15NB ANSI 900 / 1500 Ring Face Gasket, 3mm Red Silicone Rubber

SKU: SWM000132P06V0053
Availability: Cut to Order, Ships in 2-3 W/Days.
$1.49
INC. GST
$1.34
EX. GST

BULK DISCOUNT RATES

All Bulk Prices Below Are Quoted Including GST.
Buy 1 - 9 and pay only $1.49 each
Buy 10 - 25 and pay only $1.27 each
Buy 26 - 50 and pay only $1.20 each
Buy 51 - 100 and pay only $1.14 each
Buy 101 or above and pay only $1.08 each
  • 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 B16.5 900# and/or 1500# 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.

ANSI 150 ButtonANSI 300 ButtonANSI 150 ButtonANSI 900 ButtonANSI 1500 Button

Class 150 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

Flange Nominal
Bore
Imperial
Short-Hand
Gasket ID Gasket OD Matches
Table
15NB 1/2" 21 48 -
20NB 3/4" 27 57 -
25NB 1" 33 67 -
32NB 1 1/4" 42 76 -
40NB 1 1/2" 48.4 86 -
50NB 2" 60.3 105 -
65NB 2 1/2" 73 124 -
80NB 3" 89 136.5 -
90NB 3 1/2" 102 162 -
100NB 4" 114.3 175 -
125NB 5" 141.3 197 -
150NB 6" 168 222 -
200NB 8" 219 279 -
250NB 10" 273 340 -
300NB 12" 324 410 -
350NB 14" 356 450 -
400NB 16" 406 515 -
450NB 18" 457 550 -
500NB 20" 508 605 -
600NB 24" 610 715 -

Return to Sizing Table Menu.

Class 300 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

Flange Nominal
Bore
Imperial
Short-Hand
Gasket ID Gasket OD Matches
Table
15NB 1/2" 21 54 ANSI 600
20NB 3/4" 27 67 ANSI 600
25NB 1" 33 73 ANSI 600
32NB 1 1/4" 42 83 ANSI 600
40NB 1 1/2" 48.4 95 ANSI 600
50NB 2" 60.3 111 ANSI 600
65NB 2 1/2" 73 130 ANSI 600
80NB 3" 89 149 ANSI 600
90NB 3 1/2" 102 165 -
100NB 4" 114.3 181 -
125NB 5" 141.3 216 -
150NB 6" 168 251 -
200NB 8" 219 308 -
250NB 10" 273 362 -
300NB 12" 324 422 -
350NB 14" 356 486 -
400NB 16" 406 540 -
450NB 18" 457 597 -
500NB 20" 508 654 -
600NB 24" 610 775 -

Return to Sizing Table Menu.

Class 600 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

Flange Nominal
Bore
Imperial
Short-Hand
Gasket ID Gasket OD Matches
Table
15NB 1/2" 21 54 ANSI 300
20NB 3/4" 27 67 ANSI 300
25NB 1" 33 73 ANSI 300
32NB 1 1/4" 42 83 ANSI 300
40NB 1 1/2" 48.4 95 ANSI 300
50NB 2" 60.3 111 ANSI 300
65NB 2 1/2" 73 130 ANSI 300
80NB 3" 89 149 ANSI 300
90NB 3 1/2" 102 162 -
100NB 4" 114.3 194 -
125NB 5" 141.3 241 -
150NB 6" 168 267 -
200NB 8" 219 320.7 -
250NB 10" 273 400 -
300NB 12" 324 457 -
350NB 14" 356 492 -
400NB 16" 406 565 -
450NB 18" 457 613 -
500NB 20" 508 683 -
600NB 24" 610 791 -

Return to Sizing Table Menu.

Class 900 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

Flange Nominal
Bore
Imperial
Short-Hand
Gasket ID Gasket OD Matches
Table
15NB 1/2" 21 64 ANSI 1500
20NB 3/4" 27 70 ANSI 1500
25NB 1" 33 79 ANSI 1500
32NB 1 1/4" 42 89 ANSI 1500
40NB 1 1/2" 48.4 98 ANSI 1500
50NB 2" 60.3 143 ANSI 1500
65NB 2 1/2" 73 165 ANSI 1500
80NB 3" 89 168 -
90NB 3 1/2" N/A N/A -
100NB 4" 114.3 206 -
125NB 5" 141.3 248 -
150NB 6" 168 289 -
200NB 8" 219 359 -
250NB 10" 273 435 -
300NB 12" 324 498 -
350NB 14" 356 520 -
400NB 16" 406 575 -
450NB 18" 457 638 -
500NB 20" 508 699 -
600NB 24" 610 840 -

Return to Sizing Table Menu.

Class 1500 Ring Gasket Sizes.

All Dimensions below are given in millimeters (mm).

Flange Nominal
Bore
Imperial
Short-Hand
Gasket ID Gasket OD Matches
Table
15NB 1/2" 21 64 ANSI 900
20NB 3/4" 27 70 ANSI 900
25NB 1" 33 79 ANSI 900
32NB 1 1/4" 42 89 ANSI 900
40NB 1 1/2" 48.4 98 ANSI 900
50NB 2" 60.3 143 ANSI 900
65NB 2 1/2" 73 165 ANSI 900
80NB 3" 89 175 -
90NB 3 1/2" N/A N/A -
100NB 4" 114.3 210 -
125NB 5" 141.3 254 -
150NB 6" 168 283 -
200NB 8" 219 352 -
250NB 10" 273 435 -
300NB 12" 324 520 -
350NB 14" 356 580 -
400NB 16" 406 641 -
450NB 18" 457 705 -
500NB 20" 508 755 -
600NB 24" 610 901 -

Return to Sizing Table Menu.

Colour Red
Insertion None
Hardness (ASTM D2240) 60 Shore A (+/- 5) Durometer
Continuous Operating Temperature -60°C to +230°C
Short-Term Operating Temperature 250°C
Brittle Point -80°C
Elongation at Break (ASTM D412) 340%
Tear Strength (ASTM D624) 14.2 N / mm
Tensile Strength (ASTM D412) 1146 PSI
Potable Water WRAS Approved for Potable Water
at Temperatures up to 85°C
FDA Compliant As Per 21 CFR 177.2600
(Suitable for Direct Food Contact)
EC Food Safe Compliant with EC 1935/2004 
(Suitable for Direct Food Contact)
RoHS and REACh Both Fully Compliant
FMVSS 302 Meets Part 571 Flammability Test
SKU SWM000132P06-900-1500