15NB ANSI 150 Ring Face Flange Gasket, 1.5mm Topgraph 2000

• High Performance Pipe Flange Gaskets for elevated temperatures.
• Manufactured from Topgraph 2000; a flexible, high-temp graphite material with a blend of synthetic fibres.
• Used for sealing steam to 300°C, other media to 500°C.
• Cut to size in our Australia facilities and available in 150, 300, 600, 900 & 1500 pound sizes as standard.

Topgraph 2000 Flange Gaskets are often selected for medium to high temperature sealing applications. They are widely used for exhausts, automotive and steam pipe flanges as well as many other situations that require a material capable of maintaining flexibility and sealing performance in elevated temperatures. 

ANSI B 16.5 Flanges and the associated ANSI B 16.21 Gaskets are widely used in a variety of industries around Australia. The following sections provide more information on the ring gaskets listed on this page, the capabilities of Topgraph 2000 as a gasket material, and the individual gasket sizes for each standard, ring-face table gasket up to 600NB.

Topgraph 2000 Flange Gaskets to Suit ANSI Size Info.

This page lists ring type gaskets. This style of gasket is designed to sit inside the bolts of the flanges and is known by quite a few names, including:

• RF Flange Gaskets.
• IBC Gaskets (Inner Bolt Circle).
• Raised Face Gaskets (as they are often used on raised face type flanges).
• Ring Face Gaskets.

The gaskets featured on this page are all cut to suit the size requirements of ANSI B16.21 and used with ASME B16.5 Flanges. This specification contains 5 different flange tables listed below:

• ANSI 150 (Class 150)
• ANSI 300 (Class 300)
• ANSI 600 (Class 600)
• ANSI 900 (Class 900)
• ANSI 1500 (Class 1500)

Ii many nominal pipe sizes (NB), the Class 300 and Class 600 call for the same size gasket. The same is true with Class 900 and Class 1500. When this is true, a single gasket is offered that will fit both (denoted on the list as Class 300 / 600). When the specification calls for different size gaskets, individual options for each are listed.

What this means in practice is…

ANSI 150
Does not share it’s sizing with any other flange table at any nominal bore.

ANSI 300
Shares it’s sizing with ANSI 600 up to 80NB (3”). For pipes larger than this, individual gaskets are offered as the sizes differ.

ANSI 600
Shares it’s sizing with ANSI 300 up to 80NB (3”). For pipes larger than this, individual gaskets are offered as the sizes differ.

ANSI 900
Shares it’s sizing with ANSI 1500 up to 65NB (2.5”). For pipes larger than this, individual gaskets are offered as the sizes differ.

ANSI 1500
Shares it’s sizing with ANSI 900 up to 65NB (2.5”). For pipes larger than this, individual gaskets are offered as the sizes differ.

Topgraph 2000 Pipe Flange Gaskets Information.

1	If operating temperatures and pressures fall within this field, a technical examination is normally unnecessary.
2	If your operating temperatures and pressures are within this field, a technical examination is recommended.
3	If operating temperatures and pressures are within this “open“ field, a technical examination is always necessary.

This quality compressed non-asbestos fibre (CNAF) material is made from a combination of graphite and synthetic fibres. It is a specialised grade of gasket paper that is made using a revolutionary process that allows it to offer the flexibility and high temperature sealing performance of graphite with the strength and pressure resistance of synthetic fibres.

Gaskets made from Topgraph 2000 exhibit several performance benefits, some of which are detailed below:

Excellent Temperature Resistance.

Topgraph 2000 is suitable for use with steam up to 300°C. In many other areas of application, temperatures of over 500°C are possible. Like all gasket materials, maximum operating temperature is related to both sealing pressure and the type of media being sealed.

The pT diagram included on the right gives a rough breakdown of this relationship between pressure and temperature. More information is included on our Topgraph 2000 Technical Data Sheet.

Numerous Certifications and Approvals.

Topgraph 2000 been approved for use with a variety of different media. Some of these certifications and approvals include:

• DIN-DVGW Permit No. NG-5123AU0381 for use in sealing gas.
• BAM approval in accordance with UVV 28, oxygen (VGB 62) tested up to 130 bar and 95°C for gaseous oxygen.
• KTW-recommended for water sealing.
• Meets the technical requirements of BS 7531:2006 Grade AX.
• TA-Luft (Clean Air) Certificate acc. VDI 2440.

High Degrees of Flexibility, Load Bearing Capacity and Minimal Embrittlement.

Topgraph 2000 material impresses with its good handling in combination with its very high level of load bearing capacity and minimal embrittlement at temperatures up to 300°C.

These properties offer the gasket a high degree of resistance to damage during fitting and under operation, prevents the loss of bolt load and the formation of cracks at high temperature.

Ring Face Flange Gaskets to suit ANSI B16.5 Flanges Size Tables.

Class 150 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

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Class 300 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

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Class 600 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

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Class 900 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

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Class 1500 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

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