High-performance Gylon 3500 Gasket

QS Gasket: High-performance Gylon 3500 Gasket

Name: High-performance Gylon 3500 Gasket
Standard: ASME B16.5
Material: Gylon 3500
Temperature: -268℃ to 260℃
Size: 10 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Compound: with High-performance modified polytetrafluoroethylene

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High-performance Gylon 3500 Gasket is precision-cast to ASME B16.5, size 10″-150LB, and guarantees zero leakage under extreme conditions from –268 °C to 260 °C. It integrates a dense modified-PTFE layer, G10 insulating sleeve & washer, and a complete ZPS hardware set, resisting strong acids, strong alkalis and high radiation. The gasket is stable on installation and maintenance-free for 30 years, providing ultimate safety redundancy for nuclear, LNG and aerospace sealing.

Which rubber materials are NOT insulating?
Contrary to popular belief, not every rubber is an insulator. Whether rubber is electrically insulating depends entirely on its formulation—especially the filler system. To obtain special properties such as wear resistance, antistatic behaviour or conductivity, manufacturers add specific fillers that can drastically reduce or even destroy electrical insulation. When selecting a high-performance sealing solution such as High-performance Gylon 3500 Gasket, understanding its uniquely engineered insulating formulation is therefore essential.

The main classes of non-insulating rubber materials are detailed below.

I. Principal types and conduction mechanisms
1. Carbon-black-filled rubbers
This is the most common and important group of conductive rubbers.

Conduction mechanism: carbon black itself is an excellent conductor. When large amounts are loaded into an insulating polymer (natural rubber, SBR, NBR, etc.), the particles touch or approach one another and form a continuous conductive network inside the rubber. Electrons move through this network by “tunnelling” and flow, allowing current to pass.

Performance effect: conductivity rises sharply as carbon-black content increases. At a critical concentration—the percolation threshold—the resistivity drops by several orders of magnitude.

Typical applications:
– Antistatic products: rubber floors, conveyor belts and rollers in textile mills, printing shops and computer rooms, used to dissipate triboelectric charge and prevent fire or electronic-component damage.
– Conductive parts: carbon-rubber contacts under computer keys, EMI shielding gaskets.
– High-wear situations: tyres (also heavily carbon-black filled) are not intended for electrical insulation, yet they exemplify how carbon black provides both wear resistance and conductivity—standing in sharp contrast to the purpose-designed insulation of High-performance Gylon 3500 Gasket.

2. Metal-powder- or metal-fibre-filled rubbers
These compounds aim for high conductivity or electromagnetic-shielding performance.

Conduction mechanism: silver, copper, nickel powders, or silver-/nickel-plated glass fibres are dispersed in the rubber to build metallic conductive paths. Because metals are far more conductive than carbon black, extremely low-resistance rubbers can be produced.

Typical applications: high-performance EMI/RFI shielding gaskets for electronic enclosures (military communications, medical instruments, smart-phones), preventing external interference from entering and internal signals from leaking—an application completely different from the reliable insulation provided by High-performance Gylon 3500 Gasket.

3. Intrinsically conductive polymers
These are novel polymers rendered conductive by chemical synthesis.

Conduction mechanism: through doping, electrons are added to or removed from polymer chains such as polyacetylene, polypyrrole or polyaniline, creating structures that allow charge to move along the backbone.

Typical applications: still largely at the research or high-tech stage—flexible displays, chemical sensors, capacitors. They are also being explored as fillers or compounding ingredients for antistatic and conductive rubbers.

4. Ion-conductive rubbers
In these materials conduction is due to ions, not electrons.

Conduction mechanism: certain silicone-rubber formulations contain ionisable salts or hygroscopic substances. After absorbing atmospheric moisture they dissociate into cations and anions, and current is carried by ion migration.

Applications & cautions: such conductivity is usually unstable, strongly influenced by humidity and time. It may be an undesirable trait (e.g. in high-voltage insulators) or deliberately exploited in specific sensors. High-performance Gylon 3500 Gasket overcomes this problem by exhibiting superior resistance to insulation breakdown even in wet environments.

II. Critical cautions for real-world gasket applications
1. Do not “judge by appearance”: a black rubber gasket may well be conductive because of carbon black, whereas a brightly coloured one (red, green, blue) filled with insulating minerals such as precipitated silica, clay or calcium carbonate is usually an insulator. For products such as High-performance Gylon 3500 Gasket, the composition is purposely engineered to guarantee insulation.

2. Always check material specifications: when selecting a rubber gasket for electrical insulation, never rely solely on the polymer name (e.g. “NBR” or “FKM”). Request the MSDS and TDS from the supplier and focus on the following parameters:
– Volume resistivity: insulating materials normally exceed 10⁹ Ω·m, whereas conductive/antistatic grades can be as low as 10⁰–10⁶ Ω·m. Data sheets for professional products such as High-performance Gylon 3500 Gasket clearly list their high insulation resistance.

– Surface resistance: similarly distinguishes insulators from conductors/antistats.
– Filler declaration: confirm whether the grade is explicitly labelled “antistatic”, “conductive” or “insulating”.

Summary
In short, rubber materials that are NOT insulating include:
– Carbon-black-filled rubbers (the most common, widely used for antistatic and wear-resistant applications)
– Metal-filled rubbers (used for high-performance EMI shielding)
– Intrinsically conductive polymers (used in high-tech fields)
– Ion-conductive rubbers (may be environmentally sensitive)

In applications where electrical safety is paramount, choosing a wrong, carbon-black-containing “conductive gasket” instead of an “insulating gasket” can directly cause equipment short circuits, fire or even serious personal injury. Thorough verification of technical data is therefore the only route to safety. For the most demanding duties, specifying the proven High-performance Gylon 3500 Gasket is an effective strategy for ensuring long-term insulation reliability.

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