Seal-Lok Products
Reduce Downtime & Installation Costs with FastSeal
Previously, it was necessary to flange or braze hydraulic tubing to make ORFS connections. Now, using Parker's new patent-pending FastSeal, you'll only need a wrench and your tube. An evolution of proven connection technologies, FastSeal combines Parker's robust bite ring and innovative seal dynamics to create a quick robust flat-face tube connection for Seal-Lok ORFS fittings.
FastSeal connections are fast and easy anywhere. Follow the step-by-step FastSeal assembly instructions on this page, watch the video, or download the pdf below. Need additional assistance? See our FastSeal Troubleshooting Tips.
Step-by-Step Assembly: Prep
To start, please select your tubing material, OD, wall thickness and pressure using Table 1. Then, prep your tube by cutting, deburring and cleaning it.
TABLE 1: Tubing OD and Wall Thickness
1Tube walls shown are recommended for Fastseal. Pressure rating shown MAY be de-rated, verify application pressure with listed tube wall pressure in table before use.
For proper tube end preparation see the Assembly and Installation Section Parker’s Catalog 4300 or watch our techConnect Tube End Prep Video.
A heavy deburr, per Figure 1 of at least 1 mm on the tube is recommended to prevent damage to the internal O-ring. Ensure tube is clean and all chips and debris have been removed from the tube. The deburr dimension can be checked visually (roughly the thickness of a coin) or with the depth gauge on the back end of the marking tool.
Step-by-Step Assembly: Pre-Set
FastSeal connections require pre-setting the bite wing. This can be accomplished by hand with a wrench and is best done with the assistance of a fixed vice and assembly mandrel. Have questions? See our FastSeal Troubleshooting Tips. Have a lot of FastSeal assemblies to make? You can also use Parker's Hydra-Tool or Hyferset to preset Fastseal.
Step 1
Place marking tool on tube until it bottoms out. Mark around OD as shown. If marking tool is not available, use insertion depths shown in Table 2.
Step 2
Lightly thread FastSeal nut onto fitting body or mandrel hand tight. This is best completed with the assistance of a fixed vice if available.
Step 3
Lubricate the end of the tube with hydraulic oil to help with insertion in the next step.
Step 4
Insert the tube into the FastSeal nut to the tube depth mark. Twist and push tube to aid the insertion. You will feel the tube pop past the O-ring and bottom out.
Step 5
Now tighten the nut finger tight and then mark the nut and body as shown to assist with the FFFT preset.
Step 6
Tighten the nut to specified FFFT of 7-8 flats. You should feel a perceptible torque rise around 7 flats.
For SS nuts, if torque rise is too high before reaching 7 flats, loosen the nut, lubricate threads with anti-seize and retighten until reaching the 7-8 FFFT.
.
TABLE 2: Tube Insertion Depths when not using marking tool
Step-by-Step Assembly: Inspection & Installation
PRE-SET INSPECTION
The gap closure is an important visual inspection to make after presetting the FastSeal nut. A "closed gap" can vary from 0-0.01" (0-0.25mm). This small gap may appear due to spring back of the material and will close when the parts are tightened at final assembly.
Loosen and back off nut to inspect the sleeve gap to ensure it has closed (see Figure 2).
FIGURE 2: Gap closure inspection reference
INSTALLATION
Once the gap is confirmed closed, assemble tube to fitting body and torque to the values shown in Table 3.
TABLE 3: Final Assembly Torque
Have questions? See our FastSeal Troubleshooting Tips.
Fix Damaged Tube in the Field
FastSeal can be used as a splice to repair pinhole leaks and small sections of a damaged tube in the field. All you need are two FastSeal fittings, one Parker HLO ORFS union or WLO ORFS long union fitting, and a pair of wrenches.
Follow these quick steps:
- Identify the leak point or damage on your tube (a), then measure and mark a total "L1" distance (b) given in Table 1 based on your size tubing.
- Cut your tube at the marked location to remove the leak point and deburr the two exposed tube ends.
- Install the Parker FastSeal connections on each tube end (c) according to the FastSeal installation instructions, shown above on this page.
- Insert your zero-clearance HLO or WLO ORFS union fitting (d) and tighten the FastSeal tube nuts per the Torque specs in Table 1.
Table 1: FastSeal Assembly Reference
1 See the FastSeal Assembly instructions shown above on this page
ASSEMBLY PROCESS
FastSeal Troubleshooting
Need additional assistance? See the tips below or contact us with any questions. We are happy to help.
| UNSURE IF TUBE IS BOTTOMED | Use tube marking tool or insertion depths in Table 2 to mark tube prior to insertion and to identify if you have met appropriate depth when tube is inserted into nut. |
| UNABLE OR DIFFICULT TO PUSH TUBE INTO NUT | Tube may be oversized or oval. Use tube making gauge to check for correct size and ovality. If tube does not fit in gauge do not use, select another tube and use gauge to verify the size and ovality before using. OR Ensure nut was not tightened more than finger tight onto fitting or mandrel body before inserting tube. Do not wrench tighten nut before tube is fully inserted this may cause bite ring to begin to preset, interfering with tube insertion. |
| TUBE WILL NOT PUSH TO MARKED DEPTH ON TUBE | Avoid O-ring damage, DO NOT FORCE TUBE. Remove tube and ensure tube is properly deburred to at least 0.040in (1.0 mm) and is cleaned thoroughly. Inspect the tube to ensure it is round, within dimensional specs (should easily fit in tube marking gauge) and has no burrs. Ensure a small amount of oil is applied to end of tube before inserting, use slight twist when inserting. DO NOT FORCE, DO NOT USE A HAMMER. |
| GAP NOT CLOSED AFTER PRESETTING | If gap of more than 0.01in (0.25mm) is detected, reassemble to last marked position, tighten nut ½ additional flat, inspect gap for closure. |
| LEAKS AT LOW PRESSURE | Internal O-ring may be damaged. To replace seal, please contact Division for assistance. |
| LEAKS AT HIGH PRESSURE | Inspect the ferrule and sleeve to confirm there was no gap after presetting, tighten until gap is 0-01". Internal O-ring may be damaged - to replace contact Division for assistance. Ensure connection was tightened to proper Seal-Lok assembly torque per Table 3. Confirm ORFS seal is not damaged or missing. |
| TUBE MOVES IN NUT AFTER PRESETTING OR FINAL ASSEMBLY | Preset was not done correctly. DO NOT USE CONNECTION. Remake tube assembly. |
| TUBE PULLS OUT OF NUT AFTER PRESET | Preset was not done correctly, tube too hard. DO NOT USE CONNECTION. Check tube material, wall thickness and size. FastSeal carbon steel nuts are intended for use only with low carbon steel seamless or DOM tube intended for hydraulic applications (reference SAE J524/J525). FastSeal stainless steel nuts are intended for use only with 304 or 316 stainless steel seamless or DOM tubes (reference SAE J524/J525). |
| UNSURE WHAT TUBES TO USE | FastSeal carbon steel nuts are intended for use only with low carbon steel seamless or DOM tube intended for hydraulic applications (reference SAE J524/J525). FastSeal stainless steel nuts are intended for use only with 304 or 316 stainless steel seamless or DOM tubes (reference SAE J524/J525). Use of the correct tube wall is critical to meet performance criteria. Recommended tube walls and pressure can be found in Table 1. |
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