KF40 Stainless steel Vacuum centering ring with O-ring = FKM Viton (10 pcs pack)

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01. Superior Vac fitting
◈  A. Flange Blind Cap Blanket
◈  B. Elbow adapter
◈  C. Tee adapter
◈  D. Cross adapter
◈  E. PVC x KF adapter
▷  F. MNPT x KF adapter
♢  KF16
♢  KF25
♢  KF40
▷  G. FNPT x KF adapter
♢  KF16
♢  KF25
♢  KF40
02. Normal Vac fitting
◈  A. Blank Cap
▷  B. Bellow KF/ISO
♢  i. KF16
♢  ii. KF25
♢  iii. KF40
▷  C. Centering Ring
♢  KF16
♢  KF25
♢  KF40
♢  KF50
♢  ISO LF63
♢  ISO LF80
♢  ISO LF100
♢  ISO LF160
♢  ISO LF200
♢  ISO LF250
◈  D. Conical Reducer KF/ISO
▷  E. Flange Clamp
♢  KF16 Clamp
♢  KF25 Clamp
♢  KF50 Clamp
♢  ISO-K Clamp
◈  F. Metric x KF adapter
▷  G. KF x FNPT adapter
♢  KF16
♢  KF25
♢  KF40
▷  H. KF x MNPT adapter
♢  i. KF16
♢  ii. KF25
♢  iii. KF40
▷  I. KF x FBSP adapter
♢  KF16
♢  KF25
▷  J. KF x MBSP adapter
♢  KF16
♢  KF25
♢  KF40
▷  K. KF x VCR adapter
♢  KF25
▷  L. KF flange nipple
♢  KF16
♢  KF25
♢  KF40
♢  KF50
▷  M. O-ring
♢  KF25
▷  N. Tee, Cross, Elbow KF
♢  KF16
♢  KF25
♢  KF40
♢  KF50
♢  ISO LF
▷  P. Vacuum Valve
♢  Ball Valve
♢  Bellow Valve
♢  Vent Valve
◈  Q. KF feedthruogh
◈  R. PVC Hose x KF adapter
03. Digital Instrument
▷  04. Hantek Auto Diagnostic
♢  1008C set
♢  6074BE set
04. RF cable adapter
◈  A. Tools
◈  B. Consumables
05. Fab Surplus
◈  Component
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KF40 Stainless steel Vacuum centering ring with O-ring = FKM Viton (10 pcs pack)
Lot of 10 pcs KF40 Centering ring with FKM (viton) O-ring
Centering ring is
made of Stainless steel 304
O-ring is made of
FKM (Viton)
material
FKM working temperature -20C to 200C / -15F to 400F
Hardness 70-75
Color -
Green
Good chemical and wear resistance
Centering Ring KF-40 Vacuum Fittings, ISO-KF Flange Size NW-40, Stainless Steel & O-ring
These KF-40 Centering Ring vacuum fittings follow ISO-KF standards and have a flange size of NW-40. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel with O-Ring.
O-Ring Material Reference Guide
Material
Recommended Use
Not Recommended For
Mechanical Properties
Buna-N
(Nitrile)
Standard: 70 Durometer Black
Temperature Range: -35F to 250F
Least Expensive / Readily Available
Silicone Greases/Oils
Water
Petroleum Oils / Fuels
Ethylene Glycol Fluids
Ketones (MEK)
Halogenated Hydrocarbons
Auto / Aircraft Brake Fluids
Strong Acids
Sunlight, Ozone, Weathering
Good Wear Resistance
Good Compression SetResistance
Good Short-Term Resilience
Good Permeation Resistance
Viton
FKM FPM
(Fluorocarbon Type A)
Standard: 75 Durometer Green
Temperature Range: -15F to 400F
Vacuum
Most Acids/Chemicals
Halogenated Hydrocarbons
Di-Ester Lubricants
Petroleum Oils / Fuels
Silicone Oils / Greases
Ketones (MEK)
Auto / Aircraft Brake Fluids
Amines (Ammonia)
Acetone, Skydrol, Ethyl Acetate
Hot Water and Steam
Low Molecular Esters and Ethers
Good Wear Resistance
Excellent Comp. SetResistance
Moderate Short-Term Resilience
Excellent Permeation Resistance
Silicone
Standard: 70 Durometer Orange
Temperature Range: -65F to 450F
Dry Heat
Wide Temperature Range
Sunlight, Ozone, Weathering
Odorless and Non-Toxic
Ketones (MEK)
Acids
Silicone Oils
Brake Fluids
Poor Wear Resistance
Excellent Comp. SetResistance
Poor Short-Term Resilience
Excellent Permeation Resistance
EPDM
(Ethylene Propylene)
Standard: 70 Durometer Black
Temperature Range: -60F to 250F
Sunlight, Ozone, Weathering
Hot Water and Steam
Auto / Aircraft Brake Fluids
Some Acids and Bases
Ketones and Alcohols
Plumbing
Petroleum Oils
Fuels
Good Wear Resistance
Good Comp. SetResistance
Moderate Short-Term Resilience
Good Permeation Resistance
Material
Recommended Use
Not Recommended For
Mechanical Properties
Chemraz
/ Kalrez
/ Simriz
(Perfluoroelastomer)
Various Compounds
Designed for Specific Applications
Temperature Range: -10F to 615F
High Temperature Resistance
Excellent Chemical Resistance
Low Out Gassing
Chlorine Wet/Dry
Petroleum Oil
Chlorinated Hydrocarbons
Molten metals
Gaseous Alkali Metals
Halogenated Freons/Fluids
Uranium Hexafluoride
Good Wear Resistance
Good Comp. SetResistance
Moderate Short-Term Resilience
Good Permeation Resistance
Neoprene
(Chloroprene)
Standard: 70 Durometer Black
Temperature Range: -35F to 250F
Refrigerants (Freon)
Ammonia
Some Petroleum Oils
Dilute Acids
Silicone ester Lubricants
Ketones (MEK)
Gasoline
Auto / Aircraft Brake Fluids
Good Wear Resistance
Moderate Comp. SetResistance
Moderate Short-Term Resilience
Good Permeation Resistance
Urethane
Standard: 90 Durometer Translucent
Temperature Range: -65F to 200F
Drive Belts
Some Petroleum Oils
Some Hydrocarbon Fuels
Oxygen / Ozone
Ketones (MEK)
Acids
Auto / Aircraft Brake Fluids
Chlorinated Hydrocarbons
Water
Excellent Wear Resistance
Poor Comp. SetResistance
Excellent Short-Term Resilience
Fluorosilicone
Standard: 70 Durometer Blue
Temperature Range: -80F to 450F
Jet Fuel
Dry Heat
Wide Temperature Range
Some Petroleum Oils
Chlorinated Solvents
Ketones (MEK)
Phosphate Esters
Some Acids
Auto / Aircraft Brake Fluids
Amines (Ammonia)
Poor Wear Resistance
Moderate Comp. SetResistance
Moderate Short-Term Resilience
Poor Permeation Resistance
Teflon Encapsulated
O-Ring Covered with Teflon Tube
Usually Silicone or Viton
Depends on O-Ring Core
Chemical Resistance
Heat Resistance
Depends on O-Ring Core
Good Wear Resistance
Good Short-Term Resilience
Good Permeation Resistance
Teflon
Standard: Non-Elastic White
Temperature Range: -250F to 450F
Chemical Resistance
Fuel Resistance
Low Coefficient of Friction
Non-Elastic
Good Wear Resistance
Low Coefficient of Friction
Material
Recommended Use
Not Recommended For
Mechanical Properties
Item Specifics
Brand :
Bmotiontech
Model :
KF40 Center Ring
MPN :
VAC-SCR-KF40-FKM-10PK
Country/Region of Manufacture :
China
Material :
Stainless steel 304 and FKM
UPC :
349361348230
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