1. Product Introduction
Flame retardant cable ties are manufactured from specially flame-retardant modified PA66 material and possess the highest level of fire safety performance.The product has passed UL94 V-0 certification and can extinguish itself quickly after the source of flame is removed without producing molten droplets that could ignite other materials.This characteristic effectively suppresses flame propagation and significantly reduces smoke generation, making it especially suitable for critical locations with very high fire-safety requirements such as rail transit, underground tunnels, offshore oil platforms, ship compartments, and power control systems.
Technical Specifications of Flame Retardant Cable Ties
V-0 flame retardant rating: the highest flame retardant level; the material self-extinguishes within a very short time after the flame source is removed and does not produce burning droplets.
Material selection: flame-retardant grade nylon PA66 is chosen as the raw material, which maintains excellent mechanical properties while having good high-temperature resistance.
Safety and environmental features: flame-retardant cable tie meets low-smoke halogen-free standards; it significantly suppresses smoke generation during combustion and prevents the release of toxic halogen gases.
Excellent mechanical performance: the product’s rated tensile strength ranges from 8 to 100 kilograms, ensuring long-lasting and secure bundling.
Flexible size configuration: a full range of sizes is available to suit fixing needs for various cables, pipes and hoses, and customized production is supported.
Diverse color options: standard colors include black and natural, and special colors can be provided according to customer requirements.
Specifications Detail
| Type | Length | Width (mm) | Max. Bundle Dia. (mm) | Min tensile strength |
|---|---|---|---|---|
| WD-3x100FT | 4″ / 100 mm | 2.5 | 22 | 18 lbs / 8 Kgs |
| WD-3x150FT | 6″ / 150 mm | 2.5 | 35 | 18 lbs / 8 Kgs |
| WD-4x200FT | 8″ / 200 mm | 3.6 | 50 | 40 lbs / 18 Kgs |
| WD-4x300FT | 12″ / 300 mm | 3.6 | 80 | 40 lbs / 18 Kgs |
| WD-5x200FT | 8″ / 200 mm | 4.8 | 50 | 50 lbs / 22 Kgs |
| WD-5x250FT | 10″ / 250 mm | 4.8 | 65 | 50 lbs / 22 Kgs |
| WD-5x280FT | 11″ / 280 mm | 4.8 | 82 | 50 lbs / 22 Kgs |
| WD-5x300FT | 12″ / 300 mm | 4.8 | 82 | 50 lbs / 22 Kgs |
| WD-5x380FT | 15″ / 380 mm | 4.8 | 102 | 50 lbs / 22 Kgs |
| WD-5x400FT | 16″ / 400 mm | 4.8 | 105 | 50 lbs / 22 Kgs |
| WD-8x300FT | 12″ / 300 mm | 7.6 | 82 | 100 lbs / 45 Kgs |
| WD-8x380FT | 14.6″ / 370 mm | 7.6 | 102 | 100 lbs / 45 Kgs |
3. Flame-retardant Performance Testing
The flame-retardant cable ties V-0 rating test follows a strict procedure, and the main steps include:
- Sample preconditioning: Standard size specimens are divided into two groups and preconditioned for the specified time in a temperature-humidity chamber (23℃/50% RH) and in a 70℃ oven respectively to evaluate material performance under different conditions.
- Test setup: The treated samples are hung vertically inside the burning test chamber, with their lower ends kept at a specified distance from the burner nozzle and dry, defatted cotton placed below to collect any possible dripping combustion products.
- Burning test: A calibrated Bunsen burner flame is applied twice for 10 seconds each to the center bottom of the sample, with the interval between the two applications depending on the sample’s residual glow extinguishing time. Record precisely the flaming time after removal of the flame source and the afterglow time without flame for each application.
- Observations and records: The sample burning state is monitored throughout, focusing on whether burning droplets that carry flame are produced and whether any such droplets ignite the cotton below.
- Result determination: To meet the V-0 rating, the sample must satisfy: single afterflame time ≤ 10 seconds, total afterflame time across five tests ≤ 50 seconds, and no flaming droplets that ignite the cotton pad.
Based on the above tests, fire rated cable ties can maintain stable mechanical and fire-retardant performance in high-safety applications.
4. Typical Application Areas
V0-rated flame retardant cable ties can be widely used in environments with strict fire-safety requirements, including:
- Rail transit and subway tunnels: In enclosed underground spaces and vehicle cabins, fire resistant cable ties, with their low-smoke halogen-free characteristics, help maintain visibility and reduce toxic gas release during a fire, buying valuable time for evacuation.
- Oil and gas platforms: For offshore platforms facing high corrosion and potential explosion risks, fire rated cable ties provide top-level flame protection while corrosion resistance ensures long-term reliable protection of critical instruments and control harnesses in harsh environments.
- Ships and port equipment: In cramped ship compartments with complex escape routes, fire proof cable ties effectively suppress flame spread along cable bundles and prevent a small fire from developing into a ship-wide disaster, making them a key detail in protecting lives at sea.
- Data centers and financial server racks: To protect servers carrying core business and data, fire rated zip ties are used to organize high-density cabling inside racks. Their self-extinguishing property can prevent electrical faults from causing flames to propagate along bundles and avoid large direct and consequential losses.
5. Comparison with Other Flame-retardant Grades of Cable Ties
| Comparison Item | V0 Grade (Nylon 66 Fire Resistant Cable Ties) | V2 Grade (Nylon Fire Proof Cable Ties) | HB Grade (PE Cable Ties) |
|---|---|---|---|
| Flame retardant standard (UL94) | V0 (highest grade): self-extinguishes within 30 seconds after flame removal, no dripping | V2 (medium grade): self-extinguishes within 60 seconds after flame removal, dripping allowed | HB (lowest grade): can only burn slowly in a horizontal orientation |
| Main material | Modified flame-retardant Nylon 66 (PA66) | Standard Nylon 66 | Polyethylene (PE) |
| Flame retardant effect | Excellent: very low flame spread rate | General: slight continued burning | Weak: likely to keep burning under strong fire sources |
| Mechanical strength | High tensile, high toughness, suitable for industrial fastening | Relatively high tensile, slightly inferior to V0 | Low tensile, suitable for light-duty situations |
| Self-extinguishing time | ≤30 s, no molten drops | ≤60 s, molten drops allowed | No strict self-extinguishing requirement |
| Smoke and toxicity | Low smoke, halogen-free and environmentally friendly | Moderate smoke, may contain halogens | High smoke, contains carbon black and organic residues |
| Typical application scenarios | Electrical control cabinets, rail transit, fire protection systems, high-temperature electrical equipment | General industrial wiring and equipment bundling | Logistics transport, temporary cable fixing |
| Price level | Higher | Medium | Low |
| Safety rating summary | ⭐⭐⭐⭐⭐ (industrial-grade fire protection) | ⭐⭐⭐ (basic fire protection) | ⭐ (not fire-resistant) |
Comprehensive Guide to Flame-retardant Grades
V0 grade fire proof cable ties: specially designed for electrical configurations and communication systems with the most stringent fire-safety requirements. These products demonstrate excellent flame-retardant characteristics, can self-extinguish after flame removal, and effectively suppress smoke and toxic gas release.
V2 grade nylon fire rated zip ties: meet basic fire-safety standards for general industrial environments and strike a good balance between cost and performance. Note that they may produce burning droplets in open flame conditions.
HB grade PE cable ties: this grade of material has not been treated with flame-retardant additives and does not provide effective flame resistance. They are typically recommended for temporary wiring and non-critical bundling where no specific fire-safety requirements exist.
6. Frequently Asked Questions (FAQ)
- Q1: What does UL94 V-0 flame retardant rating mean?
- A1: UL94 is a material flammability standard developed by UL. V-0 indicates that the material extinguishes within 30 seconds after the flame source is removed and produces no burning droplets, and it is one of the highest rating levels.
- Q2: Are fire rated cable ties halogen-free?
- A2: Yes, this product uses halogen-free flame retardants and does not emit halogen gases during combustion, making it more environmentally friendly.
- Q3: Can fire resistant cable ties be customized in color and specifications?
- A3: Yes, subject to minimum order quantities, existing sizes and black, natural or colored cable ties can be customized.