Manlid Seal (1350 Style)

Manlid Seal (1350 Style)

Core Features

  • Elastomeric Core with PTFE Shield: Features a high-resiliency core (typically EPDM or Silicone) wrapped in a 100% Virgin PTFE film or envelope to combine elastic recovery with chemical invincibility.
  • Universal Chemical Barrier: The PTFE outer layer provides a near-universal 0–14 pH resistance, shielding the seal from aggressive solvents, acids, and alkalis during transport.
  • Superior Compression Recovery: Unlike solid PTFE seals which “cold flow” and lose their shape, the internal elastomeric core acts as a high-tension spring, maintaining a constant seal even under varying bolt loads.
  • Low-Friction Surface: The naturally “slick” PTFE skin prevents the seal from sticking to the manlid or the tank neck, ensuring easy opening and preventing gasket tearing during maintenance.
  • High-Purity & Non-Contaminating: Meets FDA 21 CFR 177.1550 standards, making it the industry standard for food-grade, pharmaceutical, and high-purity chemical transport.
  • Temperature Versatility: Maintains its sealing “bite” across a wide range of climates and cargo temperatures, typically from -40°C to +150°C.

At Kriloha Ltd., we understand that in the global logistics chain, the “Manlid” is the most vulnerable point of a tank. Between thermal expansion during transit and the mechanical stresses of loading and unloading, a standard rubber seal will eventually degrade or “bond” to the metal. The Kriloha Manlid Seal (SUNWELL 1350 Style) is our engineered answer for high-integrity transport. As a premier global supplier of industrial seals, Kriloha Gaskets has perfected the “Composite Core” technology required to keep your cargo secure across thousands of miles.

The architecture of the SUNWELL 1350 style is based on Structural Hybridization. We utilize a precision-molded EPDM or Silicone core to provide the “Memory”—this ensures that when the manlid is clamped down, the seal pushes back with enough force to handle internal pressure surges. This core is then encapsulated in a seamless PTFE film. At Kriloha, we ensure the PTFE wrap is applied with zero wrinkles or voids, creating a perfectly smooth sealing surface that prevents “wicking” or cargo entrapment.

Manufacturing these seals at Kriloha involves strict dimensional calibration. Because manlid grooves vary by manufacturer (such as Perolo or Fort Vale), we produce these seals in specific cross-sections (e.g., 14mm x 14mm or 10mm x 15mm) to ensure a snug, “interference fit” in the groove. This prevents the seal from falling out when the lid is inverted. By choosing Kriloha Ltd., you are investing in a seal that reduces the risk of cargo contamination and eliminates the “sticking” issues that plague traditional rubber gaskets, ensuring the long-term safety and efficiency of your fleet.

Primary Use Cases

  • ISO Tank Containers: The standard sealing solution for manlid covers on tanks transporting hazardous and non-hazardous bulk liquids.
  • Road Tankers & Rail Wagons: Providing a robust, vibration-resistant seal for mobile transport vessels.
  • Chemical Storage Tanks: Ideal for top-entry manways where frequent opening and closing are required for sampling or cleaning.
  • Food & Beverage Transport: Ensuring zero-taint and zero-leach containment for juices, oils, and dairy products.
  • Offshore Chemical Tanks: Reliable sealing for aggressive oilfield chemicals in harsh marine environments.
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FAQs

Why use a PTFE-wrapped seal instead of a standard rubber manlid gasket?

Standard rubber gaskets can be attacked by chemicals or “stick” to the lid, leading to tears and leaks. The PTFE shield on a SUNWELL 1350 style seal provides a chemical-proof, non-stick surface that lasts significantly longer.

Is this seal suitable for vacuum during unloading?

Yes. The internal elastomeric core provides enough structural rigidity to prevent the seal from being displaced or “sucked in” during vacuum-assisted unloading operations.

How do I choose between an EPDM core and a Silicone core?

EPDM Core: Best for general chemicals, acids, and alkalis.

Silicone Core: Best for high-purity food-grade cargo and extreme cold/heat environments.

Are these seals reusable?

While they are highly durable, Kriloha recommends inspecting the PTFE skin after every trip. If the PTFE is scratched, thinned, or delaminated, the seal should be replaced to prevent the cargo from attacking the rubber core.

How do I ensure the seal stays in the manlid groove?

Kriloha manufactures these seals to a precise “Over-Sized” tolerance. They are designed to be “pressed” into the groove, where the friction of the elastomeric core holds them in place without the need for adhesives.

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