0×10-3
Note: Graphite density after composite is 1.0-1.3g/cm3

Main products

Item Name Item Name
DP3201 Stainless steel 316/0.1mm smash graphite composite mat DP3231 Normal carbon steel 0.2~0.25mm smash graphite composite mat
DP3202 Stainless steel 304/0.1mm spur graphite composite mat DP3241 Metal mesh reinforced graphite composite mat
DP3203 Stainless Steel 316/0.05mm Graphite Composite Pad DP3251 Glass fiber reinforced graphite composite mat
DP3204 Stainless steel 304/0.05mm flat graphite composite mat DP3261 Polyester film reinforced graphite composite mat
DP3221 0.2~0.25mm smashed graphite composite mat for tin plate DP3271 Wire reinforced graphite composite mat

thickness deviation

Unit: mm

Specifications Thickness Limit deviation Difference in thickness of the same sheet
≤500 0.5-1.0 ±0.10 ≤0.10
>1.0~2.0 ±0.15 ≤0.15
>2.0 ±0.20 ≤0.20
>500 0.5-1.0 ±0.10 ≤0.15
>1.0~2.0 ±0.15 ≤0.20
>2.0 ±0.20 ≤0.25

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]]> Metal spiral wound gasket https://www.bz-graphite.com/en/product/dp3100/?utm_source=rss&utm_medium=rss&utm_campaign=dp3100 Thu, 29 Mar 2018 03:54:15 +0000 http://bz-graphite.com/product/dp3100/ General Features

A metal spiral wound gasket is a semi-metal flat gasket made by spirally winding a metal belt and a non-metal belt. Its characteristics are: compression, good elasticity; multi-channel seal and a certain degree of self-tightening function; less sensitive to the flange sealing surface defects, do not bond flange sealing surface; easy to center, convenient disassembly Can partially eliminate the effects of pressure, temperature changes and mechanical vibration; can maintain excellent sealing performance in a variety of harsh conditions such as high temperature, low temperature, high vacuum, impact vibration and other cyclic alternation.

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]]> Specifications

Thickness: 2.5, 3.2, 4.5, 6.5, 8mm, etc.
Nominal diameter: φ10～φ3000mm

Type

Basic, In-Ring, Locating Ring, Inner Ring, and Positioning Ring

Usage

Widely used in petroleum refining, petrochemical, electric power, gas, nuclear power, aerospace, textile, metallurgy, shipbuilding, and pharmaceutical industries. It is used to seal the flange joints of pipelines, valves, pumps, pressure vessels, condensers, heat exchangers, manholes, and hand holes.

Applications

Packing Bands for Temperature and Pressure

Fill Belt Type Usage temperature/°C Maximum working pressure/MPa
Flexible graphite -196~600 30
PTFE -196～260 10

Plates, Codes, and Applicable Temperatures of Common Metal Strips

Grade Code Working Temperature/°C
06Cr19Ni10

304

-196~700
022 Cr19Ni10 304L -196-450
06Cr17Ni12Mo2 316 -196~700
022Cr17Ni12Mo2 316L -196-450
06Cr18Ni11Ti 321 -196~700

Technical Parameters

Parameter Unit Value
Compression ratio % 18~30
Rebound rate % ≥17
Stress relaxation rate % ≤15
Seal Leakage Rate cm3/s ≤1.2×10-5

Installation Instructions

Before installation, the flange surface must be carefully cleaned with a brush to ensure that there is no foreign material on the flange surface. Ensure that the flange surface is flat, free from distortion, and scratches that do not affect sealing. Clean the fasteners to ensure that there are no foreign objects between and around the fasteners.
Make sure the mating flange is aligned during installation.
When tightening bolts, the gasket should be evenly stressed and tightened symmetrically.

In the installation process, observe whether the seal surface of the gasket has a radial penetration flaw that affects the seal, and replace the gasket if it is present.

Type Code Applicable flange sealing surface pattern
Basic A Sink surface
In-band loop B Convex surface
With locating ring C Face and Full Plane
With inner ring and locating ring D Face and Full Plane

Gasket Type and Flange Selection

Dimensional Measurement Range

Diameter Deviation of Inner and Outer Diameter of Sealing Element, Inner Ring and Positioning Ring (Unit: mm)

Nominal Size Seal Element Inner Ring, Positioning Ring
D2 D3 D1 D4
≤200 +0.5 -0.8 +0.5 -0.8
250-600 +0.8 -1.3 +0.8 -1.3
650-1200 +1.5 -2.0 +1.5 -2.0
1300-3000 +2.0 -2.5 +2.0 -2.5

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