15NB ANSI 300 / 600 Ring Face Gasket, 3mm Red Silicone Rubber

• Complete Range of ANSI B16.20 Ring Face Gaskets made from Red Silicone Rubber.
• Suitable for use with potable water.
• Cut to size in our Australian facilities to suit the precise requirements of ANSI Class 150, 300, 600, 900 or 1500 Flanges.
• No minimum order quantities. Custom Red Silicone Rubber Gaskets also available upon request.

Silicone Rubber Gaskets are a popular choice for sealing flanges in applications with elevated temperatures.

This page lists our range of 3mm thick Red Silicone Gaskets to suit ANSI B16.5 300# and/or 600# flanges in the Ring Face Style. They are quality rubber gaskets, cut to size in Australia, with a maximum operating temperature of 260°C and a range of other performance benefits.

The sections below detail the sizes of this particular gaskets and cover other available sizes, performance capabilities of this material and more.

Sealing Capabilities of Red Silicone Rubber Gaskets.

Our Red Silicone Rubber is a premium-quality, industrial grade Silicone Rubber Sheet with excellent sealing properties. This rubber has excellent temperature resistance, very good electrical insulation properties and wide-ranging chemical resistance. These, and other properties, are expanded on more below:

Food Grade and Potable Water Approved.

Washers, gaskets and seals cut from our Red Silicone Rubber inherit this materials food and potable water certification. Red Silicone Rubber Gaskets from Swift are made from food grade rubber which allow them to be used in sealing equipment that will have direct contact with food (as per FDA and EU standards) and for sealing potable (drinking) water (as per WRAS).

This rubber also carries certifications for several other applications which are detailed more on the attached technical data and over on the specifications tab.

Excellent Heat and Cold Temperature Resistance.

Seals made from our Red Silicone Rubber will withstand ongoing exposure to temperatures between -60°C and +230°C as well as short-term spikes to 250°C.

This is important as most other rubbers (Viton/FKM is the other exception) simply will become brittle and crack well before -50°C and will exhibit serious degradation before 160°C. Silicone doesn't and maintains excellent flexibility and sealing performance. An important attribute for high or low temperature seals.

Excellent Sealing Characteristics.

Silicone Gaskets are often selected because of this rubber excellent sealing performance. All the gaskets featured on this page are made from 60 Shore A Durometer Rubber sheet and have excellent compression, recovery and mechanical strength.

This results in flange gaskets which are very long lasting and offer reliable sealing performance.

Silicone Rubber 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.

These gaskets 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.

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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