DISS GASKETS
Engineered for Ultra High Purity Sealing – 25 Years Without a Single Failure
In ultra-high-purity gas systems, every seal matters. When failure isn't an option, Critical Systems, Inc.'s DISS gaskets are the trusted solution for leak-free, contamination-resistant connections between specialty gas cylinders and UHP pigtails.
With over two decades of proven reliability and zero recorded failures in the field, CSI’s DISS Gaskets set the standard for performance and durability in high-purity and ultra-high-purity gas delivery systems. Precision-engineered and manufactured under rigorous quality standards, our gaskets ensure unmatched sealing integrity where it matters most.
Proven Performance in Critical Environments
For 25 years, CSI’s DISS gaskets have supported the world’s most demanding applications—from semiconductor fabrication lines to high-purity research labs—without a single reported failure. That level of field-proven reliability is no accident; it’s the result of unmatched material science, precision manufacturing, and relentless quality assurance.
Whether you’re specifying components for a new gas delivery system, upgrading legacy infrastructure, or replacing worn sealing elements, choose a gasket that exceeds expectations and holds up under pressure—every time.
Trust the DSS-1000-N. Trust CSI.
Features:
Material Composition:
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Soft-Annealed Nickel 200 (standard)
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Optional: Stainless Steel or PCTFE (by special order)
Compatibility:
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Fits all 630/710 Series CGA Connections
Design Features:
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Recessed sealing surfaces for alignment and leak prevention
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Retaining clip for easy, tool-free installation
Compliance & Certification:
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Conforms to CGA-TB9-1993 standard
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Full heat and lot traceability
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Maximum surface roughness of 5Ra
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Hardness rating: Max 105 Vickers / 75R15T
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Hot DI Cleaned and HEPA dried for particle-free delivery
Experience Unmatched Reliability with CSI’s DISS Gaskets
With innovations in annealing, surface treatment, and rigorous inspection, CSI’s DISS Gaskets are the dependable choice for specialty gas sealing, ensuring reliability and safety in every application.
Proprietary Innovations That Deliver
Dead Soft Annealing Process
Our gaskets are manufactured from Nickel 200 or optional Stainless Steel and undergo a tightly controlled annealing process. This results in a "dead soft" metal structure, ideal for forming secure, gas-tight seals with ultra-low permeability. The process stabilizes the gasket material, eliminating the potential for microfractures and ensuring consistent, long-term performance.
Electropolished Surface Treatment
Each gasket is electropolished to remove surface impurities, enhance corrosion resistance, and optimize chromium-to-iron ratios. This process results in an ultra-smooth surface that resists oxidation, reduces particulate formation, and strengthens long-term seal integrity in high purity gas systems.
ISO 9001-Certified Inspection Standards
Every DISS gasket is inspected under magnification and subjected to stringent quality control. Our inspection process includes dimensional verification, surface roughness testing, and full traceability, guaranteeing zero-defect performance in every batch.
Why CSI’s DISS Gaskets Are the Industry Standard
CSI’s DISS Gasket DSS-1000-N is the premier choice for UHP CGA (DISS) connections, providing a secure, long-lasting metal-to-metal seal under the most demanding conditions. Backed by proprietary enhancements and ISO-certified inspection protocols, it’s trusted across semiconductor fabs, microelectronics labs, and specialty gas supply systems worldwide.