Glossary
for Seals, Gaskets, O-Rings, Orings, Rubber.
| Includes
the terms and definitions for seals, seal, orings,
gasket, gaskets, hydraulic seals, hydraulic seal,
metric seals, metric seal, o-rings, o-ring, viton,
teflon, silicone, rubber, nitrile, ucup, plastic,
metric orings, injection molding, oil seals, packings,
parts, molding, machining.
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"G"
Gap Seals - A seal ring used to
seal between the gaps of metal or plastic.
Gasket - A flat, non-moving, compressible rubber-like
device squeezed between two flat sufaces forming a static
seal. Gaskets can be made from homogeneous rubber, fabric
reinforced rubber, fiberous materials with rubber binders,
flexible graphite, PTFE and many other materials. Some
gaskets are made from a combination of metal and fiberous
materials and some are all metal. An o-ring, while not
flat is also referred to as a gasket at times.
Gate - (rubber injection or transfer mold)
- The orifice used to control the flow of rubber, and
through which a shaped cavity in a mold is filled with
rubber.
Gland Bearing Rings - Also
called guide rings or wear rings used as a bearing surface
for the rod of a hydraulic ram or cylinder.
Gland Seals - Seals or packings used a the main
sealing device in a ram or cylinder.
Glandsele
- The brandname of a type of rod seal.
Glass
Temperature (Tg) - The temperature at which a rubber
becomes glass-like. a more recent name for Second Order
Transition point.
Glass transition point
- Temp- erature at which a material loses its glass-like
properties and becomes a semi-liquid.
Globe
Valve Discs - Teflon rings used to seal in a globe
valve.
Glyd Ring - Also known as wear
rings or guide rings - made from plastic, teflon or
soft metal to act as a bearing surface for a cylinder
rod.
Grain - The unidirectional orientation
of rubber or filler particles occurring during pro-
cessing (extrusion, milling, calen- dering) resulting
in anisotropy of a rubber vulcanizate.
Grease
Seals - Also called oil seals, rotary seals or shaft
seals. Made of rubber to seal grease in a housing with
a rotating shaft.
Green strength - (1)
The resistance to deformation of a rubber stock in the
uncured state. (2) Uncured adhesion between plied or
spliced surfaces.
Grommets - A rubber
ring used to fit into a hole in sheet metal aloow wires,
shafts or rod to exit the housing without touching the
metal.
Guiding Elements - Wear rings,
guide rings, guiding rings, bearing rings for hydraulic
cylinder rods.
Guide Rings - See also
wear rings, guide rings or bearing rings. Usually made
from a form of Teflon or PTFE. |
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