Vacuum Fittings
Below are the sizes for the diameters of the various NW, QF, KF and ISO vacuum fittings. We have included a file you may download that shows, to scale, the various sizes. This chart also lists the physically measured diameters of the flange so you can use it to review what you have there used a ruler or calipers. There is typically enough differentiation in the size of the diameters of the flange compared to other sizes of flanges to easily determine one NW size from another by simply by measuring with a ruler, scale or calipers. Exceptions are some of the oddballs. The NW10 size, which is not often used, is many times satisfied with standard NW16 parts.-
NW16 X .375" Male National Pipe Tap (MNPT) Aluminum (3/8" NPT)
$ 43.05$ 45.33 -
NW16 X .250" Male National Pipe Tap (MNPT) Aluminum (1/4" NPT)
$ 43.05$ 45.33 -
NW16 X .125" Male National Pipe Tap (MNPT) Aluminum (1/8" NPT)
$ 39.48$ 41.55 -
NW16 Oring - Silicone Elastomer
$ 1.25$ 1.30 -
NW16 Oring - Buna-N Elastomer
$ 1.05$ 1.09 -
NW16 Centering Ring Aluminum Silicone Oring
$ 8.65$ 9.11 -
NW16 Centering Ring Aluminum Buna-N Oring
$ 4.28$ 4.50 -
NW16 Centering Ring 304 Stainless Steel Silicone Oring
$ 9.51$ 10.01 -
NW16 Centering Ring 304 Stainless Steel Buna-N Oring
$ 7.23$ 8.51 -
NW10 Centering Ring Aluminum Buna-N
$ 7.23$ 7.61 -
NW10 Centering Ring 304 Stainless Steel Buna-N Oring
$ 26.59$ 27.99 -
NW16 TO NW10 Adaptive Centering Ring Aluminum No Oring
$ 11.41$ 12.02 -
NW16 Centering Ring Aluminum No Oring
$ 3.46$ 3.65 -
NW16 Weld Ring 304 Stainless Steel .75" ID Accepts 3/4" Tubing
$ 11.67$ 12.29 -
NW16 Weld Ring 304 Stainless Steel .50" ID Accepts 1/2" Tubing
$ 11.67$ 12.29 -
NW16 TO NW50 Conical Adapter Aluminum
$ 55.62$ 58.56 -
NW16 TO NW50 Conical Adapter 304 Stainless Steel
$ 64.59$ 68.00 -
NW16 TO NW40 Conical Adapter Aluminum
$ 62.80$ 66.11 -
NW16 TO NW40 Conical Adapter 304 Stainless Steel
$ 62.80$ 66.11 -
NW16 TO NW25 Conical Adapter Aluminum
$ 53.84$ 56.67 -
NW16 Instrument Adapter Swagelok Male to Tubing
From $ 85.00 - $ 125.61 -
NW16 X 20" Bellows Hose Fitting .006 Wall Thickness 304 Stainless Steel
$ 143.55$ 151.11 -
NW16 X 10" Bellows Hose Fitting .006 Wall Thickness 304 Stainless Steel
$ 107.67$ 113.34