Pressure and vacuum sealed feedthrough
Two ball bearings provide smooth, friction-free operation
No spring to wear out or worry about
O-ring may be serviced in about 10 seconds without the use of any tools
Designed for manual or mechanical operation of intermitten speeds up to 500 RPM
Designed to fit standard 1" diameter through-hole mounting for wall thickness up to 1 1/4"
Available in aluminum or stainless steel