


PEEK Nut for IL SUNG Stenters
A PEEK nut is, strictly speaking, the adjustable nut on the stenter's lead rod, the part that lets the guide rail be widened. Because PEEK is self-lubricating it needs no molybdenum disulfide. It is not easy to break, it resists high temperature and corrosion, it wears slowly, and it lasts longer than the part it replaces. PEEK, polyether ether ketone, is a high-performance thermoplastic. It combines high temperature resistance, wear resistance, self-lubrication, low noise, corrosion resistance and high strength, which is why it has spread so widely through textile machinery. This is the IL SUNG reference, for Korean-built machines where the lead rod thread differs from the Monforts pattern.
Key Benefits
- Made to the IL SUNG lead rod rather than adapted from a Monforts nut
- Self-lubricating, so no molybdenum disulfide on the rod
- High temperature, corrosion and wear resistant
- Sizes 44 x 7, 44 x 6, 45 x 6 and 45 x 6.35, 0.238 kg reference weight
Application Scenarios
- IL SUNG width adjustment mechanisms being overhauled
- Used IL SUNG machines recommissioned without parts records
- Mills running IL SUNG alongside German machines
Who It Is For
- Finishing mills running IL SUNG stenters
- Buyers recommissioning used Korean machines
- Machinery dealers supporting IL SUNG in the field
Problems It Solves
- A seized width adjustment nut stopping the rail from being widened at all.
- Molybdenum disulfide grease on the lead rod migrating where it is not wanted.
- Brittle nuts breaking under load and leaving the rail stuck at one width.
- IL SUNG parts being slow or expensive to source outside Korea.
Technical Features and Specifications
Every figure below comes from the part itself. Where a dimension is not listed, it is because we match it against your sample rather than publish a number we cannot stand behind.
Technical Features
- Material: PEEK
- Sizes 44 x 7, 44 x 6, 45 x 6 and 45 x 6.35
- Reference weight 0.238 kg
- Self-lubricating, no molybdenum disulfide required
- For IL SUNG stenters, delivery within 7 days
Specifications
| Application | Monforts stenter |
|---|---|
| Material | peek |
| Type | 44*7 / 44*6 / 45*6 / 45*6.35 |
| Colour | black and yellow |
| Weight | 0.238kg |
| Brand | YH |
| Origin | Zhejiang, China |
| Delivery Time | Within 7 days |
Quality Control
- Dimensions gauged against the reference part on every batch
- Material certificate held for the PEEK stock
- Fit checked on a chain or rail section before packing
- Parts packed in rail quantities so nothing is short on site
Customisation Options
- Sizes matched from your sample
- Supplied in rail quantities
- Available with the matching chain or rail parts
How It Compares
| Compared With | What Changes |
|---|---|
| Monforts PEEK nuts | Same material and the same principle, different lead rod. Do not substitute one for the other. |
| Metal nuts | PEEK removes the need for molybdenum disulfide on the rod and does not seize. |
Fitting and Replacing This Part
Step 1
Stop the machine and let the assembly cool before stripping it
Step 2
Note the orientation of the part before removing it
Step 3
Clean the seat completely before fitting the new part
Step 4
Fit by hand, without forcing, and check free movement
Step 5
Replace in complete sets so wear stays even across the machine
Related Solutions
- Complete Stenter Rail Rebuild — Chain, pin plates, holders, clips, sliders and graphite strip quoted and shipped as one matched package.
Industries Using This Part
Guides That Mention This Part

Stenter Pin Plate and Brush Wheel Size Reference
A working reference of the plate dimensions, hole centres and brush wheel sizes we hold, with the measurements to take before you order.
Read Guide
Oil-Free or Lubricated Stenter Guides
An oil-free guide keeps lubricant away from the fabric using graphite strips and PEEK sliders. A lubricated guide uses a grease film. The chain is different for each, and mixing them is a costly mistake.
Read Guide
Stenter Chain Maintenance and Lubrication
Clean the guide and chain at least once a year, use a high temperature grease, and measure pitch over ten links before you decide to replace anything.
Read GuidePEEK Nut for IL SUNG Stenters Questions
Do you carry other IL SUNG parts?
Yes, IL SUNG pin plates and related chain parts. Send us a photo of any part and we will quote against it.
Will a Monforts nut fit an IL SUNG machine?
Not reliably. The lead rod differs. Match on the nut you are removing.
What sizes are available?
44 x 7, 44 x 6, 45 x 6 and 45 x 6.35.
How long is delivery?
7 days for standard sizes.
Get a Price on This Part
Tell us the machine brand, the quantity and your rail length. If you are not sure the part matches, send a photo with a ruler across the mounting and we will confirm before you pay.



