PISCO VTA Series, Instruction Manual, Page: 14 / 28

Selection Guide 3
▲
Select a vacuum pad material from an application
Please select the suitable material from the table.
Legend 
◎：
Best
○：
Suitable
△：
Good
×：
NG
*1. Material code
“ NH ”
is only applicable to Skidproof Series.
*2. It does not apply to pad size: 4
×
30mm.
Note 1) The above
“
Physical Properties
”
shows the data of general synthetic rubbers.
Note 2) The highest / lowest operating temp. are for momentary usage. Carry out durability evaluation in case of continuous usage
under the highest / lowest operating temp.
Item
Pad material
Nitrile
rubber
NBR Suited
for the food
sanitation
act. (Japan)
HNBR
Silicone
rubber
Conductive
Silicone
rubber
Urethane
rubber
Fluoro
rubber Fluorosilicone
rubber
EPDM
Conductive
Butadiene
rubber (Low
resistance
type)
Conductive
NBR (low
resistance)
Chloroprene
rubber (For
Sponge
type)
Silicone
rubber
(For
Sponge
Type)
Material code
N,
NH
（
*1
）
G HN S SE U F FS EP E NE – S
Application
Cardboard
Plywood
Metal plate
Food-related
Other general
work
Cardboard
Plywood
Metal plate
Food-related
Other
general work
In use under
a low ozone
concentration
environment
Semiconductors
Taking out
molded parts
Thin work-piece
Food-related
Cardboard
Plywood
Metal
plate
Chemical
environment
High temp.
work-pieces
Taking out
molded
parts
Application
that requires
light-resistant
or ozone-
proof In use
under in the
moisture-
containing
atmosphere
General
parts of
semiconductors
Semiconductors Uneven
work-
piece
Uneven
work-
piece
Food-
related
Pad color Black Gray Black Translucent Black Blue Gray Salmon Black Black Black Black Salmon
Ph
ysical P
roper
ties
Surface
hardness
(Shore A)
Standard 50˚~80˚ 60˚~70˚ 50˚~70˚ 50˚ 60˚ 55˚~70˚ 60˚~70˚
－
50˚~70˚ 70˚ 60˚~70˚
－ －
Bellows 50˚
－
50˚ 50˚ 60˚ 55˚ 60˚
－
50˚
－
60˚
－ －
Multi-bellows 50˚ 50˚ 50˚ 50˚
－
55˚ 50˚
－
50˚
－
60˚
－ －
Oval 40˚~50˚
－
50˚ 40˚~50˚ 50˚~60˚ 55˚
（
*2
）
50˚
（
*2
） －
50˚ 70˚ 70˚
－ －
Soft 40˚
－ －
40˚ 60˚
－ －
40˚
－ －
50˚
－ －
Soft bellows 40˚
－
50˚ 40˚
－
55˚
－ －
50˚
－
60˚
－ －
Skidproof 50˚
－ －
50˚
－
55˚ 60˚
－ － －
60˚
－ －
Ultrathin 40˚
－ －
40˚
－
55˚ 50˚ 40˚
－ －
60˚
－ －
Flat 60˚
－ －
40˚ 40˚ 50˚ 50˚
－ － －
60˚
－ －
Highest operating temp. 110˚C 140˚C 180˚C 60˚C 230˚C 180˚C 150˚C 100˚C 110˚C 80˚C 180˚C
Lowest operating temp. -30˚C -30˚C -40˚C -20˚C -10˚C -50˚C -40˚C -50˚C -30˚C -45˚C -40˚C
Weatherability △ ○ ◎ ○ ○ ○ ◎ ○ △ ○ ◎
Ozone-proof
× ○ ◎ ◎ ◎ ◎ ◎ × × ○ ◎
Acid-resistance
△ △ ○ × ◎ ○ ◎ △ △ △ ○
Alkaline-resistance
○ ○ ◎ × × ◎ ◎ ○ ○ ◎ ◎
Oil
resistance (Gasoline oil)
◎ ◎ △ ◎ ◎ △ × × ◎ × △
(Benzene/toluene)
△ × △ △ ◎ △ × × △ △ △
Volume resistance
－ － －
Max.10
5
Ω·cm
－ － － －
Max.200Ω·cm Max.200Ω·cm
－ －