Seals and rings Flashcards
1
Q
describe packing
A
A hydraulic seal to minimise internal leakage and loss of system pressure
The most common seal is the O-ring
2
Q
describe sealing washers
A
Washers that prevent leakage
3
Q
describe wipers
A
A felt wiper installed on the counterbore around the shaft that wipes of any dust or debris that may have been attracted by the lubrication with affecting the movement of the shaft
4
Q
describe backup rings
A
Back up rings are used to prevent O-rings from extruding under high pressure
5
Q
O ring installation (3)
A
Pre installation inspection
Extreme care must be used to prevent the ring being nicked or damaged
soak the O ring in the lubricant it will be exposed to
6
Q
Define Packing
A
Devices that form part of a seal by nature of their plastic and elastic properties
