ISO-LF Blank Flange

Blank flanges are manufactured with no weld prep and no tubing bore. They are commonly used to close unused ports or they are altered by customers with their own custom machining capability for a special use.



  • High Vacuum Rated to 1×10-8 Torr
  • Bakeable to 200°C
  • Compatible with all ISO standard vacuum flanges and fittings
  • Designed to fit standard inch tubing O.D.’s



  • Standard:
    • 304 Stainless Steel
    • 6061 Aluminum


Product Notes

  • Close off unused ports
  • Good choice for custom modification

*Dimensions are in inches unless otherwise specified

Part IDReference NumberA B Material 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID4500087Reference NumberLF63-000A 3.74B 0.47Material 304 SST3D CADLoginDrawingLoginUnit Price$61.0029
Part ID4500096Reference NumberLF63-000-ALA 3.74B 0.47Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit Price$44.5047
Part ID4500097Reference NumberLF80-000-ALA 4.33B 0.47Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit Price$58.001
Part ID4500088Reference NumberLF80-000A 4.33B 0.47Material 304 SST3D CADLoginDrawingLoginUnit Price$80.5028
Part ID4500089Reference NumberLF100-000A 5.12B 0.47Material 304 SST3D CADLoginDrawingLoginUnit Price$91.75116
Part ID4500098Reference NumberLF100-000-ALA 5.12B 0.47Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit Price$66.10Contact
Part ID4500090Reference NumberLF160-000A 7.09B 0.47Material 304 SST3D CADLoginDrawingLoginUnit Price$120.6067
Part ID4500099Reference NumberLF160-000-ALA 7.09B 0.47Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit Price$110.30Contact
Part ID4500091Reference NumberLF200-000A 9.45B 0.47Material 304 SST3D CADLoginDrawingLoginUnit Price$221.0013
Part ID4500100Reference NumberLF200-000-ALA 9.45B 0.47Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit Price$144.00Contact
Part ID4500092Reference NumberLF250-000A 11.42B 0.47Material 304 SST3D CADLoginDrawingLoginUnit Price$378.5520
Part ID4500101Reference NumberLF250-000-ALA 11.42B 0.47Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit Price$182.00Contact
Part ID4500093Reference NumberLF320-000A 14.57B 0.67Material 304 SST3D CADLoginDrawingLoginUnit Price$650.004
Part ID4500102Reference NumberLF320-000-ALA 14.57B 0.67Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit Price$346.75Contact
Part ID4500094Reference NumberLF400-000A 17.72B 0.67Material 304 SST3D CADLoginDrawingLoginUnit PriceRequest a QuoteContact
Part ID4500103Reference NumberLF400-000-ALA 17.72B 0.67Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit PriceRequest a QuoteContact
Part ID4500095Reference NumberLF500-000A 21.65B 0.67Material 304 SST3D CADLoginDrawingLoginUnit PriceRequest a QuoteContact
Part ID4500104Reference NumberLF500-000-ALA 21.65B 0.67Material 6061-T6 Aluminum3D CADLoginDrawingLoginUnit PriceRequest a QuoteContact