Request form
- Products
- Vacuum pumps and vacuum stations
- Dry vacuum pumps (R&D)
- Rotary vane pumps
- Turbomolecular pumps
- T-Station
- Diaphragm Pumps
- D-LAB
- GEMINI
- MP (physical applications)
- MPC (chemical applications)
- ATEX Approved MPC
- MPC (ultimate pressure less than 2 mbar)
- MPC (ultimate pressure less than 75 mbar)
- MPC 090 E, 90...260VAC /18VDC
- MPC 110 E, 90...260VAC /24V
- MPC 1201 E, 230/400V 50/60Hz
- MPC 1201 E, 230V 50/60Hz
- MPC 201 E, 230V 50/60Hz
- MPC 2401 E, 230/400V 50/60Hz
- MPC 2401 E, 230V 50/60Hz
- MPC 301 E, 230V 50/60Hz
- MPC 302 E, 230V 50/60Hz
- MPC 601 E, 230/400V 50/60Hz
- MPC 601 E, 230V 50/60Hz
- MPC 602 E, 230/400V 50/60Hz
- MPC 602 E, 230V 50/60Hz
- MPC (ultimate pressure less than 8 mbar)
- XDD1
- Ion and Getter Pumps
- Cryopumps
- Chemical pumps
- Semiconductor Pumps
- Claw vacuum pumps
- Dry vacuum pumps (GV)
- Diffusion Pumps
- Mechanical Boosters
- EH Mechanical Booster Pumps
- HV mechanical boosters pumps
- Stokes 1700
- Stokes 6"
- 607 5H10
- 607 5HR
- 607 5HR CE 7.5kW
- 607 5V10
- 607 5VR
- 607 5VR CE 7.5kW
- 607 MH05
- 607 MH20
- 607 MHR
- 607 MHR CE
- 607 MV05
- 607 MV20
- 607 MVR
- 607 MVR CE
- 615 5H15
- 615 5HR
- 615 5HR CE 11kW
- 615 5V15
- 615 5VR
- 615 5VR CE 11kW
- 615 MH10
- 615 MH15
- 615 MHR
- 615 MHR CE
- 615 MV10
- 615 MV15
- 615 MVR
- 615 MVR CE
- 61B 5H25
- 61B 5HR
- 61B 5HR CE 18.5kW
- 61B 5V25
- 61B 5VR
- 61B 5VR CE 18.5kW
- 61B MH10
- 61B MH25
- 61B MHR
- 61B MHR CE
- 61B MV10
- 61B MV25
- 61B MVR
- 61B MVR CE
- 622 5H25
- 622 5HR
- 622 5HR CE 18.5kW
- 622 5V25
- 622 5VR
- 622 5VR CE 18.5kW
- 622 MH25
- 622 MHR
- 622 MHR CE
- 622 MV25
- 622 MVR
- 622 MVR CE
- Exhaust management
- Vacuum componets
- CF Flanges & Components
- Crosses & Cubes
- Double-Faced CF Flanges
- Bellows
- Elbows
- Gaskets for CF Flanges
- Nipples
- Standard Flanges (304 L SS)
- Standard Flanges (316LN SS)
- Standard Flanges (Aluminum A2219)
- Tees
- Zero- Length Reducer Flanges
- Hardware
- Metric Hex Head Bolt & Nut Sets (Clearance Flanges)
- Metric Hex Head Bolt Kits (Tapped Flanges)
- Metric Plate Nuts (Clearance Flanges)
- SI 12-point Cap Screw & Nuts Sets (Clerance Flanges)
- SI 12-Point Cap Screw Kits (Tapped Flanges)
- SI Hex Head Bolt & Nut Sets (Clearance Flanges)
- SI Hex Head Bolt & Plate Nuts Sets (Clearance Flanges)
- Si Hex Head Bolt Kits (Tapped Flanges)
- SI Plate Nuts (Clearance Flanges)
- ISO Flanges & Components
- KF (NW) Flanges & Components
- CF Flanges & Components
- Vacuum valves
- Air admittance valves
- Ball valves
- Electromagnetic valves
- Manual valves
- Pneumatic valves
- Speedivalve
- Vacuum measurement & control
- Leak detection
- Oils and fluids
- Blowers
- Laboratory technique
- Filtration
- Inlet Vacuum Pump Filters
- CT Series 1" - 6" BSPP
- CSL Series 3" - DN300 BSPT, Flange
- CSL Series 3/8" - 3" BSPP
- FST Series 1½" - 8" Multi-App Filters
- ISO CSL Series NW16 - NW40 Flg (Black Finish)
- ISO Flg Vacuum Filters, CSL Series (Electroless Nickel Finish)
- IVPL Series 3"-12" Lateral Access "L" Style Filters
- IVPS Series 3"-12" Lateral Access Straight Through Style
- SpinMeister ST Series
- ST Series, See-Through Vacuum Filter
- VL Series 3"- 6" MPT (BSPT)
- VL Series 4" - 6" Flange
- VS Series 3" - 6" MPT (BSPT)
- VS Series, 4" - 6" Flange
- Inlet Filter Assemblies
- Big Boy F Series DN200 - DN300 Flange
- CSS Series 1/4" - 1"
- F Series 3" - 6" BSPT
- F Series DN80 - DN150
- FT Series 1/2" - 3" BSPT
- FT Series 3" - 6" Flange
- FT Series DN200 - DN300, Flange PN10
- FT Series DN80 - DN150, PN10 & 16
- SM Series 1"- 2-1/2"SpinMeister Extreme Duty Filters
- SM Series 1/2" - 1" SpinMeister
- SM Series 4" SpinMeister Extreme Duty Filters
- SM Series DN125 - DN300 SpinMeister Extreme Duty Filters
- Inlet Filter Silencers
- Sumo Class Filter Silencers
- BBF Series 2"-6" Silencer Frame for PD Blowers
- Belt Guard for BBF Series Base Frame
- Big Boy Filter Silencers, QB Series DN200 - DN300
- Big Boy FS Series 6"-14" Flange Filter Silencers
- EFS Series-Discharge Silencer
- FS Series 1/2" - 3" Filter Silencers
- FS Series 1/4"-1" Filter Silencers
- FS Series 3" - 6" Filter Silencers
- FS Series DN80 - DN150, PN Pattern Flange
- LQB Series 3" BSPT - DN300 Flg
- Multibarrel Filter Silencers
- PS Series Plastic Filter Silencers
- QB Series Compact Filter Silencers
- QB Series DN80 - DN150 Filter Silencers
- SLCR / SLCRT Series 1/2" - 4" FPT (BSPP) Silencers
- Snubber Discharge/Intake Silencer
- Air / Oil Separators
- ATS Series Vacuum Discharge Sump & Separator Tank
- Crankcase Ventilation System
- CVB Series
- CVH Series, Static Vent Breathers
- EE/SV Series 3/8" BSPP, ISO Flg
- EF Series 1/2" - 1 3/4", ISO Flanges
- EFDB Series
- HDL Series 1" - 2 1/2" BSPP
- HDL Series 3" BSPT - DN200 Flange
- Suction Scrubber Vessels
- VAE Series, Vacuum Assisted Oil Mist Eliminator
- Filter Elements
- Wire Mesh Elements, "S" Media
- 1 Micron Polyester Elements, "Z" Media
- 100 Micron Polyester Elements, "W" Media
- 25 Micron Polyester Elements, "U" Media
- 4 Micron Polyester Elements, "N" Media
- ACG Media
- Activated Alumina Elements, "AA" Media
- Activated Carbon Elements, "AC" Media
- Blower Filter Elements, 32 Series
- Coalescing Elements for Oil Mist Eliminators
- Compact / Big Boy Series Replacement Element
- Electrostatic, Odor Adsorptive Elements, "GM" Media
- HEPA Elements w/SS ID/OD, "HE" Media
- HEPA Elements w/SS ID/OD/EC, "HE" Media
- HEPA Elements, "HE" Media
- Hockey Puck Filter Elements for Miniature Filter Assemblies
- J Series, Polyester/Paper Media with SS ID/OD
- K Series, Polyester/Paper Media with SS ID/OD
- Low Pressure Drop WP Media Coalescing Elements
- Nomex Elements, "MX" Media
- Polypropylene Elements, "Y" Media
- Polyurethane Foam Elements, "FXF" Media
- PPS Elements, "RY" Media
- PTFE Elements, "TF" Media
- Q Series, Polyester/Paper Media with SS ID/OD/EC
- R Series, Polyester/Paper Media with SS ID/OD/EC
- Replacement Elements 60 - 510 m3/h Flow Range
- Small Vacuum Pump Elements, 800 Series
- Special Sized Filter Elements
- SS Nomex Element, "MXD" Media
- SS Screen Elements, "XXWSS" Media
- SS Wire Mesh Elements, "S2" Media
- Top Hat Style Separators, 51 Series
- ULPA "UL" Media
- Parts/Accessories
- Specialty Applications
- Inlet Vacuum Pump Filters
- Air knives Systems
- Spare Parts
- Sale !
- Vacuum pumps and vacuum stations
- Services
- Markets
- Research and Development
- Technical Information
- Download
- Contact
O-Rings (Buna-N)
Activair.cz > Products > Vacuum componets > KF (NW) Flanges & Components > O-Rings & Centering Rings > O-Rings (Buna-N)
These replacement elastomeric o-rings are used (in conjunction with a centering ring - not included) for sealing KF flanges. The KF (QF) flange is used for through or foreline vacuum plumbing and for simple HV chamber ports.
O-Rings Feature:
- O-Rings available in fluorocarbon, Buna-N (nitrile rubber), and silicone materials
- The more popular o-ring sizes for vacuum use are listed below
| Flange Size | Material | O-Ring ID | O-Ring Cross Section |
Weight kg |
| KF10 | Buna-N | 15.2 | 5.3 | 0.25 |
| KF16 | Buna-N | 18.3 | 5.3 | 0.25 |
| KF25 | Buna-N | 27.9 | 5.3 | 0.25 |
| KF40 | Buna-N | 40.6 | 5.3 | 0.25 |
| KF50 | Buna-N | 53.3 | 5.3 | 0.25 |
