KF Flanges and Fittings

KF fittings compliant to the Small Flange (Kleinflansch) or the KF Standard DIN 28403, ISO 2681. These KF fittings are typically used in low, medium and high vacuum applications, down to 10-8 Torr. All KF fittings have a common 15-degree tapered flange with sizes interchangeably measured in NW or DN denominations, depending on the manufacturer.

Image Encole Part Number Price Bend Angle Centering Ring Material Clamp Size Cross Type Length Length Center to End Material Nominal Pipe Size O-Ring Material Tube O.D.
172A1000 $8.00 each - - KF16 - - - - - - -
172A1001 $10.20 each - - KF25 - - - - - - -
172A1002 $12.50 each - - KF40 - - - - - - -
172A1003 $18.00 each - - KF50 - - - - - - -
174A1000 $8.25 each - Aluminum - - - - - KF10 Viton -
174A1001 $10.00 each - Aluminum - - - - - KF16 Viton -
174A1002 $11.50 each - Aluminum - - - - - KF25 Viton -
174A1003 $14.50 each - Aluminum - - - - - KF40 Viton -
174A1004 $16.50 each - Aluminum - - - - - KF50 Viton -
175A1000 $16.25 per package of 5 - - - - - - - KF16 Viton -
175A1001 $18.75 per package of 5 - - - - - - - KF25 Viton -
175A1002 $24.75 per package of 5 - - - - - - - KF40 Viton -
175A1003 $31.25 per package of 5 - - - - - - - KF50 Viton -
176A1000 $11.85 each - - - - - - Aluminum KF10 - -
176A1001 $13.25 each - - - - - - Aluminum KF16 - -
176A1002 $14.85 each - - - - - - Aluminum KF25 - -
176A1003 $15.00 each - - - - - - Aluminum KF40 - -
176A1004 $20.50 each - - - - - - Aluminum KF50 - -
177A1000 $10.75 each - - - - - - Aluminum KF16 - -
177A1001 $12.75 each - - - - - - Aluminum KF25 - -
177A1002 $15.75 each - - - - - - Aluminum KF40 - -
177A1003 $23.75 each - - - - - - Aluminum KF50 - -
178A1000 $16.00 each - - - - 1.150 inch - AISI 304 KF16 - 0.750 inch
178A1001 $18.75 each - - - - 2.030 inch - AISI 304 KF25 - 1.000 inch
178A1002 $22.25 each - - - - 2.400 inch - AISI 304 KF40 - 1.500 inch
178A1003 $33.00 each - - - - 3.150 inch - AISI 304 KF50 - 2.000 inch
179A1000 $45.40 each - - - - 2.300 inch - AISI 304 KF16 - 0.750 inch
179A1001 $51.28 each - - - - 4.060 inch - AISI 304 KF25 - 1.000 inch
179A1002 $63.80 each - - - - 4.800 inch - AISI 304 KF40 - 1.500 inch
179A1003 $77.90 each - - - - 6.300 inch - AISI 304 KF50 - 2.000 inch
181A1000 $59.45 each 45 deg - - - - 0.910 inch AISI 304 KF16 - 0.750 inch
181A1001 $67.72 each 45 deg - - - - 1.120 inch AISI 304 KF25 - 1.000 inch
181A1002 $105.35 each 45 deg - - - - 1.680 inch AISI 304 KF40 - 1.500 inch
181A1003 $103.39 each 45 deg - - - - 1.990 inch AISI 304 KF50 - 2.000 inch
182A1000 $49.45 each 90 deg - - - - 1.630 inch AISI 304 KF16 - 0.750 inch
182A1001 $56.95 each 90 deg - - - - 1.670 inch AISI 304 KF25 - 1.000 inch
182A1002 $77.35 each 90 deg - - - - 2.460 inch AISI 304 KF40 - 1.500 inch
182A1003 $99.72 each 90 deg - - - - 3.230 inch AISI 304 KF50 - 2.000 inch
183A1000 $70.25 each - - - - - 1.570 inch Aluminum KF16 - 0.750 inch
183A1001 $79.25 each - - - - - 1.970 inch Aluminum KF25 - 1.000 inch
183A1002 $88.25 each - - - - - 2.560 inch Aluminum KF40 - 1.500 inch
183A1003 $128.25 each - - - - - 2.760 inch Aluminum KF50 - 2.000 inch
184A1000 $103.50 each - - - 4-Way Cross - 1.570 inch Aluminum KF16 - 0.750 inch
184A1001 $116.50 each - - - 4-Way Cross - 1.970 inch Aluminum KF25 - 1.000 inch
184A1002 $149.50 each - - - 4-Way Cross - 2.560 inch Aluminum KF40 - 1.500 inch
184A1003 $199.50 each - - - 4-Way Cross - 2.760 inch Aluminum KF50 - 2.000 inch
185A1000 $97.75 each - - - - - - Aluminum KF16 - -
185A1001 $97.75 each - - - - - - Aluminum KF16 - -
185A1002 $112.75 each - - - - - - Aluminum KF16 - -
185A1003 $165.75 each - - - - - - Aluminum KF16 - -
185A1004 $83.25 each - - - - - - Aluminum KF25 - -
185A1005 $99.00 each - - - - - - Aluminum KF25 - -
185A1006 $126.00 each - - - - - - Aluminum KF25 - -
185A1007 $179.00 each - - - - - - Aluminum KF25 - -
185A1008 $90.00 each - - - - - - Aluminum KF40 - -
185A1009 $129.50 each - - - - - - Aluminum KF40 - -
185A1010 $156.25 each - - - - - - Aluminum KF40 - -
185A1011 $224.50 each - - - - - - Aluminum KF40 - -
185A1012 $94.00 each - - - - - - Aluminum KF50 - -
185A1013 $168.50 each - - - - - - Aluminum KF50 - -
185A1014 $179.00 each - - - - - - Aluminum KF50 - -
185A1015 $238.75 each - - - - - - Aluminum KF50 - -