Domed oval tube plugs add a smooth, rounded decorative profile to hollow oval furniture legs instead of a plain flat end. The dome curves outward from the oval tube edge, creating a raised, finished endpoint on chair backs, armrest ends, exposed frame tops, and any visible oval tube end. Same PE construction and flexible body as standard oval tube plugs. Same press-fit installation. Rounded head oval tube plugs for furniture where a decorative finish adds visual detail. 3 sizes: 15 × 40, 20 × 40, and 25 × 50 mm. Black and grey. Sold in multiples of 4.
Not sure what size? See the size chart ↓
📦 Sold in packs of 4 — quantity adjustable at checkout
Standard oval tube plugs seal and finish the tube end with a flat profile that sits flush. That is enough for floor-contact legs and general use. But on visible, non-floor-contact tube ends where appearance matters, a flat plug adds nothing to the look. Domed oval tube plugs replace the flat head with a smooth, rounded dome that curves outward from the oval tube edge. The dome creates a raised, finished endpoint that turns an exposed oval tube end into a deliberate design detail.
Same PE construction and flexible body as standard oval tube plugs. Same press-fit installation. The only difference is the head: a smooth dome instead of a flat disc. Domed oval tube plugs are rounded head oval tube plugs for furniture where a decorative finish on visible oval tube ends adds the right visual detail. 3 sizes: 15 × 40, 20 × 40, and 25 × 50 mm. Black and grey. Sold in multiples of 4.
Domed oval tube plugs are available in 3 sizes that cover the most common oval tubing dimensions where a decorative head is needed. Each size has a dome proportional to the oval cross-section. The right domed oval tube plug matches your tube’s short axis, long axis, and wall thickness.
Wall: 1 to 1.5 mm. A more elongated oval with a proportionally narrow dome. This size exists only as a domed variant (no flat head version available). For lightweight chair components, display fixture tubing, and narrow oval structural members. Black only.
Wall: 1.5 to 2 mm. One of the most popular oval tubing sizes for commercial dining chairs and bar stools. The dome adds a decorative finish to chair back uprights and armrest ends on the same tubing that uses flat head plugs on the floor-contact legs. Black and grey.
Wall: 1.5 to 2 mm. The largest domed oval. For heavy-duty commercial seating, wide frame members, and prominent visible tube ends where the dome makes the strongest decorative impact. Black and grey.
For flat head oval plugs on floor-contact legs, see oval tube plugs (7 sizes, 10 × 33 to 30 × 50 mm). For extended insertion depth on 15 × 30 mm tubes, see extended oval tube plugs. For angled oval legs, see angled oval tube plugs. For custom sizes or colors, contact Business Solutions.
Same three measurements as all oval tube plugs: short axis (width), long axis (length), and wall thickness. Domed oval tube plugs are available in 15 × 40, 20 × 40, and 25 × 50 mm. If your tube does not match one of these three sizes, check standard flat head oval tube plugs for a compatible size.
Use calipers across the narrowest point of the oval opening, outside edge to outside edge. The short axis must be 15, 20, or 25 mm for domed oval tube plugs.
Use calipers across the widest point. The long axis must be 40 or 50 mm. Match the short and long axis combination to one of the three available sizes.
Use calipers at the tube end. The 15 × 40 requires 1 to 1.5 mm wall. The 20 × 40 and 25 × 50 require 1.5 to 2 mm wall. The thicker walls on the larger sizes support the heavier furniture they typically appear on.
Same press-fit installation as standard oval tube plugs. The domed head does not change the process. Align the short axis to the short axis and the long axis to the long axis, then press in. The dome faces outward. Domed oval tube plugs press in by hand at both available wall thickness ranges.
Every benefit of a standard oval tube plug, plus a rounded decorative profile that transforms exposed oval tube ends from unfinished holes into intentional design details. The National Wood Flooring Association (NWFA) recommends protective measures on all furniture legs, and domed oval tube plugs contribute by sealing the tube end even on non-floor-contact applications.
The primary reason to choose domed over flat. The rounded profile adds visual softness and intentional design to exposed oval tube ends. On retail fixtures, restaurant seating, hospitality furniture, and showroom displays, visible tube ends finished with domed oval tube plugs communicate attention to detail. The dome follows the oval contour, creating a smooth raised endpoint that complements the curved aesthetic of oval tubing. These are the decorative oval tube plugs that design-conscious environments demand. The oval tube plugs decorative head that transforms a plain tube end into a finishing detail.
Same sealed end as flat head oval plugs. The domed profile does not affect the seal. Moisture, debris, and insects are kept out of the tube interior. On steel tubing, this prevents the internal corrosion that weakens the structure from the inside out. Domed oval tube plugs protect the tube interior regardless of orientation. Unlike leaving furniture hardware unprotected, sealed ends extend the life of the frame.
Same resonance reduction as flat head oval plugs. The PE body fills the oval tube opening and absorbs the vibration that hollow tubes amplify. In environments with many metal-framed chairs, every sealed tube end reduces the cumulative metallic noise. Domed oval tube plugs provide the same acoustic benefit as flat head plugs with a decorative visual upgrade on the visible ends.
The rounded dome concentrates floor contact at the dome center instead of distributing weight across the full oval area. For floor-contact legs, use flat head oval tube plugs that spread load evenly. For floor contact with additional scratch protection, apply a round self-adhesive furniture pad to a flat head plug. Domed oval tube plugs are designed for the visible tube ends that do not touch the floor.
Same PE (polyethylene) body and flexible grip as every oval tube plug in the range. The only difference is the head profile. Domed oval tube plugs are molded from a single piece of PE with no joints, seams, or separate components. Domed plugs for oval furniture legs that combine a decorative rounded head with an engineered friction-fit body.
The dome curves outward from the oval tube edge in a smooth, seamless arc that follows the oval contour. The dome is proportional to the tube size: subtler on the 15 × 40 mm, more prominent on the 25 × 50 mm. Both are smooth, molded surfaces with no seam lines. The same PE compound that resists UV, chemicals, moisture, and impact across all our plug products.
Same dual-radius grip as standard oval tube plugs. The walls follow the oval contour and grip both the tight curve (short axis) and the gentle curve (long axis) simultaneously. No adhesive, no screws, no tools beyond an optional rubber mallet.
All oval plug variants share the same PE body. The choice comes down to appearance, floor contact needs, and the visual effect you want on the exposed tube end.
Flat head oval tube plugs sit flush with the tube end. No protrusion, no visual accent. Domed oval tube plugs add a gentle rounded curve above the tube edge. Choose flat for floor-contact legs and utilitarian applications. Choose domed for visible, decorative tube ends where the rounded profile adds design value.
Extended oval tube plugs have a deeper insertion body for extra grip in thin-walled tubes. They use a flat head, not domed. Extended solves a grip problem. Domed solves an appearance problem. If you need both deeper grip and a decorative head, no combined variant exists currently.
Angled oval tube plugs correct leg tilt on splayed oval legs. They use a flat, angled base for floor contact. Domed oval tube plugs have a raised, rounded head for decorative non-floor-contact use. Different purposes, different ends of the furniture.
Domed round tube plugs fit round tubes. Domed oval tube plugs fit oval tubes. Same decorative concept, different tube shapes. The dome on an oval plug follows the oval contour rather than a circular one. Always match plug shape to tube shape.
Domed oval tube plugs are designed for visible, non-floor-contact oval tube ends where a decorative finish adds value. The dome is an aesthetic choice, not a functional floor-contact solution.
Same oval cross-section, different head styles, depths, and features. Choose the variant that matches your application.
3 sizes. Rounded decorative head. Black, grey.
Anywhere oval tubing has visible, non-floor-contact tube ends that deserve a finished, decorative look. Domed oval tube plugs add the rounded finishing detail that flat head plugs cannot provide.
Restaurant and hospitality seating where chair backs face guests. Office and conference room chairs with exposed oval back uprights. Residential dining chairs with oval metal frames. Domed oval tube plugs pair with flat head plugs on the same chair: domed on the visible back, flat on the floor-contact legs. For floor-contact legs that also need scratch protection, pair with round self-adhesive furniture glides.
Retail display racks, showroom fixtures, exhibition frames, and architectural elements with oval tubing. The dome adds a premium quality signal to any visible oval tube end. Available in bulk for manufacturing runs and commercial fit-outs. For commercial pricing, visit Business Solutions. For rough hard floors where the furniture also needs floor protection on the contact legs, furniture slides with ABS surfaces handle textured surfaces.
Domed oval tube plugs require almost no maintenance. The PE material does not degrade under normal indoor or outdoor conditions. The domed surface can be wiped clean with a damp cloth. The smooth dome sheds dust and fingerprints more easily than textured surfaces. Check periodically that the plug remains seated flush with the tube edge around the entire oval perimeter. The dome is the most exposed point: inspect for damage from impact or stacking contact. In high-traffic hospitality and retail environments, the dome may accumulate fingerprints more visibly than a flat head because the curved surface catches light at different angles. A quick wipe restores the clean finish.
On commercial furniture that gets moved, stacked, or handled frequently, inspect every 3 to 6 months. On static fixtures and display structures, an annual visual check is enough. These plugs are sold in multiples of 4, so keeping spares on hand for commercial environments is practical. If a dome is chipped or deformed, replace the plug. The PE surface does not stain, discolor, or absorb cleaning products. On the 25 × 50 mm size, the larger dome creates a more prominent visual that shows damage more readily than the smaller 15 × 40 mm dome, so inspect the larger size more carefully on furniture that gets rough handling.
Oval Tube Plugs (Flat Head): flush finish, 7 sizes from 10 × 33 to 30 × 50 mm. The right choice for floor-contact legs on the same furniture that uses domed oval tube plugs on the visible ends.
Domed Head Round Tube Plugs: Ø 16 and 26 mm. Same decorative concept for round profiles.
| Specification | Details |
|---|---|
Product Type |
Tube Plug – Inner with Ribs (H2/Rounded Head) |
Shape |
Oval Tube |
Materials |
PE (Polyethylene) |
Fit Style |
Ribbed friction-fit compression |
Floor Compatibility |
All hard and soft floors |
Furniture Compatibility |
Chairs, tables, displays, office and healthcare furniture |
Leg Compatibility |
Metal and plastic oval tubing |
Sizes Available |
15 × 40 mm, 20 × 40 mm, 25 × 50 mm |
Color Options |
Black, Grey |
Installation Type |
Rounded finish, soft contact, tight grip, clean look |
Key Benefits |
Rounded aesthetic, secure fit, easy installation, floor protection |
Indoor/Outdoor Use |
Indoor | Covered Outdoor | Uncovered Outdoor |
Recyclable |
Yes |
| Tube Dimensions (W x L) | Tube Wall Thickness (T) | Head Height (H1) | Insert Depth (H) |
|---|---|---|---|
15 x 40 mm (0.59" x 1.57") |
1.5 – 2 mm (0.06" – 0.08") |
7 mm (0.28") |
13 mm (0.51") |
20 x 40 mm (0.79" x 1.57") |
1.5 – 2 mm (0.06" – 0.08") |
10 mm (0.39") |
12 mm (0.47") |
25 x 50 mm (0.98" x 1.97") |
1.5 – 2 mm (0.06" – 0.08") |
13 mm (0.51") |
14 mm (0.55") |
The flat head sits flush with the oval tube end. The domed head curves outward as a smooth, raised profile that follows the oval contour. The dome adds visual depth and a finished, intentional look to exposed tube ends. On chair backs and armrest ends, the dome signals that the tube end was designed, not just capped.
Not ideal. The rounded profile concentrates floor contact at the dome center instead of distributing weight across the full oval area. For floor-contact oval legs, use standard flat head oval tube plugs. Domed oval tube plugs are designed for visible, non-floor-contact tube ends.
The 15 × 40 mm is a specialized size that only exists as a domed variant (no flat head version). Current demand supports black only. The 20 × 40 and 25 × 50 mm sizes come in both black and grey. For white or custom colors, contact Business Solutions.
Yes. Domed oval tube plugs work best on visible tube ends like chair back uprights and armrest tubes where the rounded profile adds a finished look. For floor-contact legs on the same piece, use standard oval tube plugs or oval tube plugs with a pad slot for PA6 protection. The oval profile dimensions match across the range, so all oval plugs seat into the same tube openings.
No. They are different tube sizes. 15 × 40 has a longer oval profile (40 mm long axis) than 15 × 30. The domed 15 × 40 plug only fits 15 × 40 mm oval tubing. It will not fit 15 × 30 mm tubes. Measure both axes of your tube to confirm the correct size.
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