• ASME B16.21 Non Asbestos Gasket
  • ASME B16.21 Non Asbestos Gasket
  • ASME B16.21 Non Asbestos Gasket
  • ASME B16.21 Non Asbestos Gasket
  • ASME B16.21 Non Asbestos Gasket
  • ASME B16.21 Non Asbestos Gasket

ASME B16.21 Non Asbestos Gasket

Material: Non Asbestos
Application: Oil & Gas Pipeline Service
Type: Pipeline Seal
Performance: Seal
Shape: O-Ring
Standard: Standard, Nonstandard
Customization:
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Overview

Basic Info.

Model NO.
G-05
Flange Standard
ANSI B16.5
Delivery
2-4 Weeks
Service
for Oil and Gas Pipeline Sealing
Gasket Standard
B16.21
Pressure
150#
Flange Face
RF
Materials
Gylon 3500/Tealon TF 1590
Transport Package
Sea Shipment
Specification
6"
Trademark
Qishine
Origin
China

Product Description

Company Profile

ASME B16.21 Non Asbestos Gasket


Non-asbestos gasket is made from special non-asbestos heat-resisting fiber, natural rubber compound heating and compression molding. It eliminates asbestos rubber sheet essentially and thoroughly. The maximum dimension reach 2700 x 2700mm.

 

Non-Asbestos Fibre materials are so-called because they fill the gap in the range of gasket materials previously occupied by asbestos. Asbestos, although now known to be a dangerous material, had excellent heat resistance properties, which is why it was utilised so widely in high temperature applications. When asbestos was outlawed, replacement materials were needed; and so these asbestos-free, or non-asbestos, materials were developed to perform the same function, but without the corresponding danger to human health.
 

Certifications
ASME B16.21 Non Asbestos Gasket
ASME B16.21 Non Asbestos Gasket

 


 

These materials are now commonly comprised of aramid fibre (Kevlar) and non-organic fibres, which are in turn blended with different polymers to meet different applications: most commonly nitrile rubber, for fuel and oil resistance. These materials can also be graphite coated for non-stick and steam resistance, mixed with PTFE for excellent chemical resistance, or with EPDM for potable water applications.
 

Common Industries Utilising Non-Asbestos Fibre, Non-asbestos Gasket
 

· Oil and Gas

· Chemical Processing

· Petrochemical Industry

· Process Industry

 

Dimensions of Non-Metallic Flat Gaskets, ASME B16.21 to be used with Raised Face flanges ASME b16.5

 

 Gasket Dimension

ASME B16.21 Non Asbestos Gasket



 

Class 150 to 900 NPS 1/2 to 24

NPS

d1

d2

Class
150

Class
300

Class
400

Class
600

Class
900

1/2

21

48

54

54

54

64

3/4

27

57

67

67

67

70

1

33

67

73

73

73

79

1.1/4

42

76

83

83

83

89

1.1/2

48

86

95

95

95

98

2

60

105

111

111

111

143

2.1/2

73

124

130

130

130.2

165

3

89

137

149

149

149

168

3.1/2

102

162

165

162

162

 

4

114

175

181

178

194

206

5

141

197

216

213

241

248

6

168

222

251

248

267

289

8

219

279

308

305

321

359

10

273

340

362

359

400

435

12

324

410

422

419

457

498

14

356

451

486

483

492

521

16

406

514

540

537

565

575

18

457

549

597

594

613

638

20

508

606

654

648

683

699

24

610

718

775

768

791

838

 

General notes:

· Dimensions are in millimeters unless otherwise indicated.

· d1 = Inside diameter.

· d2 = Outside diameter.

· Dimensional tolerances outside diameter NPS 12 and smaller: +0 / -1.5 mm.

· Dimensional tolerances outside diameter NPS 14 and larger: +0 / -3.0 mm.

· Dimensional tolerances inside diameter NPS 12 and smaller: ± 1.5 mm.

· Dimensional tolerances inside diameter NPS 14 and larger: ± 3.0 mm.

· Thickness (t) specified by customer.

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Manufacturer/Factory
Type of Ownership
Limited Company
International Commercial Terms(Incoterms)
FOB, CIF, CFR