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Starflex Sealing India Pvt. Ltd
 
Starflex Products - Semi metallic Gaskets
Products --> Semi Metallic --> Spiral Wound --> Style OGI
 
STYLE OGI
Spiral Wound Gasket with Outer and Inner Rings.

Usage
Flat and raised faced diameter flanges up to and inclusive of Class 2500.
 
  MATERIAL MAXIMUM TEMPERATURE
Fillers Starflon/PTFE 260 °C
Stargraf 500 °C
Metals SS 304 537 °C
Sheet size SS 316 L 815 °C
 
Technical benefits
1. Profile suited for cyclic loading.
2. Outer ring helps in centering gasket around bolts.
3. Inner/ Outer ring provides a compression stop.
4. Prevents inward buckling.
5. Recommended for high pressure/ temperature applications.
 
Design parameters
 
GASKET THICKNESS MAXIMUM INSIDE DIMENSION RECOMMENDED FLANGE WIDTH RECOMMENDED COMPRESSED THICKNESS

3 mm (0.125")

Up to 20" 1" 0.09"/ 0.10"
3 mm (0.125") 20" to 40" 3/4" 0.09"/ 0.10"
4.5 mm (0.175") Up to 40" 1" 0.125"/ 0.135"
4.5 mm (0.175") 40" to 60" 1" 0.125"/ 0.135"
4.5 mm (0.175") 60" to 70" 7/8" 0.125"/ 0.135"
4.5 mm (0.175") 70" to 75" 3/4" 0.125"/ 0.135"
6.35 mm (0.250") 90" 1" 0.18"/ 0.20"
7.24 mm (0.285") 165" 1" 0.20"/ 0.22"
 
Tolerance capabilities as per ASME B16.20
 
GASKET DIAMETER INSIDE DIAMETER OUTSIDE DIAMETER
Up to 200 mm (8") ± 0.4 mm (± 0.016") ± 0.8 mm (± 0.03")
250 to 610 mm (10" to 24") ± 0.8 mm (± 0.03") ± 1.6 mm (± 0.06")
660 to 864 mm (26" to 34") ± 0.8 mm (± 0.03") ± 1.6 mm (± 0.06")
915 to 1524 mm (36" to 60") ± 1.25 mm (± 0.05") ± 1.6 mm (± 0.06")
 
APPLICABLE STANDARDS
1. ASME B16.20 for ASME B16.5 and 16.47 series A and series B flanges.
 
Design Factors
m = 3
y = 10,000 psi
 
Recommended Surface Finish
125 - 250 rms

 

 
 
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