VCR® Metal Gasket Face Seal Fittings
VCR face seal fittings offer the high purity of a metal-to-metal seal, providing leak-tight service from vacuum to positive pressure. The seal on a VCR assembly is made when the gasket is compressed by two beads during the engagement of a male nut or body hex and a female nut.

Specifications Pressure Ratings Temperature Ratings Materials • Glands, bodies, nuts • Gaskets End Connections • Type • Size Configurations

Up to 11 200 psig (771 bar) Up to 1000°F (537°C) 316, 316L, 316 VAR stainless steels 316L stainless steel, nickel, copper Weld, NPT, male straight thread, Swagelok tube fitting 1/16 to 1 in.; 6 to 18 mm Glands, bodies, welded assemblies, straights, elbows, tees, crosses, reducers, adapters

More Information
Download the Swagelok VCR Metal Gasket Face Seal Fittings catalog.
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Features

• Standard surface finish on glands and bodies is a roughness average of 10 µin. (0.25 µm) Ra.
• No "virtual leak" zones.
• Test port at two locations for easy leak testing.
• Side-load retainer gasket for easy installation and minimal clearance for removal.
• Precision manufactured gasket for maximum performance.
• Female threads are silver plated to prevent galling, ensure easy, consistent assembly.
• Markings identify manufacturer, material, and heat code.

Typical VCR Assemblies

1. Female nut. 2. Gland. 3. Side-load retainer gasket. 4. Gland. 5. Male nut.

6. Female nut. 7. Gland. 8. Gasket. 9. Body.

High-Flow Connections— "H" Type VCR Face Seal Fittings
"H" type VCR connections are compatible with 1/4 in. VCR connections and are designed for use with Swagelok high-flow diaphragm valves and gas regulators.

Testing
The VCR fitting design has been helium leak tested to a maximum leak rate of 4 × 10^–9 std cm³/s with silver plated and copper gaskets and to a maximum leak rate of 4 × 10^–11 std cm³/s with unplated gaskets.

Cleaning
Components are cleaned to remove oil, grease, and loose particles. For more information, see Swagelok Standard Cleaning and Packaging (SC-10).

Ultrahigh-Purity Processing
A variety of VCR face seal glands and bodies is available with controlled surface finishes, electropolished, and specially cleaned to meet ultrahigh-purity system requirements. For more information, see Swagelok Ultrahigh-Purity Process Specification (SC-01).

Options and Accessories

• Split-nut assemblies
• Flow restrictors
• Lock and tag devices
• Side-load installation tool and tray