SpiroNat

SpiroNat

We manufactur “SpiroNat” spiral-wound gaskets and are committed to providing our customers requirements in the most expeditious manner possible.

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How to Order

  • NPS

    Nominal Pipe Size

  • PSI

    ANSI Pressure

  • Style

     

  • Material

    Winding and Filler Material

  • Series or Thickness

     

Examples

  • Standard API 601
    NPS 3
    PSI 150#
    Style XR
    Material 304ss/Natfite
    Series/Thickness -
  • Large Diameter
    NPS 36
    PSI 150#
    Style XR
    Material 304ss/Natfite
    Series Series A
  • Winding Only (SX)
    NPS 2 1/8 x 3 1/8
    PSI -
    Style SX
    Material 304ss/Natfite
    Thickness 1/8 thick

Thickness available on custom made gaskets 1/8", 3/16", and 1/4

  • Spiralwoud Style Code
    SX Winding Only
    SXI Winding with Inner Ring
    XR Winding with Guide Ring
    XRI Winding with Guide and Inner Ring
    XR-LP Low Pressure Winding with Guide Ring
    HL Winding with Loop Centering Guide
    XH * Winding Only
    XMCR Winding with Special (steel wound) Inner Ring

    * Manhole or Handhole gasket (specify shape)

  • Non-metallic filler winding material
    Natfite (Non-Asbestos)
    Teflon
    NS Teflon
    Glass Filled Teflon
    Ceramic
    GTB Grafoil
    GTA Grafoil
  • Stainless Steel Metal Winding Materials
    340ss
    304L
    316L
    321ss
    347ss
    410ss
    Alloy 20
    Hastelloy B
    Hastelloy C
    Inconel 600
    Inconel 625
    Inconel 750
    Monel 400
    Nickel 200
    Titanium

Style and Color Code

  • Stainless Steel Color Code
    304ss Yellow
    304L Yellow
    316L Green
    321ss Turquoise
    347ss Blue
    410ss No Color
    Alloy 20 Black
    Hastelloy B Brown
    Hastelloy C Beige
    Inconel 600 Gold
    Incoloy 800 White
    Monel 400 Orange
    Nickel 200 Red
    Titanium Purple
  • Filler Material Color Code
    Natfite (Aramid Fiber) Pink
    Teflon White
    N.S. Teflon White
    Glass Filled Teflon No Color
    Ceramic Light Green
    GTB Grafoil Gray
  • Spiralwound Style Code
    SX Winding Only
    SXI Winding with Inner Ring
    XR Winding with Guide Ring
    XRI Winding with Guide and Inner Ring
    XR-LP Low Pressure Winding with Guide Ring
    HL Winding with Loop Centering Guide
    XH * Winding Only
    XMCR Winding with special(steel wound) Inner Ring
* Manhole or Hanhole gasket (specify shape)
Style XR and XRI Spiralwound gaskets are manufactured in accordance with all relevant gasket standards per flange designations of ASME/ANSI B16.5, B16.20, B16.47, (series A and B API 605 and MSS-SP44)

Temperature Limits

All technical advise and recommendation are rendered by Seller free of charge. While based on data believed to be reliable, seller assumes no responsibility.

Weight

NPS Nominal Pipe Size
  • 150#
    NPS 150#
    1/2 1 oz
    3/4 1-1/2 oz
    1 2 oz
    1 1/4 2 oz
    1 1/2 2-1/2 oz
    2 3-1/2 oz
    2 1/2 5-1/2 oz
    3 6 oz
    4 8-1/2 oz
    5 9-1/4 oz
    6 10 oz
    8 1 lb
    10 1-1/4 lb
    12 1-1/2 lb
    14 2-1/4 lb
    16 2-1/2 lb
    18 2-3/4 lb
    20 3-1/2 lb
    22 3-3/4 lb
    24 3-3/4 lb
    30 6-1/2 lb
    36 8-1/2 lb
    42 10-1/2 lb
    48 12-1/2 lb
  • 300#
    NPS 300#
    1/2 1-1/2 oz
    3/4 2-1/2 oz
    1 2-1/2 oz
    1 1/4 3 oz
    1 1/2 4 oz
    2 4-1/2 oz
    2 1/2 6-1/2 oz
    3 7 oz
    4 9-1/2 oz
    5 12 oz
    6 1 lb
    8 1-1/2 lb
    10 1-3/4 lb
    12 2-1/4 lb
    14 3-1/2 lb
    16 4-1/4 lb
    18 5 lb
    20 6 lb
    22 6-3/4 lb
    24 7-1/2 lb
    30 10-1/2 lb
    36 12-1/2 lb
    42 14-1/2 lb
    48 16-1/2 lb
  • 600#
    NPS 600#
    1/2 1-1/2 oz
    3/4 2-1/2 oz
    1 2-1/2 oz
    1 1/4 3 oz
    1 1/2 4 oz
    2 4-1/2 oz
    2 1/2 6-1/2 oz
    3 7 oz
    4 14 oz
    5 1 lb
    6 1-1/2 lb
    8 2 lb
    10 3-1/8 lb
    12 4-1/4 lb
    14 4-1/2 lb
    16 5 lb
    18 6 lb
    20 7-1/2 lb
    22 8-1/4 lb
    24 9 lb
    30 12 lb
    36 15-1/2 lb
    42 17 lb
    48 19 lb

Tolerance Tables

  • Standard Inner Ring Tolerance
    Size I.D. O.D.
    + - + -
    1" to 3" + .0312 - .000 + .0312 - .0312
    4" or larger + .0625 - .000 + .0625 - .0625
  • Special Inner Ring Tolerance
    Size I.D. O.D.
    + - + -
    1" to 3" + .0156 - .000 + .0312 - .000
    4" or larger + .0312 - .000 + .0625 - .000
  • XR Gaskets Tolerance Table
    (Gasket with container outer ring)
    Size I.D. O.D.
    + - + -
    1/2" to 8" + .0156 - .000 + .0312 - .0312
    10" to 24" + .0312 - .000 + .0312 - .0312
    26" to 60" + .0312 - .000 + .0625 - .0625
  • Guide Rings Tolerance
     
    Size I.D. O.D.
    + - + -
    1/2" to 8" + .0312 - .312 + .000 - .0312
    10" to 24" + .0625 - .0312 + .000 - .0312
    26" to 60" + .0625 - .0625 + .000 - .0312
  • Table of Standard Tolerance
    For Special Gaskets
    Size I.D. O.D.
    + - + -
    Up to 1" + .0156 - .000 + .000 - .0312
    1" to 24" + .0312 - .000 + .000 - .0312
    24" to 36" + .0468 - .000 + .000 - .0625
    36" to 60" + .0625 - .000 + .000 - .0625
  • Compression Table
     
    Gasket Thickness Maximum Flange Width Optimum Compression Thickness
    0.125 3/4" .090-.100
    0.175 3/4" .125-.135
    0.25 3/4" .180-.200
    0.285 3/4" .200-.220
Note: 125-250 AARH is the optimum flange finish (Concentric or phonographic)