Solving HV & UHV System Problems | Vacuum Contamination & Virtual Leaks
Virtual Leaks
A blind tapped hole inside a vacuum system leaves residual air space at the bottom that cannot be fully evacuated in the vacuum cycle when a bolt, screw, or other fastener is threaded into the hole. Moreover, a screw is a helix with a large surface area also containing voids of trapped air. This produces virtual leaks. Our vented (hollow) and slotted fasteners provide direct ventilation for these voids, allowing the trapped volumes of air within the threads and at the bottoms of the holes to be fully evacuated. This speeds pump-down and helps improve system performance.
Galling
In High Vacuum and Ultra High Vacuum systems, like materials can become cold-fused together—called galling—due to thermal expansion and the lack of moisture created by the vacuum. Screws threaded into blind tapped holes are commonly affected by galling, and components made of stainless steel are especially susceptible. Our finishes, coatings, and platings are uniquely formulated to prevent galling, making parts maintenance and replacement faster and easier. Without the hassle of galled, stuck fasteners, downtime is minimized.
Vacuum Contamination
Because all RediVac® components are inspected, cleaned, and packaged in a Class 100/ISO Class 5 Cleanroom environment, particulate and organic surface contamination is significantly reduced or eliminated altogether. RediVac® fasteners, washers, nuts, and O-rings are ready to use upon delivery, saving you time in handling and cleaning the parts before installing them in your HV or UHV equipment. And, because they significantly reduce vacuum contamination, your system will perform better.
Outgassing
A significant source of contamination in HV and UHV systems is outgassing from water and volatile organic compounds within O-ring seals. We offer both cleaned and vacuum baked O-rings to remove residual contaminants from their surfaces and buried within the compound itself. This results in greatly reduced outgassing of H2O and other contamination in High Vacuum and Ultra High Vacuum systems.
Why choose vented fasteners and O-rings from Pure Tech Components Ltd?
Pure Tech Components Ltd are the premier UK distributor for UC Components, Inc.
UC Components fasteners have been instrumental in vacuum and other clean-critical applications since 1974. We offer a wide variety of fasteners and O-rings, including, but not limited to, standard and vented screws, washers, and hex nuts in multiple materials. We offer numerous finish options, specialised venting designs, complete custom product development, and Class 100/ISO Class 5 Cleanroom cleaning & packaging. Please feel free to visit our website to view our products on offer, request a quote, or contact us for more assistance or additional information. If you do not see the fastener, material, or O-ring that you need listed in our standard products, please contact us, as we are normally able to acquire or manufacture just about any fastener or O-ring you need.