15NB Table D & E (AS 2129) Full Face Gasket, 1.5mm Alapin

• General-Purpose Flange Gaskets for medium temperatures and pressures.
• Very good compatibility with oils, hydrocarbons, lubricants, fuels, water and steam.
• Used for sealing steam to 255°C, other media to 340°C.
• Cut in our Australian factory to the precise requirements of AS 2129 Table D and/or Table E flange specifications.

Alapin Flange Gaskets are an economical, versatile solution for sealing many common fluids, gases and media at medium temperatures and pressures. This type of gasket has excellent resistance to oils, lubricants, fuels, water & steam and has a maximum, continuous, temperature rating of 340°C for sealing fluids & gases, 255°C for sealing steam.

The gaskets featured on this page are manufactured in our Australian facilities to suit the size requirements of AS 2129 Table D and/or Table E Flanges. Read on for more information about the different sizes and additional info on Alapin gasket material.

Flange Gaskets to Suit AS2129 Sizing Info.

The gaskets featured on this page are the full-face style of rubber flange gasket. These gaskets take up the full face of the flange, with holes cut for the bolts. Both ring and full-face gaskets can be used on these flanges depending on particular requirements and user preferences.

AS 2129 Flanges are most commonly found in either AS 2129 Table D or AS 2129 Table E which is why gaskets for both are listed here. That said, there are quite a few other tables made and gaskets for these (e.g. Table A, C, F, H) can also be produced upon request.

Why are some Table D and Table E Gaskets the same size while others aren’t?

The AS 2129 Flange Specification is like many others (e.g. ANSI 150) in that many of the smaller sized flanges (and consequently, gaskets) are the same across tables. In the AS 2129 Spec, gaskets made to suit flanges with a nominal bore of up to 80NB are the same no matter if the flanges are listed as Table D or Table E. After this, sizes do differ.

The table below provides more specifics on this.

Alapin Cut Pipe Flange Gaskets Information.

Alapin is a high quality, industrial-grade compressed non-asbestos fibre (CNAF) gasket material. It is made from a combination of mineral fibres and genuine DuPont Kevlar Aramid Fibres which are bound with a Nitrile Butadiene Rubber (NBR) binder.

The resulting gasket sheet exhibits excellent flexibility, compressibility, sealing performance and recovery. These features, and more, are expanded on below:

Green	If operating temperatures and pressures fall within this field, a technical examination is normally unnecessary.
Blue	For steam sealing applications, a technical evaluation is suggested.
Black	If operating temperatures and pressures are within this “open“ field, a technical examination is always necessary.

Good Temperature Resistance.

Like all gasket fibre sheets, the temperature resistance of Alapin is linked to the pressure of the sealing application and the type of media being sealed. That said, a rough guide for this material is:

Maximum Temperature
Continuous, Non-Steam: 340°C.
Short-Term, Non-Steam: 375°C.
Continuous, Sealing Steam: 255°C.

Wide-Ranging Chemical Compatibility.

Alapin Industrial Gasket Material is resistant a wide range of chemicals, fluids and media. The list below is by no means comprehensive, rather just a summary of the most common types of media that Alapin is known to be compatible with:

• Water.
• Steam.
• Oils.
• Fuel.
• Kerosene.
• Salt Solutions.
• Natural Gas.
• Lubricants.
• Refrigerants.
• Moderate organic and inorganic acids.

Suitable for Medium Sealing Pressures.

Maximum operating pressure is directly linked to the temperature of the application (as illustrated on the above Alapin pT Diagram). The figures below should be considered in this context.

Maximum Pressure
Continuous: 12 MPa (up to about 170°C, less after this temperature is reached).

Excellent Sealing Characteristics.

In addition to its ability to withstand elevated temperatures & pressures, as well as a wide range of fluids and gases, Alapin has excellent sealing characteristics. Some of these are summarised in the table below with more information available on our Alapin Gasket Material Technical Data Sheet.

Full Face Flange Gaskets to suit AS 2129 Table D and Table E Size Info Tables.

AS 2129 Table D Gaskets Sizing.

All Dimensions below are given in millimeters (mm).

AS 2129 Table E Gaskets Sizing.

All Dimensions below are given in millimeters (mm).