The All-Seal combines the low permeation of metallic seals with the versatility of O-rings.
All-metal seals are the only way to achieve UHV and XHV. ConFlat (CF) flanges are the gold standard for UHV sealing. They are, however, heavy and bulky and knife edge seals are not well suited for large or rectangular vacuum ports. Elastomeric O-rings seals have been the only choice for large ports, but they reach their limit due to excessive permeation even when differentially pumped at high vacuum. Additionally, the composition of elastomeric O-rings is a source of contamination.
All-Seal gaskets may be used in a wide variety of geometries while still providing UHV seals.
Simple All-Metal Sealing for UHV, XHV, UHP
The Atlas All-Seal simplifies UHV, XHV, & UHP demountable sealing, enabling smaller, lighter, no/low permeation seals. All-Seal gaskets can be applied in many geometries enabling better performance.
All-Seal for Ultra High Purity
Elastomeric seals are sources of contamination. Contaminants are added to elastomers to reduce their inherent permeation, which for many applications becomes a trade-off between permeation and contamination. Atlas All-Seal gaskets are metallic and are considerably cleaner and do not compromise on permeation. They are typically aluminum but are available in other metallic materials (nickel, copper, tin, etc.). Consequently, alternative alloys of All-Seal gaskets can be selected to improve chemical resistance.
Versatile All-Metal Gaskets
The All-Seal gasket combines the low permeation of metallic seals with the versatility of O-rings.
All-Seal for Nuclear and Radiation Applications
Atlas aluminum All-Seal gaskets have a low Z and do not cross-link like elastomeric seals. Consequently, they have a low nuclear activation and retain the seal longer than elastomeric O-rings.
All-Seal for Existing Chambers
Atlas All-Seal gaskets enable low and high vacuum chambers that have previously been designed to seal with elastomeric and fluoroelastomers (such as viton, FMK, buna, PTFE, kalrez and Chemrez, teflon, etc.) to be retro-fitted for ultra high vacuum.