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The PackRyt® should be installed in the order that it is packaged from the factory -  starting with the bearing unless otherwise instructed. Please note the order and direction before opening packaging. See Example Photo Below.

PackRyt Bearing shown how it comes from the Factory

Remove all old packing, lantern ring, etc. and thoroughly clean the shaft and stuffing box.
Make sure there are no solids present in the sealing area. 

Disconnect any discharge or water “out” flush lines and plug the hole, leaving only the “in” line. 

Note: If installing a PackRyt® bearing this step will have already been finished.

Step 2.

Install each packing ring individually, staggering the joints.

Begin the first ring with the joint at the 2 o’clock position. Seat the ring firmly against bottom of stuffing box OR against the PackRyt® Sealing System Bearing if applicable. Use a tamp tool to ensure the packing is fully seated before installing the next ring (do not use other new packing rings to push in new rings).

Ring joints should be staggered 180° apart for a two ring set, 120° for a three ring set, and 90° for a four or more ring set. Example: For a three ring set, joints should be at 2 o’clock, then 6 o’clock and finally at 10 o’clock.

TIP: There are 30 degrees between each hour. 360 degrees divided by 12 hours equals 30 degrees.


After the last ring is installed you will install the packing follower and tighten the nuts firmly finger tight. You can then use a wrench and tighten the follower nuts 1 half to 1 full turn. DO NOT OVER TIGHTEN. You will feel the packing become slightly snug.

Step 4.

Install flush lines and turn on flush water. There should be a small leakage from the stuffing box.

For BLR (PackRyt®– bearing with integrated lantern ring) configurations turn the water on full force (minimum of 15 psi over stuffing box pressure) prior to running equipment. This is especially important for initial start up.

Start up

Some smoking/steaming can occur at start-up and may last for a minute or two. If smoking/steaming continues beyond the first few minutes the gland follower may be too tight. Loosen the gland follower nuts 2 flats to allow the packing to relax. The smoking/steaming should subside but this may allow flush media to leak.

Once the smoking/steaming has dissipated, SLOWLY tighten the gland follower nuts until the flush media leakage stops or leaks at an acceptable rate. Adjust packing two flats on the nuts at a time and then wait for 5 minutes or so before you tighten more. Note: SealRyt® products do not need leakage to work properly.

Come back the next shift or next day and inspect the packing. If it is necessary to tighten the packing you should follow the process listed above and tighten slowly. When you tighten the packing you must allow time for the increased gland pressure put on the outer rings to move to the inner rings. If you tighten the packing too quickly the load will move to the inner rings and the outer rings will become loose again.

Step 6.

“The jobs not done until the clean up is finished.” – My Grandpa

If you encounter any difficulty or have questions regarding installation or performance, please contact SealRyt at: 413-564-5202 Mon – Fri 8:00AM to 5:00PM EST

Questions? Ask our Engineers.

SealRyt Corp. is the industry leader in rotating shaft sealing technology. Our engineers have years of experience in the science of sealing. That's why we hold multiple patents on sealing technology. That's also why our products last longer, get better results, and simply seal better than any other products available.

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"Your product has performed as advertised and the service by your team has exceeded what was expected. Great job by everyone at SealRyt."
– Steve C., Maintenance/Shutdown Planner
"The PackRyt system works better than every other option that we tried."
– Pulp Mill Supervisor
"A good product, in the right application, that has served the mill well..."
– Andy B, Maintenance Supervisor
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