loading
reading
writing
saving
searching
17x Mixed NOS Flexitallic SWG Gaskets 316L/FG CGI 300# B16.20 1.5-3" - $60 (Snowflake)
QR Code Link to This Post
This is a Bulk Lot of genuine Flexitallic Spiral Wound Gaskets designed for Industrial Gasket and flange sealing needs in Chemical Processing, Oil & Gas, and Power Generation applications. These are high-quality, semi-metallic 316L Stainless Steel with Flexible Graphite (FG) filler gaskets, Style CGI (with inner and outer rings). They are designed for ASME B16.20 and Class 300 Flange Gasket joints, excelling in High Temperature and high-pressure Pipe Fitting environments. The spiral construction provides excellent resilience, blowout resistance, and sealing under load cycling.
All 17 units are NOS New Old Stock—unused, uninstalled, with some cosmetic blemishes from long-term storage (see photos). No original packaging.
Breakdown by Size:
- 6 x 3" Class 300 Full Face 316L/FG: Ideal for 3" NPS flanges.
- 6 x 2" Class 300 Full Face 316L/FG: Perfect for 2" NPS flanges.
- 5 x 1.5" Class 300 Full Face 316L/FG: Suited for 1.5" NPS flanges.
Key Features:
- Material: 316L SS windings for corrosion resistance; FG filler for thermal stability up to 842°F (450°C).
- Construction: Spiral wound with concentric grooves for superior sealing; inner ring (raised lip) prevents buckling and aids centering.
- Compatibility: For flat face, raised face, or tongue-and-groove flanges in Class 300 systems.
- Standards: Meets ASME B16.20 specs for spiral wound gaskets.
This lot would work well for certain maintenance teams, resellers, or spare parts inventory.
Specifications
General Specs for All Gaskets:
- Type: Spiral Wound, Style CGI (with stainless steel inner and outer rings)
- Material: 316L Stainless Steel (windings and rings); Flexible Graphite (FG) filler
- Thickness: 1/8" overall (0.125"); 3/16" (0.1875") at center due to inner ring
- Temperature Range: -400°F to 842°F (-240°C to 450°C), depending on application
- Pressure Rating: Up to Class 300 (720 PSI at ambient temp, per ASME)
- Filler Density: Standard for FG (compressible for tight seals)
Size-Specific Specs:
3" Class 300 Full Face 316L/FG (Qty: 6):
- Outer Diameter: 8 1/4" (8.25")
- Bolt Holes: 8 holes, each 7/8"
(0.875") diameter
- Bolt Circle Diameter: 6 5/8"
(6.625") from center of one hole to
opposite
- Weight: 1 lb 2.35 oz each
- Inner Ring ID: Approx. 3.25"
(standard for 3" NPS)
2" Class 300 Full Face 316L/FG (Qty: 6):
- Outer Diameter: 6 1/2" (6.5")
- Bolt Holes: 8 holes, each 3/4"
(0.75") diameter
- Bolt Circle Diameter: 5" from
center of one hole to opposite
- Weight: 12.1 oz each
- Inner Ring ID: Approx. 2.25"
(standard for 2" NPS)
1.5" Class 300 Full Face 316L/FG (Qty: 5):
- Outer Diameter: 6 1/8" (6.125")
- Bolt Holes: 4 holes, each 3/4"
(0.75") diameter
- Bolt Circle Diameter: 4 1/2" (5.5")
from center of one hole to
opposite
- Weight: 12.9 oz each
- Inner Ring ID: Approx. 1.75"
(standard for 1.5" NPS)