超碰精品在线观看I91免费黄色Icaoprom人人I亚洲成人高清I成人毛片18女人毛片Iav免费在线播放I另类国产I韩日av在线播放I国产网站一区I国产激情文学I国产日本在线播放I国产福利资源在线I美女又黄又免费的视频I复仇女尸在线观看Ixxx老太太I中国免费看毛片I少妇久久精品I九色91avI99热这里只有精品在线I日韩欧美综合视频I国产欧美aI国产五码avI91亚洲视频在线I五月天婷婷基地I亚洲视频观看

This lubricant contains MoS2, and other lubricating pigments in a polymide high temperature resin and was developed by Midwest Research Institute, Kansas City, Missouri in connection with a contract with the NASA Marshall Space Flight Center, Huntsville, Alabama. NPI has been licensed by MRI to formulate, apply and market this lubricant since 1968. This lubricant was developed for use at temperatures up to +500°F and in hard vacuum environments. NPI-425 has excellent wear life, having 3 to 5 times longer wear life than MIL-L-8937 lubricants at room temperature and 5 to 10 times longer at 450 F. It passes ASTM E595 outgassing requirements and is radiation resistant. The nominal thickness of this lubricant is 0.0002 to 0.0004 inches and is cured for 1 hour at +300°F followed by 1 hour at +575°F and, therefore, would not be considered suitable for use on some metallic substrates such as aluminum. Tests have shown, however, that acceptable performance can be obtained by increasing the +300°F cure time to 5 hours and eliminating the +575°F cure procedure. Tests also show that this lubricant has a very constant and low coefficient of friction compared to other lubricants.