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A7
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
4300 Catalog
Seal-Lok™ O-Ring Face Seal Tube Fittings
Dimensions and pressures for reference only, subject to change.
Identification
To differentiate metric Seal-Lok from standard (inch) Seal-Lok,
the following identification features have been incorporated in
the design:
• Straight connectors (straight studs) have a short length
of turn diameter with a small groove machined in it’s
middle, as seen i
n
Fig. A4
.
• The locknuts on shaped connectors (stud elbows, tees
and crosses) have a similar turn diameter adjacent to the
washer, without a groove, as seen i
n
Fig. A4
.
• The sleeve is identified by a small groove machined on
its large diameter as shown i
n
Fig. A5
.
Versatility
The Seal-Lok fitting is very versatile in that it can be used with
inch and metric tubing, as well as hose (see Fig A6).
The following example illustrates the options with a ½" (-8)
Seal-Lok fitting:
• ½" fitting and ½" nut can connect to ½" tubing using the
½" sleeve.
• ½” fitting and ½" nut can connect to 12 mm tubing using
12 mm sleeve.
• Without nut and sleeve, ½" fitting can connect to hose.
The process also works in reverse. A metric Seal-Lok fitting
and metric nut can connect to inch tubing by simply using the
inch sleeve.
Tube Wall Thickness
Recommendedmin/max tubewall thicknesses for inchandmetric
Seal-Lok are provided in Tables A2 and A3, respectively.When
using the braze method, all tube wall thicknesses can be used.
For Parflange min/max tube wall thickness range, please refer
to page S26 for tooling availability.
With any fitting, proper assembly and installation is critical to its
success.Please refer t
o
pagesT13-T18
for the proper assembly
and installation procedures for the Seal-Lok fitting.
Fig. A6 — Seal-Lok Works with Inch or Metric Tube and Hose
Table A2 — Recommended Min./Max. Tube Wall
Thickness for Inch Seal-Lok
Table A3 — Recommended Min./Max. Tube
Wall Thickness for Metric Seal-Lok
Body
Inch Sleeve and Tube
Metric Sleeve and Tube
Nut
Hose
Size
Steel, Alloy Steel, St. Steel,
Copper, Monel
O.D.
Inches
Dash
Number
SAE O-Ring
Face Seal Seal-Lok
1/4
-4
.020 – .083
3/8
-6
.020 – .109
1/2
-8
.028 – .148
5/8
-10
.035 – .134
3/4
-12
.035 – .148
7/8
-14
.035 – .156
1
-16
.035 – .188
1 1/4 -20
.049 – .220
1 1/2 -24
.049 – .250
2
-32
.058 – .250
Steel, Alloy Steel,
Stainless Steel,
Copper, Monel
O.D. Size
in mm
Wall Thickness
in mm
Used With
Fitting Size
6
.5 - 2.25
-4
8
1.0 - 2.5
-6
10
1.0 - 3.0
-6
12
1.0 - 3.5
-8
14
1.0 - 4.0
-10
15
1.0 - 3.0
-10
16
1.0 - 3.0
-10
18
1.0 - 3.0
-12
20
1.5 - 4.0
-12
22
1.0 - 3.0
-16
25
2.0 - 5.0
-16
28
1.5 - 5.0
-20
30
2.0 - 5.0
-20
32
2.0 - 2.5
-20
35
2.0 - 6.0
-24
38
2.5 - 7.0
-24