MICROFLEX / Microflex Technologies ultra-high purity vacuum seals and gaskets

Direct sourcing of American MICROFLEX / Microflex Technologies metal C-seals, vacuum W-seals, C-Seals Orifice flow restrictors, and modular gas substrate blocks.

MicroSeal metallic C-seals for semiconductor gas lines

High-vacuum C-seals from Microflex Technologies (series MS-028-062, MS-043-062, and MS-052-062) are engineered for surface-mount gas delivery assemblies. The compliant sealing jacket with internal compressor geometry ensures leak-tight performance at reduced bolt torque without flange damage.

Model MS-028 with 0.282 inch outer diameter for compact 1.125 inch modular platforms
Model MS-043 with 0.434 inch outer diameter for high-flow 1.500 inch process substrates
Vacuum arc remelted 316L stainless steel and corrosion-resistant Hastelloy C-22 alloy
Ultraclean wetted interface finish down to 5 microinch Ra with chrome-rich passivation

High-vacuum metallic W-seals and gaskets

Microflex Technologies metallic W-seals (models W2A-031-074, W1A-040-078, and W2A-031-068-H) are tailored for semiconductor vacuum systems requiring exceptional spring-back. Multi-convolution profile geometry accommodates thermal expansion differentials and operational vibrations along lines.

Model W2A-031 featuring 0.31 inch outer diameter fabricated from 316L stainless steel
Model W1A-040 with 0.40 inch outer diameter built for heavy-duty vacuum connection ports
Variant W2A-031-068-H in Hastelloy C-22 for aggressive plasma etching and fluorinated media
Sustained leak integrity across severe cyclic thermal fluctuations without seal relaxation

C-Seals Orifice flow restricting gaskets

Microflex Technologies integrated orifice gaskets (series MS-028-062-XXXX and MS-043-062-XXXX) combine face-seal vacuum sealing with accurate gas flow restriction. This compact configuration eliminates secondary throttling hardware within modular integrated gas manifolds.

Precision drilled orifice bores from 0.012 to 0.180 inch holding tight ±0.0005 inch tolerance
High-precision HP options with calibrated laser drilled bores within ±0.0002 inch variance
Synthetic jewel ruby orifices in SXXXX series offering micro-apertures down to 0.0004 inch
Consistent laminar gas restriction without particulate generation or acoustic flow turbulence

1.125" substrate assemblies, K1S style

Microflex Technologies 1.125 inch substrate assemblies (MSA-028 series) provide primary mounting architecture for compact modular mass flow controllers. The modular layout allows rapid equipment replacement while preserving designated sealing alignment across substrate blocks.

Assembly MSA-028-111 configured for direct mass flow controller connection ports
Dual-port MSA-028-211 and triple-port MSA-028-311 manifolds for distributed process runs
Flange adapters MSA-028-111-F and manifold couplings MSA-028-111-M86 per SEMI F86 rules
Precision CNC alignment fixtures maintaining exact port-to-port spacing without stress

1.5" high-flow substrate assemblies, K1H style

Microflex Technologies 1.5 inch modular substrate assemblies (MSA-043 series) are developed for high-volume gas delivery across 300mm wafer fabrication tools. Enlarged internal conductance minimizes flow restriction across process vacuum and purge lines.

High-flow assemblies MSA-043-115 built for heavy duty mass flow controller integration
Dual-port blocks MSA-043-215 and triple-port distribution manifolds MSA-043-315
Heavy-wall flange adapters MSA-043-115-F tailored for elevated operating line pressures
Cleanroom metallurgy options in 316L stainless steel and corrosion-proof alloy C-22

Corrosion-resistant Hastelloy C-22 and 316L VAR seals

For aggressive process chemicals including chlorine, fluorine, hydrogen bromide, and ammonia, Microflex Technologies manufactures gaskets from Hastelloy C-22 and double-melt 316L VAR stainless steel. These alloys inhibit localized pitting and stress-corrosion cracking.

Vacuum arc remelted 316L VAR stainless steel with tightly controlled low-manganese chemistry
Nickel-chromium Hastelloy C-22 alloy resisting damp halogens and acidic reaction products
Immunity to intergranular degradation under elevated temperature bakeout conditions
Minimal outgassing metrics meeting ultra-high vacuum chamber cleanliness standards

Mounting retainers and CXW conversion hardware

To streamline seal placement within confined gas panel enclosures, Microflex Technologies supplies specialized retainer clips and CXW-028-111 transition gaskets. These components facilitate direct interface matching between C-seal and W-seal component ports on mass flow controllers.

Retainer clips holding metal gaskets in true orientation during vertical component assembly
Conversion gaskets CXW-028-111 allowing seamless mating of C-seal ports to W-seal manifolds
Elimination of seal tilt or pinching during torque application across manifold studs
Comprehensive mechanical edge protection shielding precision sealing surfaces prior to makeup

MicroSeal high-rebound metallic sealing architecture

Microflex Technologies proprietary MicroSeal metal gaskets utilize an engineered compliant interface combined with an internal compressor ring. Unlike conventional rigid metal face gaskets, MicroSeal geometry balances a ductile outer contact jacket with an energetic internal spring core.

During flange bolt make-up, the ductile outer perimeter molds to microscopic seat irregularities, while the internal ring stores elastic compressive energy.

This arrangement yields up to ten times greater elastic rebound than standard metallic gaskets, preventing vacuum seal integrity loss under extreme thermal shock, cycling, and ambient plant vibrations.

Compliance with SEMI PR 3.1, SEMI PR 3.5, and SEMI F86 standards

Microflex Technologies components are engineered in strict compliance with Semiconductor Equipment and Materials International guidelines.

SEMI PR 3.1 and SEMI PR 3.5 establish tight mechanical parameters for contact land profiles, gland depths, and bolt load envelopes across surface-mount C-seal and W-seal geometries.

SEMI F86 governs mounting hole centerlines and flow port spacing for dual-port and triple-port integrated gas delivery substrates. Compliance with these specifications guarantees interchangeability across modular platforms and components from global equipment manufacturers.

Integrated flow restriction with C-Seals Orifice assemblies

The C-Seals Orifice family combines face-seal vacuum containment and precision gas flow restriction into a single compact hardware footprint. Laser-drilled orifices in the MS-028-062-XXXX series feature micro-machined bores held within ±0.0002 inch tolerances, avoiding burrs and flow distortion.

For ultra-low flow delivery, synthetic ruby jewel inserts in the SXXXX series provide orifice diameters down to 0.0004 inch. Embedding the restriction element directly within the seal gland eliminates dead volumes, minimizes tubing joints, and streamlines the modular gas panel layout.

Configuration of 1.125" K1S and 1.5" K1H substrate assemblies

Modular substrate assemblies from Microflex Technologies are provided in two primary semiconductor platforms: compact 1.125 inch (K1S style) and high-flow 1.5 inch (K1H style).

K1S platforms support high-density configurations in etch and deposition gas delivery boxes where footprint minimization is critical. The larger K1H format delivers enhanced conductance for high-volume purge and vacuum exhaust runs on 300mm wafer fabrication tools.

CNC machining of substrate blocks ensures uniform load distribution across the sealing perimeter without inducing torque distortion.

Metallurgical properties of 316L VAR stainless steel and Hastelloy C-22

To deliver chemical inertness across corrosive semiconductor processing chemistries, Microflex Technologies utilizes double vacuum arc remelted 316L VAR stainless steel.

Vacuum remelting suppresses non-metallic inclusions, sulfur, and phosphorus to produce a uniform austenitic grain structure free of micro-voids. For severe halogens including chlorine, fluorine, and hydrogen bromide, gaskets are fabricated from nickel-chromium Hastelloy C-22 alloy.

This chemistry resists pitting and stress cracking, maintaining joint hermeticity during high-temperature bakeout cycles.

Virtual leak mitigation and ultra-clean interface passivation

A major concern in ultra-high vacuum gas delivery systems involves virtual leaks caused by trapped gas pockets within microscopic surface flaws.

MicroSeal gaskets address this challenge through electropolished wetted profiles featuring chrome-rich oxide passivation and surface finishes down to 5 microinch Ra.

During joint compression, the ductile surface layer flows smoothly into the mating hardware profile without gouging the component gland. This eliminates micro-cavities, accelerates system vacuum pump-down, and sustains helium leak rates below 10^-10 atm-cc/sec.

Helium mass spectrometer leak testing of vacuum connections

To verify modular gas delivery integrity across ultra-high vacuum semiconductor systems, helium mass spectrometer leak detection is deployed. Microflex Technologies MicroSeal gaskets sustain baseline leak rates below 10^-10 atm-cc/sec under vacuum chamber and helium spray test modes.

Precision contact lands, controlled surface finishes, and predictable elastic deformation inhibit microscopic capillary leak paths.

This testing reliability guarantees smooth factory acceptance validation of process gas boxes prior to introducing pyrophoric, toxic, or ultra-pure precursor gases into wafer process chambers.

Fastener torque protocols and flange misalignment prevention

Proper makeup of high-purity metal face seals requires strict adherence to fastener torque sequences and load limits.

When bolting modular K1S and K1H surface-mount components to SEMI F86 substrates, technicians utilize calibrated torque drivers following a two-stage cross-pattern sequence: preliminary snugging at forty percent nominal torque followed by final torque verification.

Microflex Technologies retainer clips hold the metal gasket centered within the gland pocket, preventing radial shift, seal pinching, and uneven perimeter deformation during final hardware tightening.

MICROFLEX / Microflex Technologies and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of MICROFLEX / Microflex Technologies and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.