With the continuous upgrade of computing power density in data centers, immersion liquid cooling has become the mainstream high-efficiency and energy-saving heat dissipation method for high-end computer rooms. The liquid cooling cabinet realizes immersive heat dissipation through a closed cavity. As the core sealing structure, the large flange end face is responsible for isolating cooling liquid and blocking external moisture and dust. Its sealing reliability directly determines the operational stability and service life of the equipment. Large-size flange planes pose high challenges for uniform compression. Conventional rubber gaskets tend to swell, age and suffer stress relaxation after long-term immersion, resulting in micro-leakage and sealing failure, raising maintenance costs and bringing equipment shutdown risks. Therefore, a professional and long-lasting sealing solution is urgently required.
Targeting the stringent working conditions of immersion liquid cooling cabinets, Mascot Sealing, backed by years of R&D and manufacturing experience in sealing components, has launched a dedicated long-term static sealing solution with large-specification PTFE flat gaskets. It precisely meets the sealing requirements of large flange end faces and thoroughly addresses the drawbacks of traditional sealing products.
Polytetrafluoroethylene (PTFE) features outstanding chemical inertness, fully compatible with various liquid cooling media such as fluorinated liquids and synthetic coolants. It resists corrosion, swelling and deterioration under long-term immersion, fundamentally eliminating sealing failures caused by medium erosion. In addition, the material boasts an ultra-wide operating temperature range from -180°C to 260°C, stably coping with temperature fluctuations in computer rooms and preventing hardening or cracking of seals, perfectly fitting the 24/7 non-stop operation mode of data centers.
Compared with ordinary sealing gaskets, Mascot’s large-size PTFE flat gaskets are integrally compression-molded without splicing seams, completely eliminating leakage risks inherent in split spliced gaskets. Customized strictly in accordance with standard dimensions of liquid cooling cabinet flanges, they match the roughness requirement of Ra≤3.2μm on sealing surfaces to achieve full and tight fitting across the entire large plane. By optimizing gasket density and thickness parameters, the compression rate and structural support strength are well balanced, effectively solving the industry-wide problem of uneven stress and incomplete local compression on large flange end faces. Modified filled formulas are also available to improve creep resistance and cold flow resistance, greatly enhancing long-term compression stability and avoiding extrusion deformation or falling-off failure of gaskets.
Standardized installation procedures are matched to guarantee long-term sealing performance: thoroughly clean the flange sealing surface before construction to remove contaminants and residual old gaskets for a smooth and intact surface; align the gasket accurately during installation to avoid offset and wrinkles, and fasten bolts in a cross symmetrical sequence to ensure even pressure distribution on the whole flange; conduct comprehensive air tightness tests after installation to eliminate hidden micro-leakage risks and maximize sealing reliability.
Benefiting from superior material properties and sophisticated craftsmanship, Mascot’s PTFE flat gasket sealing scheme resolves key pain points including frequent leakage, short service life and poor corrosion resistance of flange seals for immersion cabinets, drastically cutting equipment maintenance frequency and renovation costs. With reliable static sealing performance, excellent medium compatibility and extended service life, Mascot’s custom PTFE sealing gaskets deliver robust core sealing assurance for the safe, efficient and long-term stable operation of immersion liquid cooling equipment in data centers.
