| Customization: | Available |
|---|---|
| Standard: | ANSI, DIN, GB, JIS, GOST |
| Type: | Welding Flange |
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The seal mechanism is a knife-edge that is machined below the flange's flat surface. As the bolts of a flange-pair are tightened, the knife-edges make annular grooves on each side of a soft metal gasket. The extruded metal fills all the machining marks and surface defects in the flange, yielding a leak-tight seal. The CF seal operates from 760 torr (103 mbar) to < 1 x 10-13 Torr (< 1.3 x 10-13 mbar), and within the temperature range -196° C to 450° C (depending on material). Flange sizes in North America are normally referenced by their outside diameter (O.D.). However, in Europe and much of Asia, the nominal internal diameter (nominal I.D.) of the largest tube that can be welded to a bored flange is usually referenced in their nomenclature.
ConFlat flanges are offered in four versions:
Both Fixed and Rotatable flanges are available with your choice of through (clearance) holes or tapped holes.
Available sizes: 11/3" ("mini"), 23/4", 41/2", 6", 8", 10", 12", 131/4", 14" and 161/2" O.DMaterial
Flanges 304ss (1.4301) or 316EFR (1.4429 ESU)
Gaskets OFE Copper
Bolts 300 stainless steel and 300ss silver Plated
Fastening
Bolt type Hexagonal or 12-point head
Nut type Hexagonal or two-hole plate nuts
Size .312-24 UNF or M8
Torque 15 lb-ft or 20 Nm
Vacuum Range 1x10-13 Torr or below 10-13 mbar
Features
Complies with ISO 3669
UHV rated to 1x10-13 Torr mbar
High temperature rated to 450°C
Rotatable and non-rotatable geometries
OFE Copper or optional Fluorocarbon-based fluoroelastomer (FKM / FPM) elastomer gaskets
Tapped or clearance bolt holes
Compatible with other manufacturers' Conflat® knife-edge flanges
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