High Vacuum Grease[3]

Updated: 2026-09-18

Overview

High vacuum grease is a specialized lubricant formulated to perform under the demanding conditions of vacuum environments. Unlike standard greases, it exhibits minimal outgassing, ensuring that vacuum integrity is maintained. This makes it indispensable in applications where even trace amounts of vapor can compromise performance. Developed to meet the needs of high-precision industries, high vacuum grease is used in scientific research, aerospace, and semiconductor manufacturing. Its ability to withstand extreme temperatures and pressures while providing reliable lubrication and sealing has made it a critical component in advanced technological applications.

Physical and Chemical Properties

High vacuum grease is characterized by its low volatility and high thermal stability, which prevent it from evaporating or degrading under vacuum conditions. Its density typically ranges between 0.95 and 1.05 g/cm³, and it remains stable at temperatures exceeding 150°C. The grease is insoluble in water but can be dissolved in organic solvents, making it easy to clean from components when necessary. Its semi-transparent to opaque appearance and viscous paste-like consistency ensure it adheres well to surfaces, providing long-lasting lubrication and protection.

Main Applications

High vacuum grease is widely used in vacuum systems, where it serves as a lubricant and sealant for joints, valves, and other moving parts. Its low outgassing properties make it ideal for use in mass spectrometers, electron microscopes, and other sensitive scientific instruments. In the aerospace industry, it is used to lubricate components in satellites and spacecraft, where reliability under extreme conditions is paramount. The semiconductor industry also relies on high vacuum grease to protect and lubricate equipment used in the production of microchips and other electronic components.

Safety and Storage

While high vacuum grease is generally safe to handle, it is important to avoid prolonged skin contact and to use it in well-ventilated areas. In case of contact, wash the affected area with soap and water. Eye contact should be treated immediately with plenty of water and medical attention sought if irritation persists. Proper storage is essential to maintain the grease's properties. It should be kept in a cool, dry place, away from direct sunlight and extreme temperatures. Containers should be tightly sealed to prevent contamination and moisture absorption.

B2B Procurement Guide

When procuring high vacuum grease, it is crucial to consider the specific requirements of your application. Factors such as temperature range, vacuum level, and compatibility with other materials should guide your selection. Reputable suppliers will provide technical data sheets detailing these parameters. Prices can vary significantly based on the grade and quantity purchased. Bulk orders often attract discounts, but ensure that storage conditions can accommodate larger quantities without compromising quality. Always verify the supplier's certifications and quality control processes to ensure consistent performance.