Page 36 - BestGlove2010

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Polymers
Naturally occurring and man-made polymers are
essential building blocks of hand protection.
Specific polymers protect workers from specific
hazards. There is no ideal glove that works in every
situation. Best utilizes a variety of polymer coatings
and fabrics, designed for a variety of tasks.
Natural Rubber
Natural Rubber, the most elastic
substance known is found in over
two hundred plants including the
rubber tree (Hevea Brasiliensis), the
source of natural rubber latex used
to manufacture some Best gloves.
Natural rubber is a flexible and soft, yet tough and
durable coating that provides excellent protection
from physical hazards and provides an outstanding
grip. Natural rubber provides excellent protection
from exposure to aqueous chemicals such as acids
and caustics, and limited protection from alcohols
and ketones. Natural rubber gloves do not hold up
well in organic solvents, oils, greases or fuels such
as kerosene or gasoline.
CAUTION: Natural rubber latex has been shown to
cause allergic reactions in sensitized individuals.
Neoprene® (Polychloroprene, CR)
Strong, durable Neoprene gloves
provide excellent protection from
physical hazards such as cuts and
abrasions and also provide excellent
chemical resistance for protection from
exposure to organic and inorganic
acids. Neoprene gloves also provide
excellent protection from many organic solvents,
oils, greases and petrochemicals and resist degrada-
tion from ozone, sunlight and oxidation. In addition,
Neoprene remains functional and flexible at temper-
atures ranging from -10° to 300° F (-23° to 150° C).
Neoprene® is a registered trademark of Dupont
Nitrile (Acrylonitrile-Butadiene rubber)
Nitrile, a versatile synthetic copolymer,
is used to make a variety of gloves
ranging from heavy duty work gloves
to ultra-thin medical and clean room
gloves. Nitrile coating provides tough
protection from physical hazards such as
cut, puncture or abrasion. Nitrile dipped
gloves also provide chemical resistance
to petrochemicals (especially fuels), oils,
greases, pesticides and other agricultural chemicals
while providing excellent dexterity.
PVC (Polyvinyl Chloride)
PVC is an economical synthetic
thermoplastic polymer that is
exceptionally durable. PVC gloves
provide excellent protection from
limited chemical exposure and
physical hazard protection. They are
noted for being durable and function
well in temperatures ranging from
-30° up to 212°F (-34° up to 100° C).
Butyl (Butyl Rubber)
Butyl Rubber’s tight molecular
structure provides excellent chemical
resistance to gases and ketones. Butyl
gloves are manufactured in unsupported
version only and are used by the military
for protection from chemical warfare
agents. Butyl rubber is severely affected by
exposure to fuels and aliphatic and
aromatic hydrocarbon solvents.
Viton® (Fluoroelastomer)
Viton provides excellent chemical
resistance to fuels used in the aero-
space industry. It provides excellent
protection from exposure to aromatic
hydrocarbons such as benzene, toluene
or xylene. Viton gloves are available in
unsupported version only. For working
with extremely hazardous chemicals such as
carcinogenic or highly toxic chemicals,
Viton works where no other glove works.
Viton® is a registered trademark of Dupont.
Polymer Combinations for the
Best® of Both Worlds
Certain combinations of polymers are used to
make hybrid gloves that feature Neoprene over
natural rubber latex gloves that are used in Best
Chem Master™ gloves. Viton® over Butyl is used to
make the highly chemical resistant Best Viton® II
glove. Nitrile is used as an overdip in several Best
natural rubber gloves to provide added resistance
to aging, ozone and chemicals.
G RIP D ESIGNS
C UFF D ESIGNS
Sizing: Use a tape measure to find the circumference
of your hand around the palm area. This is close to
your actual glove size. For example, 7” is equal to a
size 7 glove. Sizes can vary among different manu-
facturers and styles. For easy size comparison,
refer to the above chart and note color coding.
Glove Size XS S M L XL
Hand Size 6-7 7-8 8-9 9-10 10-11
tractor tread
Note: Some Best gloves
have no special grip de-
sign, yet still provide good
gripping power due to the
intrinsic properties of the
particular glove polymer.
G LOVE S I ZE C HART
Disposable Gloves: This category of unsupported
gloves is generally characterized as a thin-gauge
glove that is not intended for repeated use. They
may have a donning agent such as powder or may
be powder-free.
Laminated Gloves: This special nitrile-coated fabric
is made by transfer-coating the nitrile polymer onto
a textured surface and then laminating the nitrile
film onto Sanitized® poly-cotton fabric for superior
comfort and flexibility.
Impregnated Gloves: This special nitrile or
PVC-coated fabric is made by knife-coating nitrile
or PVC directly onto Sanitized® cotton fabric.
Supported Gloves: These gloves offer a polymer
coating over a cotton, nylon or aramid liner. The
textile substrate imparts added strength and
resistance to abrasion, cuts and punctures.
Unsupported Gloves: These are polymer gloves
with no textile lining. These gloves include
heavyweight, medium weight or disposable gloves.
They may be chlorinated or have a cotton flock
lining for easier donning.
Cut Resistant Gloves: This special category
is characterized by the utility of the gloves and
includes either polymer coated gloves or special
high performance yarns that are designed to impart
cut-resistance or combinations of these.
Gauntlet:
provides additional
protection for lower
forearm, allows
maximum forearm
dexterity, lets glove
slide on and off easily,
protects wrist, releases
quickly from hand.
Note: Unsupported gloves may have a rolled
cuff, a serrated cuff or a straight cuff.
Color Coded Cuffs: Many of our styles have
color-coded cuffs for easy size identification and
pairing after laundering.
Safety Cuff: allows glove to
slide on and off easily, helps
protect wrist, releases quickly
from hand, won’t soften when
exposed to perspiration or
washing.
MIL THICKNESS
1 mil = 1/1000 of an inch
breathable vinyl rough nitrile
Unsupported gloves
Supported gloves
bisque finish smooth finish
textured grip wrinkle finish
10"
12"
14"
16"
18"
Knitwrist: designed to keep
glove firmly in place, pre-
vents debris from entering
glove, enhances warmth,
should not be used where
quick glove removal is needed.
WHAT MAKES THE BEST GLOVE?