Слово встречается в следующем контексте:
на линии промывки второпластовых колец скольжения и торцов вала погружных насосов G-005A/B на предмет наличия поломок, работоспособности, целостности изоляции и срока госповерки.

Заранее спасибо

Teflon® PTFE V-Rings
Stack these V-rings in hydraulic and pneumatic cylinders, motors, pumps, and valves to reduce equipment wear, fluid loss, and frequency of packing changes. Ideal for use in chemical processing. Made of molded virgin Teflon® PTFE, they're suitable for reciprocating, oscillating, and rotary motion use. Their angular shape keeps seals intact when pressure is applied. Chemically inert except for molten alkali metals and fluorines. Durometer hardness is D50-D65. Temperature range is -450° to +500° F. Not rated for pressure. Color is white.