Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
4300
Catalog
Seal-Lok™ O-Ring Face Seal Tube Fittings
A6
Seal Material Selection:
Please refer to
in the
of this catalog.
TubeWallThickness:
Recommended min/max tube wall thick-
nesses for inch and metric Seal-Lok are provided in Tables
and
in the
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
for tooling availability.
International Acceptance
The tube/hose end connection for metric Seal-Lok is the same
as standard (inch) Seal-Lok. It consists of a body, a flange or
braze sleeve, an O-ring and a nut. The difference is at the port
end of the fitting. Instead of the SAE straight thread connection
for example, it features a similar connection with metric threads
per ISO 6149-2 or ISO 9974-1.Additionally, the fitting body, tube
nut and locknut are manufactured with metric hexes or wrench
flats for shaped fittings. The metric Seal-Lok fittings meet or
exceed all requirements of ISO 8434-3.
To identify the metric sleeves used for metric tubing, there is a
groove machined into the TPLS & TLS sleeves.
Universal Push-to-Connect (UPTC)
Introduction
Traditionally, the fluid power industry has utilized threaded
connectors to make a leak free connection. The speed of mak-
ing connections is slow and the reliability of the connection is
dependent on proper assembly procedures. Parker’s UPTC
connectors, on the other hand, rely on a mechanical retaining
mechanism (other than threads) for holding power. No tools are
required to assemble, and the reliability and speed of making
connections with the UPTC design is greatly improved.
Design and Construction
UPTC Seal-Lok consists of a base Seal-Lok ORFS fitting, a
UPTC nut (including internal sealing and retaining elements)
and a UPTC hose assembly, as shown in figure A4. The base
ORFS fitting is a highly reliable and widely available off-the-shelf
standard SAE J1453 adapter. The sealing O-Ring is supported
by a pressure energized anti-extrusion ring that preventsO-Ring
extrusion and ensures tight sealing even under high pressure.
Once fully engaged, the retaining element is positively trapped
between the male and UPTC nut. The dust seal keeps con-
tamination out as well as giving a visual indication that the male
stud has been inserted all the way. There is also a clear tactile
indicator at the end of the push indicating a proper connection.
Once a proper connection is made, the dust seal is covered by
the UPTC nut. Proof of full engagement for easy inspection
and quality control.
Fig. A4 — UPTC Seal-Lok is adaptable to a UPTC hydraulic or
thermoplastic hose assembly. To be used with ET, EN, or EU
hose ends.
Once connected, the UPTC nut is permanently attached to the
UPTC hose end similar to a traditional swivel nut. To discon-
nect, just use a wrench to unscrew the UPTC nut from the base
adapter. Re-connect is possible by tightening the UPTC nut
back to the base adapter, if the connection is not damaged. If
the hose is damaged, it can be replaced by installing a readily
available standard Seal-Lok ORFS hose assembly, or a new
UPTC assembly.
Features
Available in sizes 1/4”, 3/8”, 1/2”, 5/8”, 3/4”, and 1”
Utilizes all Seal-Lok adapters for awide variety of configura-
tions, as well as excellent field serviceability
Meets or exceeds SAE 100R2 pressure ratings (see
Table A1)
Includes visual and tactile installation indicators
Self-aligning nipple eliminates hose twist during
assembly
No special tooling required for disassembly
Utilizes elastomeric seals, including Parker’s patented
Trap-Seal
Table A1 — UPTC Seal-Lok pressure ratings.
Size
Pressure (psi) Pressure (Bar)
-4
5800
400
-6
5000
345
-8
4250
293
-10
4000
276
-12
3125
216
-16
3125
216
UPTC Pressure Ratings