Thin head ellipse tube plugs sit nearly flush with the tube end for the most minimal-profile finish available on elliptical tubing. Where standard flat head plugs have a visible head thickness, thin head plugs reduce that profile to the bare minimum. The plug seals and protects without adding any noticeable protrusion. Low profile ellipse tube plugs for stackable furniture, tight-clearance applications, and any elliptical tube end where the plug should be as unnoticeable as possible. 2 sizes: 15 × 30 and 20 × 40 mm. Wall 1 to 2 mm. Black, grey, and white. Sold in multiples of 4.
Not sure what size? See the size chart ↓
📦 Sold in packs of 4 — quantity adjustable at checkout
Three head profiles. Three purposes. Flat head provides a standard flush finish. Domed head adds a decorative raised profile. Thin head does the opposite of domed: it reduces the head to the thinnest possible profile that still seals and protects the tube end. On stackable furniture where every millimeter of protrusion affects nesting geometry, on tight-clearance assemblies where the tube end sits close to another surface, and on designs where the plug should disappear rather than draw attention, thin head ellipse tube plugs are the right choice.
Same PE construction and flexible body as standard ellipse tube plugs. Same press-fit installation. The only difference is the head thickness: reduced to the structural minimum. Thin head ellipse tube plugs are low profile ellipse tube plugs for applications where the plug must be as unnoticeable as possible. 2 sizes: 15 × 30 mm and 20 × 40 mm. Wall thickness 1 to 2 mm. Black, grey, and white. Sold in multiples of 4.
Thin head ellipse tube plugs share the same tube dimensions as flat head ellipse plugs: 15 × 30 and 20 × 40 mm. The tube size is identical. The head profile is the only difference. This means thin head and flat head are directly interchangeable on the same tube if you decide to switch between profiles.
Wall: 1 to 2 mm. The smaller ellipse for lightweight stackable chairs, compact display fixtures, and narrow structural members. Thin head reduces the visible profile to near-flush with the tube edge. Black, grey, and white.
Wall: 1 to 2 mm. The larger ellipse for standard stackable dining chairs, commercial seating, and any application where 20 × 40 mm elliptical tubing needs the most minimal endpoint. Black, grey, and white.
For a standard flat head on the same tube sizes, see ellipse tube plugs (15 × 30 and 20 × 40 mm). For a decorative raised dome, see domed ellipse tube plugs (15 × 30 and 20 × 35 mm). For oval tubes (rounded ends), see oval tube plugs. For custom sizes, contact Business Solutions.
Same three measurements as all ellipse tube plugs: short axis (width), long axis (length), and wall thickness. Thin head ellipse tube plugs fit the same tubes as the flat head variant. If you already know your tube fits a 15 × 30 or 20 × 40 mm flat head ellipse plug, the thin head version fits the same tube.
Use calipers across the narrowest point of the elliptical opening, outside edge to outside edge. The short axis must be 15 or 20 mm.
Use calipers across the widest point, through the pointed ends. The long axis must be 30 mm (for 15 mm short axis) or 40 mm (for 20 mm short axis).
Use calipers at the tube end. Both sizes accept 1 to 2 mm wall thickness across the full range. This is the same wall range as the flat head variant.
Identical to flat head installation. Align the pointed ends of the plug with the pointed ends of the tube, then press in. The thinner head requires slightly less insertion force because there is less material at the head to compress during the final seating. Otherwise the process is the same.
Every benefit of a standard ellipse tube plug with the additional advantage of minimal protrusion. The National Wood Flooring Association (NWFA) recommends protective measures on all furniture legs, and thin head ellipse tube plugs provide that protection with the lowest possible visual and physical profile.
The primary application. Stackable chairs are designed with precise nesting tolerances. A standard flat head plug adds a few millimeters of protrusion at each tube end. A domed plug adds even more. Across a stack of 10 or 15 chairs, those millimeters accumulate and can prevent the top chairs from seating properly in the stack. Thin head ellipse tube plugs reduce the protrusion to the structural minimum, preserving the nesting geometry that the furniture designer intended. For commercial environments where chairs stack daily, stacking reliability directly affects staff efficiency and furniture condition. Minimal profile elliptical plugs that protect without interfering with the stack.
When an elliptical tube end sits close to another surface (an adjacent leg, a crossbar, a seat pan, a wall), standard head thickness can create contact or interference. Thin head ellipse tube plugs reduce the head to a near-flush profile that avoids these clearance problems. Flush ellipse tube plugs thin enough to fit where standard heads do not.
Some furniture designs call for the tube end to look as close to unfinished as possible while still being sealed and protected. Thin head ellipse tube plugs achieve this: the tube end appears to simply stop, with almost no visible cap or head. This is the opposite of the domed ellipse plug, which deliberately draws attention. Thin head plugs for ellipse legs that disappear into the design.
Floor protection, tube sealing, noise dampening, and moisture barrier. The thinner head does not compromise any of these functions. The PE surface still contacts the floor smoothly. The body still seals the tube opening completely. Unlike leaving tube ends open and unprotected, thin head plugs provide full protection at the thinnest possible profile.
Same PE (polyethylene) body and flexible grip as every ellipse tube plug in the range. Thin head ellipse tube plugs are molded from a single piece of PE. The body is identical to the flat head variant. Only the head is thinner.
The head covers the full elliptical cross-section at the minimum thickness that still provides structural integrity, floor contact, and a clean finished appearance. The PE surface is the same compound as flat and domed variants. The thin profile sits nearly flush with the tube edge.
Same variable-radius grip as flat head and domed ellipse tube plugs. The walls follow the elliptical contour with tight curvature at the pointed ends and gentler curvature at the wide center. The grip mechanism is independent of the head thickness. Thin head plugs hold just as firmly as flat head plugs in the same tube.
All three ellipse plug head profiles fit the same PE body. The choice is purely about the head: how much it protrudes, how it looks, and whether protrusion matters for stacking or clearance.
Flat head ellipse tube plugs have a standard-thickness head that sits flush with the tube end. Thin head reduces the head further. On non-stackable furniture where clearance is not a concern, flat head is the standard choice. On stackable furniture and tight-clearance assemblies, thin head provides the lower profile that prevents interference.
Domed ellipse tube plugs add a raised, rounded profile above the tube edge. Thin head does the opposite: it minimizes the profile. Domed is for decorative visible ends. Thin is for invisible, functional ends. The two are at opposite ends of the visibility spectrum. Note that domed uses 20 × 35 mm (not 20 × 40) for its larger size.
Open tubes on stackable furniture expose sharp metal edges that scrape against the next chair in the stack, damaging the finish. Open tube ends also collect debris during storage. Thin head ellipse tube plugs seal the end with minimal protrusion. The plug protects during stacking without affecting nesting geometry.
Thin head is currently available only on ellipse tube plugs. For round tubes, round tube plugs come in flat head only. The thin head option addresses the specific need for minimal-profile plugs on elliptical stackable seating, which is where the combination of stacking requirements and elliptical tubing is most common.
The thin PE head provides the same basic floor protection as standard flat head plugs. PE is smoother and softer than bare metal, adequate for most surfaces without scratching. The thinner head means a slightly smaller contact area, but the full elliptical footprint is still covered.
On scratch-sensitive floors like engineered hardwood or luxury vinyl, apply a round self-adhesive furniture pad to the thin head for dedicated PA6 protection. On rough hard surfaces like textured tile or stamped concrete, furniture slides with ABS surfaces handle the texture better than PE. On carpet and soft flooring, the thin PE head provides adequate contact without additional treatment. The key advantage of the thin head on any floor type is that the nearly flush profile does not catch on carpet fibers or floor transitions the way a thicker head might when furniture is dragged across surfaces.
Thin head ellipse tube plugs are designed for any application where an elliptical tube end needs to be sealed and protected with the least possible visible or physical protrusion.
Same elliptical cross-section, different head profiles. Choose the variant that matches your application.
15 × 30 and 20 × 40 mm. Minimal profile. Black, grey, white.
Anywhere elliptical tubing has tube ends that need sealing and protection with the absolute minimum visible or physical protrusion.
Restaurant chains, hotels, conference centers, banquet halls, and event venues where chairs stack between uses. Thin head ellipse tube plugs preserve the nesting tolerances that stackable furniture depends on. In environments with hundreds of stackable chairs, the reduced head profile across thousands of tube ends adds up to more reliable stacking, fewer jammed stacks, and less damage from forced stacking. Staff who stack chairs quickly between events need plugs that do not catch, snag, or prevent nesting. Thin head ellipse tube plugs eliminate that friction point. Available in bulk for manufacturing runs and facility-wide fit-outs. For commercial pricing, visit Business Solutions.
Furniture manufacturers who build stackable elliptical-tubed seating for the hospitality and institutional markets. Thin head ellipse tube plugs are specified at the design stage when stacking clearance is engineered to tight tolerances. The plug becomes part of the stacking specification rather than an afterthought. For chairs with splayed oval legs on the same product line, angled oval tube plugs handle the tilt correction. For floor-contact legs that also need PA6 protection, pair with self-adhesive furniture pads.
Thin head ellipse tube plugs require the same minimal maintenance as any standard tube plug. The reduced head profile makes the plug less visible, which means it can be easy to overlook during inspections. Make a deliberate check by running a finger across the tube end to confirm the thin head is still seated. The nearly flush profile means a missing plug is harder to spot visually than a missing flat or domed head.
On stackable commercial seating, inspect every 3 to 6 months. Stacking creates repeated compression at the plug head, and thin heads have less material to absorb that compression. If a thin head shows visible deformation from stacking stress, replace it. Thin head ellipse tube plugs are sold in multiples of 4, so keeping replacement stock readily on hand is practical for commercial environments. The PE surface does not stain, discolor, or absorb cleaning products or commercial sanitizers.
Ellipse Tube Plugs (Flat Head): standard flush finish for general use.
Domed Ellipse Tube Plugs: raised decorative finish for visible ends.
Round Self-Adhesive Furniture Pads: PA6 scratch protection on any plug head.
Round Self-Adhesive Furniture Glides: PA6 on ABS for glide performance.
| Specification | Details |
|---|---|
Product Type |
Tube Plug – Inner with Ribs (H2/Thin Head) |
Shape |
Ellipse Tube |
Materials |
PE (Polyethylene) |
Fit Style |
Ribbed friction-fit compression |
Floor Compatibility |
All hard and soft floors |
Furniture Compatibility |
Furniture legs, frames, displays, office and institutional furniture |
Leg Compatibility |
Metal and plastic tubing |
Sizes Available |
15×30 mm, 20×40 mm (fits 1–2 mm wall thickness) |
Color Options |
Black, Grey, White |
Installation Type |
Press-fit by hand or rubber mallet |
Key Benefits |
Low-profile look, secure fit, water resistance, no tools needed |
Indoor/Outdoor Use |
Indoor | Covered Outdoor | Uncovered Outdoor |
Recyclable |
Yes |
| Dimensions (W x L) | Tube Wall Thickness (T) | Head Height (H1) | Insert Depth (H) |
|---|---|---|---|
15 x 30 mm (0.59" x 1.18") |
1 – 2 mm (0.04" – 0.08") |
3 mm (0.12") |
12 mm (0.47) |
20 x 40 mm (0.78" x 1.57") |
1 – 2 mm (0.04" – 0.08") |
3 mm (0.12") |
12 mm (0.47) |
The thin head has a reduced head thickness compared to the standard flat head ellipse plug. Both sit close to the tube end, but the thin head reduces the visible protrusion to the minimum that still provides structural integrity. The difference is subtle but matters on stackable furniture and in tight-clearance applications where even a few millimeters of head thickness affect fit.
Yes. Stackable chairs need plugs that do not interfere with the nesting geometry. Thin head ellipse tube plugs add the least protrusion of any ellipse plug variant, which preserves the tight tolerances that stacking designs require. Standard flat head and especially domed head plugs can prevent clean stacking.
The PE surface is the same material, so the scratch resistance is identical. However, the thinner head distributes weight across a slightly smaller contact area. For dedicated floor protection, apply a round self-adhesive furniture pad to the thin head for PA6 coverage.
Yes. Both thin head and flat head use 15 × 30 and 20 × 40 mm. The domed variant uses 20 × 35 mm instead of 20 × 40 for its larger size. Thin head and flat head are interchangeable on the same tube; only the head profile differs.
Choose thin head when the plug must be as invisible as possible: stackable furniture, components that nest together, tight clearances between the tube end and an adjacent surface, or any design where a visible plug head detracts from the aesthetic. Choose flat head for general use where the standard head thickness is not a concern.
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