Ceramic Fiber Textiles
Furnace Door Sealing Rope
Code prefix DR
Furnace door sealing rope combines the structure of a braided packing with a flat tape section, so it can seal both a flat door face and a grooved seat. It is used on tunnel furnaces, baking ovens and oven doors. The tape portion sits between the door contact faces, so the metal faces are separated by a fiber layer, which buffers the closing action and reduces noise as well as sealing the gap.
- Continuous
- 1000°C
- 1832 °F
- Short peak
- 1260°C
- 2300 °F
- Construction
- Wire reinforced
- DR
Spec sheets are issued against the confirmed grade, with the test method named on the report.
01 — Product description
Product description
Furnace door sealing rope is suitable for high-temperature door sealing on tunnel furnaces, ovens and baking ovens. It combines the structural characteristics of high-temperature fiber packing and high-temperature fiber tape, and adapts to both flat and grooved door sealing conditions. The tape portion sits between the door contact faces and contacts through the high-temperature fiber structure, which buffers the closing action and reduces noise.
The product can be made into round, P-type (tadpole-shaped), and Ω-type (double-tail-shaped) structures, and can also be correspondingly called P-type sealing rope, high-temperature resistant sealing tadpole tape, and double-tail furnace door sealing rope.
Optional materials include fiberglass, ceramic fiber, soluble fiber, and basalt fiber, which can be selected and adapted according to the actual working temperature of the equipment.
Product parameters
| Item | Value |
|---|---|
| Spherical diameter | Customizable |
| Total width | Customizable |
| Applicable temperature range | 500°C~1000°C (determined by material selection) |
| Color | Natural color of the selected high-temperature resistant fiber material |
Application scope
Suitable for furnace door sealing scenarios in tunnel furnaces, ovens, baking ovens, coke ovens, chimney doors, and boiler equipment.
Working condition suitability and restrictions
The product is suitable for dry high-temperature static sealing conditions. The applicable temperature is determined by the selected fiber material. Long-term use beyond the material's temperature resistance limit is prohibited.
The product is not suitable for conditions involving strong acid or alkali corrosion, long-term liquid immersion, continuous high-speed airflow erosion, or high-frequency severe extrusion friction.
Usage precautions
- Match the corresponding material of sealing rope according to the actual working temperature, sealing structure, and working condition environment of the equipment.
- During installation, ensure fitting to the sealing surface, avoiding deviation and extrusion deformation, and preventing air leakage and heat leakage.
- Regularly inspect product wear, aging, and deformation status. In case of failure, replace promptly.
- All technical data are for reference only. Actual performance depends on usage conditions. Users should conduct their own suitability testing and comply with relevant safety regulations and standards.
02 — Characteristics
Rope body, tape face
The round body fills the groove; the flat face seals against the door, so one part covers both seat types.
Metal-to-metal separation
With the tape between the faces, the door closes onto fiber rather than steel, which cushions the impact.
Quieter closing
Buffering the door contact removes the ring of metal on metal, which matters on ovens in occupied buildings.
Replaceable seal
The rope is a consumable: it is renewed when the door stops closing evenly.
03 — Typical properties
Values typical, confirm against duty
| Test item | Value | Note |
|---|---|---|
| Construction | Combined section | |
| Applicable range | Determined by material selection | |
| Materials | Selected per duty | |
| Seat | Both door types | |
| Effect | Separates metal faces | |
| Colour | Natural, uncoated |
04 — Standard sizes
| Product code | Dimensions |
|---|---|
| DR-R | Round section, spherical diameter and total width customizable |
| DR-P | P-type (tadpole-shaped) section, size customizable |
| DR-O | Ω-type (double-tail-shaped) section, size customizable |
05 — Where it is used
- Tunnel furnace doors
- Baking and drying ovens
- Industrial oven doors
- Heat treatment chamber doors
- Replaceable door gaskets
Service limits
- Measure the groove and the door gap; the section is made to the seat.
- Renew the rope when the door no longer closes evenly, before the gap widens.
- Do not stretch the rope along its length during fitting; it will thin at the seal.
Related materials
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Furnace Door Sealing Rope
DR