Hospitality-grade floor protection · Sizing help before you order · Apply for a business account
Sizing help · Apply for a business account
Hospitality-grade floor protection · Sizing help before you order · Apply for a business account
Sizing help · Apply for a business account
On an ellipse tube end that’s on show, a flat plug falls short. This one curves out into a smooth dome, turning chair backs, armrest ends, and visible frame tops into a finished, rounded endpoint. Same press-fit PE body as the standard ellipse plug, just with a decorative head. Black, grey, and white.
We make this size in production runs, so there is none on the shelf today. Tell us how many you would want and you go on the list for it. When enough people ask for a size, we run it, and the people who asked hear about it first.
We stock a limited range of tube sizes and wall thicknesses. Tell us the size you need and we will confirm availability and pricing by email.
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Standard ellipse tube plugs seal and finish the tube end with a flat profile that sits flush. That handles floor-contact legs and general applications. But on visible, non-floor-contact tube ends where the ellipse profile is a deliberate design choice, a flat plug adds nothing to the aesthetic. Domed ellipse tube plugs replace the flat head with a smooth, rounded dome that curves outward from the ellipse tube edge, following the tapered contour of the ellipse. The dome creates a raised, finished endpoint that turns a plain tube end into a design statement.
Same PE construction and flexible body as standard ellipse tube plugs. Same press-fit installation. The only difference is the head profile: a smooth dome instead of a flat disc. Domed ellipse tube plugs are rounded head ellipse tube plugs for furniture where a decorative finish on visible ellipse tube ends adds the right finishing touch. : 15 × 30 mm and 20 × 35 mm. Black, grey, and white.
Same three measurements as all ellipse tube plugs: short axis (width), long axis (length), and wall thickness. Domed ellipse tube plugs are available in 15 × 30 and 20 × 35 mm. Pay particular attention to the 20 × 35 dimension: this is not the same as 20 × 40 mm.
Use calipers across the narrowest point of the ellipse opening, outside edge to outside edge. The short axis must be 15 or 20 mm for domed ellipse tube plugs.
Use calipers across the widest point, through the pointed ends. The long axis must be 30 mm (for the 15 mm short axis) or 35 mm (for the 20 mm short axis). If your long axis measures 40 mm, use a flat head or thin head ellipse plug instead.
Use calipers at the tube end. The 15 × 30 requires 1.5 to 2 mm wall. The 20 × 35 requires 1 to 2 mm wall.
Same press-fit installation as standard ellipse tube plugs. The domed head does not change the process. Align the pointed ends of the plug with the pointed ends of the tube, then press in. The dome faces outward.
Every benefit of a standard ellipse tube plug, plus a rounded decorative profile on visible tube ends. The National Wood Flooring Association (NWFA) recommends protective measures on all furniture legs, and domed ellipse tube plugs contribute by sealing the tube end even on non-floor-contact applications.
The primary reason to choose domed over flat or thin head. ellipse tubing is already a design-forward profile choice: sleeker and more dynamic than round or rectangular. A domed head amplifies that intent by adding a sculpted, raised endpoint. The dome follows the ellipse contour, curving smoothly from the wide center to the tapered pointed ends. Decorative ellipse tube plugs that complete the design language of contemporary ellipse furniture. The ellipse tube plugs rounded head that architects and designers specify for visible tube endpoints.
Same sealed end as flat head ellipse plugs. The dome does not affect the seal. Moisture, debris, and insects are kept out of the tube interior. On steel tubing, sealed ends prevent internal corrosion. Domed ellipse tube plugs protect the tube interior regardless of whether the tube end faces up, outward, or down. Unlike leaving furniture hardware unprotected, sealed ends extend frame life.
Same resonance reduction as flat head ellipse plugs. The PE body fills the ellipse tube opening and absorbs the vibration that hollow tubes amplify. The dome does not change the acoustic properties. Every sealed tube end reduces the cumulative metallic noise in environments with many metal-framed chairs or fixtures.
The rounded dome concentrates floor contact at the dome center instead of distributing weight across the full ellipse area. For floor-contact ellipse legs, use flat head ellipse tube plugs that spread load evenly. For a minimal-profile option on floor contact legs, thin head ellipse tube plugs sit nearly flush. Domed ellipse tube plugs are designed for the visible tube ends that do not touch the floor.
All ellipse plug variants share the same PE body. The choice comes down to head profile, tube size, and whether the tube end contacts the floor or faces outward.
Flat head ellipse tube plugs sit flush with the tube end. No protrusion, no visual accent. Available in 15 × 30 and 20 × 40 mm. Domed ellipse tube plugs add a gentle rounded curve above the tube edge. Choose flat for floor-contact legs, utilitarian tube ends, and 20 × 40 mm tubes. Choose domed for visible, decorative ends on 15 × 30 or 20 × 35 mm tubes.
Thin head ellipse tube plugs sit nearly flush with the tube end for a minimal-profile finish. Available in 15 × 30 and 20 × 40 mm. Thin head is the opposite of domed: minimal profile vs. raised profile. Choose thin for applications where the plug should be as unnoticeable as possible. Choose domed when you want the plug to be a visible design element.
Domed oval tube plugs fit oval tubes with rounded, blunt ends. Domed ellipse tube plugs fit ellipse tubes with pointed, tapered ends. Same decorative concept, different tube geometry. The domed profile on an ellipse plug tapers at the pointed ends, which an oval dome does not.
Domed round tube plugs fit round tubes. The dome on a round plug is symmetrical. The dome on an ellipse plug follows the asymmetric ellipse contour. Always match plug shape to tube shape.
Domed ellipse tube plugs are not recommended for floor contact because the dome concentrates weight at the center peak. For floor-contact ellipse legs on the same furniture, use flat head ellipse tube plugs that distribute weight across the full ellipse area. For additional PA6 scratch protection on any flat head plug, apply a round self-adhesive furniture pad to the plug head.
Same ellipse cross-section, different head profiles. Choose the variant that matches your application and tube size.
15 × 30 and 20 × 35 mm. Rounded decorative head.
| Fits Tube (W) | Fits Tube (L) | Tube Wall Thickness (T) |
|---|---|---|
| 15 mm (0.59″) | 30 mm (1.18″) | 1.5 to 2 mm (0.06″ to 0.08″) |
| 20 mm (0.79″) | 35 mm (1.38″) | 1 to 2 mm (0.04″ to 0.08″) |
Tube wall thickness is a fit requirement, not a tolerance.
| Specification | Detail |
|---|---|
| Material | Polyethylene, a tough low-friction plastic |
| Sizes | 2 sizes |
| Width (W) | 15 to 20 mm (0.59″ to 0.79″) |
| Length (L) | 30 to 35 mm (1.18″ to 1.38″) |
| Height (H) | 13 mm (0.51″) |
| Head height (H1) | 6 mm (0.24″) |
| Tube wall thickness (T) | 1 to 2 mm (0.04″ to 0.08″) |
| Mounting | Pushes into the tube, held by ribs |
| Colors | Black, Gray, White |
| Floor compatibility | Hollow tube legs |
| Minimum order | Sold in a minimum of 4, then any quantity you need |
The 20 × 35 mm dimension matches specific ellipse tubing used in furniture where the domed profile is most commonly specified. The flat head ellipse plug comes in 20 × 40 mm, and the thin head variant also uses 20 × 40 mm. But the domed version fits 20 × 35 mm tubing specifically. Measure your tube carefully: 20 × 35 and 20 × 40 are different sizes and the plugs are not interchangeable.
Yes. The dome rises above the tube edge, adding a visible raised profile. On a flat head plug, the head sits flush with the tube end. The domed version extends outward by several millimeters. If clearance is tight (stacking furniture, close-mounted components), confirm the dome protrusion does not interfere before choosing domed over flat or thin head.
No. ellipse and oval tubes have different end profiles. ellipse tubes have pointed, tapered ends. Oval tubes have rounded, blunt ends. A domed ellipse plug will gap at the blunt ends of an oval tube. For domed oval plugs, see domed oval tube plugs (15 × 40, 20 × 40, 25 × 50 mm).
Yes. Both fit the same 15 × 30 mm ellipse tube. The difference is only the head profile: flat sits flush, domed curves outward. You can use flat head plugs on the floor-contact legs and domed plugs on the visible non-contact ends of the same chair, as long as all legs use 15 × 30 mm ellipse tubing.
The 15 × 30 mm is the more widely used ellipse size, so it supports black, grey, and white. The 20 × 35 mm is a more specialized specification with lower demand, currently available in black and white. For grey in 20 × 35 mm or custom colors, contact Business Solutions.
Domed Ellipse Tube Plugs
Outfitting a hotel, restaurant, school, healthcare facility, or large furniture build? Superior Glide supports volume orders with bulk pricing tiers, free physical samples, and dedicated quote pricing for accounts placing larger orders.
Bulk pricing tiers, net terms for qualified buyers, and dedicated support for facility managers and procurement teams.
Hold the product, test the fit, check the finish. We ship samples free so you can evaluate before committing to a full order.
For orders above standard volume tiers, we’ll prepare a custom quote with consolidated shipping and your account’s tier pricing.
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