Precision Ultra-High Purity Fittings
Ultra-High Purity Fittings CNC machined, electropolished and assembled in an ISO cleanroom for semiconductor, pharma and biotech lines. Every fitting is helium leak tested and fully traceable.
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6 hours
Quote Turnaround
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10+ years
Review Experience
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2300+
Engineer Clients
Custom High Purity Fittings for Gas and Fluid Lines
Ultra-high purity fittings are precision connectors that keep gas and fluid transfer contamination-free and leak-proof in semiconductor, pharmaceutical and biotechnology production lines, where a single particle can compromise performance.
DEK produces them with precision CNC machining, orbital welding, electropolishing and ISO cleanroom assembly. Unlike standard suppliers, we maintain full traceability and microscopic cleanliness, from prototypes to large-scale production.
Why Engineers Choose DEK
2300+ engineers work with DEK on clean gas and fluid systems. Here is what makes our fittings dependable.
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Precision & Cleanliness
Contamination-free processing for zero leakage, smooth flow paths and consistent performance, held to stringent purity standards on every fitting.
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Custom Design Capability
Tube sizes, surface finish and material grade are engineered to your system, so each fitting integrates cleanly into complex fluid or gas lines.
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Certified QA & Testing
ISO 9001:2015 quality system, SEMI and ASME BPE standards, helium leak testing, surface roughness inspection and full traceability documentation.
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Fast, Cost-Effective Supply
Optimized workflow and precision automation give short lead times and competitive prices, from rapid prototyping to volume runs with global delivery.
Engineer-Reviewed Quotes
We don't use automated quote tools. Mechanical engineers with 10+ years of experience review every drawing, accounting for tolerances and post-processing, and return an accurate quote within 6 hours.
UHP Fittings Materials & Processes
From 316L and nickel alloys to PEEK and fluoropolymers, each fitting combines the right material, process and inspection.
Ultra-High Purity Fittings vs. Standard Fittings
Choose ultra-high purity fittings when a single particle or leak can compromise your process. For general systems, see our custom flanges and fittings.
| Criteria | This ProcessUltra-High Purity Fittings | Standard Fittings |
|---|---|---|
| Cleanliness | Microscopic, particle-free | Standard |
| Traceability | Full, material and process | Not standard |
| Internal surface | Electropolished | Per drawing |
| Assembly | ISO cleanroom | Not required |
| Compliance | SEMI, ASTM, ASME BPE | Per drawing |
| Leak test | Helium leak testing | Per drawing |
| Choose when | One particle matters | Purity not critical |
Industries That Depend on Purity
Semiconductor fabs, pharmaceutical plants, biotech labs and aerospace programs rely on our fittings, each with its own materials and documentation.
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Aerospace
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Medical
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Automotive
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Robotics
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Semiconductor
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Electronic
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Telecom
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Drone & UAV
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Energy
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Oil & Gas
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Marine
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Industrial Equipment
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Construction
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Agriculture
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Consumer Products
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Military & Defense
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Mining
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AerospaceNon-flight-critical brackets, cabin hardware and fittings under AS9100D, in 7075 aluminum, Ti-6Al-4V and Inconel 718, with FAI.Learn More -
MedicalInstrument shafts, handles and cannulas in 316L stainless, titanium and PEEK under ISO 13485, with lot traceability as standard.Learn More -
AutomotivePrototype and low-to-mid-volume sensor housings, valve bodies and shafts in aluminum, 4140 and 4340 alloy steel, stainless and brass.Learn More -
RoboticsJoint housings, harmonic drive flanges and gripper fingers in aluminum and hardened steel, with 5-axis milling in one setup.Learn More -
SemiconductorChamber components, wafer handling fixtures and vacuum flanges in 6061 aluminum, 316L, PEEK and Kovar, with burr-free edges.Learn More -
ElectronicConnector bodies, heat sinks, RF shields and precision pins in aluminum, brass and copper, held to ±0.01 mm on contact features.Learn More -
TelecomWaveguide components, filter housings and RF enclosures in aluminum and copper alloys, with silver or nickel plating for conductivity.Learn More -
Drone & UAVMotor mounts, gimbal frames and landing gear fittings in 7075 aluminum, titanium and magnesium to cut weight without losing stiffness.Learn More -
EnergyBattery end plates, busbars, inverter housings and fuel-cell fittings in aluminum, copper and stainless, machined flat and burr-free.Learn More -
Oil & GasValve components, manifold blocks, downhole tool parts and flanges in 4140, 17-4 PH, duplex 2205 and Inconel, with hardness specs.Learn More -
MarinePropeller shafts, pump parts and deck hardware in 316 stainless, bronze and aluminum bronze, chosen first for corrosion resistance.Learn More -
Industrial EquipmentGripper plates, linear guide mounts, cam followers and machine frames in aluminum and steel, with fixtures kept on file for repeats.Learn More -
ConstructionStructural brackets, anchoring hardware and hydraulic fittings in mild steel, alloy steel and aluminum, zinc plated or powder coated.Learn More -
AgricultureGearbox housings, shafts, sprayer nozzle bodies and sensor mounts in cast iron, steel and stainless for abrasion and moisture.Learn More -
Consumer ProductsKnobs, handles, enclosure parts and audio hardware where the machined surface shows, anodized, bead blasted or polished to sample.Learn More -
Military & DefenseOptical mounts, enclosures and accessory rails in aluminum, steel and titanium, with material certification and FAI reports.Learn More -
MiningWear plates, bushings, crusher components and hydraulic fittings in hardened alloy steel, bronze and stainless for dust and vibration.Learn More
Fitting Types and Purity Challenges
From connectors to valve seats, each part type carries its own purity risk. Here is what we machine and how we control it.
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Precision Connectors
PEEK connectors that keep their integrity under pressure and heat for analytical instrumentation and gas systems.
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Valve Seats & Seals
Low-friction, low-leaching PEEK seats and seals for reliable, contamination-free performance in high-stress service.
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Nickel Alloy Valves
Fittings and valves in nickel alloys such as Inconel for chemical vapor delivery and corrosive gas systems.
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PFA Tubing & Fittings
Smooth internal surfaces prevent particle buildup and keep fluid flow consistent in wet benches and chemical delivery.
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Electropolished Flow Paths
Ultra-smooth internal surfaces on 316L fittings reduce particle generation in semiconductor gas lines.
Purity Challenges We Handle
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Particle Contamination
Electropolishing, cleanroom assembly and inspection keep fittings particle-free for semiconductor wafer fabs, where contamination compromises product quality.
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Corrosive Gases & Chemicals
Inconel, PTFE and PVDF resist acids, bases, solvents and corrosive gases, keeping fittings stable in aggressive chemical service.
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High-Temperature Service
PTFE heat resistance, PFA thermal stability and nickel alloy strength maintain purity in high-temperature, corrosive fluid handling.
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Leak-Free Integrity
Helium leak testing on every fitting confirms leak-free performance in aerospace and high-purity gas delivery, where consistent flow matters.
Certified Quality for Every Fitting
Every job runs through the same certified quality system, measured and documented.
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AS9100DAerospace Quality Management System
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ISO 9001:2015Quality Management Standard
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ISO 13485Medical Devices Quality Management
Materials for High Purity Fittings
We machine 316L stainless steel, nickel alloys and high-performance plastics. Match the material to your gas or chemical.
Engineering Plastics
Need another alloy or polymer? Ask our engineers.
All MaterialsHow to Order Ultra-High Purity Fittings
Get an Accurate Quote for UHP Fittings
Metal or plastic, simple or complex: send your drawings and get an accurate, engineer-reviewed quote within 6 hours.
- Drawings reviewed by 10+ year engineers
- 316L, nickel alloys, PEEK and fluoropolymers
- Helium leak tested, fully traceable
- Prototypes to large-scale production
- Packed, labeled and shipped worldwide
Ready to Scale Your Project?
Get started with a stable process and controlled quality. Let's discuss your project.
