08071930772

Change Language

THULIR VACUUM TECHNOLOGIES
GST : 33APQPR6798P1ZI

Vacuum Measuring Instruments

Vacuum Chamber Accessories

Power Supply Machine

DC Power Supply

Coating Unit Spare Parts

Diffusion Pump

Air Cooled Diffusion Pump

Pump Oil

Vacuum Pump Oil

Vacuum Oven

Vacuum Oven

Vacuum Incubator

Vacuum Incubator

Cylindrical Vacuum Chamber

Cylindrical Vacuum Chamber

Multi Tube Joint Adapter

Multi Tube Joint Adapter

RF Magnetron Sputtering System

RF Magnetron Sputtering System

Dosing Pump Maintenance Service

Dosing Pump Maintenance Service

Vacuum Coating Chamber

Vacuum Coating Chamber

Moisture Trap

CF Flange

CF Flange Specification

Equipment Type
Vacuum Flange / CF Flange

Material
Stainless Steel (typically SS 304/304L or SS 316/316L)

Processing Type
CNC Machined

Condition
New

Technology
Conflat (CF) sealing using knife-edge and copper gasket technology

Dimension (L*W*H)
Size varies by model, e.g., DN16CF, DN40CF, DN63CF, etc.

Pressure Output
Up to 1 x 10^-13 mbar (UHV performance)

Application
Ultra High Vacuum (UHV) and High Vacuum systems, Vacuum chambers, Laboratory and research facilities, Semiconductor, Accelerator, and Synchrotron applications

Coating Type
Uncoated or Electropolished, optional passivation

Accessories
Compatible copper gasket, bolt, and nut set (optional)

Bolt Circle Diameter
Varies by flange size (e.g., 34.0 mm for DN16CF)

Mounting Holes
Metric or Imperial tapped or clearance holes as per standard

Sealing Face
Knife-edge for use with copper gaskets

Weight
Depends on model (e.g., ~0.11 kg for DN16CF)

Inner Diameter
Depends on CF size (e.g., 14 mm for DN16CF)

Surface Finish
Ra 0.8 m (vacuum side)

Corrosion Resistance
Excellent (suitable for harsh vacuum applications)

Leak Rate
Less than 1 x 10^-10 mbar l/s

Temperature Range
-196C to +450C (depending on gasket type)

Gasket Material
Oxygen-Free Copper (OFC), Silver-plated, other options available

Flange Type
Rotatable and Non-Rotatable (fixed design options)

CF Flange Trade Information

Minimum Order Quantity
2 Units

Supply Ability
1 Unit Per Week

Delivery Time
1 Week

Sample Available
Yes

Sample Policy
Contact us for information regarding our sample policy

Main Domestic Market
South India

About CF Flange

Product details

Minimum Order Quantity	2 Piece
Finish	Mill Finish
Shape	Round
Usage/Application	Industrial
Material	Stainless Steel

Our reputed entity is engaged in supplying CF Flange.

Advanced Vacuum Sealing Technology

CF Flanges utilize the Conflat (CF) knife-edge sealing method with oxygen-free copper (OFC) or silver-plated gaskets. This configuration is optimal for achieving ultra-high vacuum levels, as the metal-to-metal seal delivers consistent, leak-free performance even in harsh operating conditions.

Flexible Design Choices and Materials

Choose between rotatable and non-rotatable flange designs to suit diverse mounting requirements. Crafted from high-grade stainless steels (SS 304/304L or SS 316/316L), these flanges offer exceptional mechanical stability and resistance to corrosion, supporting long-term use in scientific and industrial systems.

Precision Machining for Reliability

Our CF flanges undergo CNC machining to ensure dimensional accuracy and surface finish (Ra 0.8 m) on vacuum-facing surfaces. Optional electropolishing and passivation treatments are available to further enhance cleanliness and reduce contamination risk, meeting rigorous standards for research and semiconductor processes.

FAQs of CF Flange:

Q: How do I select between rotatable and non-rotatable CF flange types for my application?

A: Rotatable CF flanges simplify bolt alignment and installation, especially useful when equipment orientation may change. Non-rotatable (fixed) flanges are preferred when a stable, fixed connection is necessary. Selection depends on assembly requirements and positioning flexibility needed within your vacuum system.

Q: What is the recommended gasket material for optimum sealing performance?

A: Oxygen-free copper (OFC) gaskets are the standard choice for CF flanges, providing reliable ultra-high vacuum seals. Silver-plated and alternative gasket materials are available for specific chemical compatibility or temperature requirements. Select the gasket based on your operating conditions and desired longevity.

Q: When should I opt for electropolished or passivated CF flange surfaces?

A: Electropolished and passivated finishes are advisable for environments where minimal outgassing and superior surface cleanliness are paramount, such as semiconductor and advanced research facilities. These optional surface treatments reduce contamination risk and enhance corrosion resistance in demanding vacuum systems.

Q: Where are CF flanges typically used in science and industry?

A: CF flanges are widely employed in ultra-high and high vacuum systems, including laboratory and research chambers, semiconductor manufacturing equipment, particle accelerators, and synchrotron beamlines. Their robust performance and reliable sealing make them ideal for demanding vacuum applications.

Q: How does the conflat knife-edge and copper gasket technology ensure leak-tight sealing?

A: The conflat sealing technology employs a knife-edge on the flange face that bites into the gasket material (typically OFC copper), creating a cold-welded metal-to-metal seal. This design achieves extremely low leak rates (less than 1 x 10^-10 mbar l/s), essential for maintaining UHV conditions.

Q: What benefits do stainless steel (SS 304/304L, 316/316L) flanges provide in vacuum systems?

A: Stainless steel CF flanges deliver excellent mechanical strength, corrosion resistance, and chemical stability. These attributes ensure durable performance and extended service life in corrosive and aggressive vacuum environments, supporting reliable operation and reduced maintenance.

Tell us about your requirement