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Rubber compounds

Silicone rubbers have properties of both inorganic and organic materials. They are composed of unique silicone gums and high-purity silica. Silicone rubbers offer many outstanding features not found in other organic rubbers.

Feature

Heat and cold resistance

At 150°C there is almost no change in physical properties, and they maintain elasticity at temperatures at which typical organic rubbers become brittle.

Weather resistance

Silicone rubbers can be exposed to UV rays, wind, and rain for long periods with almost no change in physical properties.

Oil resistance, solvent resistance, chemical resistance

Silicone rubbers have superior oil resistance at high temperatures. They also have outstanding resistance to solvents and other chemicals, and are nearly impervious to polar organic compounds and dilute acids and alkalis.

Electrically insulative

They are stable over a wide range of temperatures and frequencies. And even when immersed in water, there is almost no decline in performance.

Compression set

They are stable over a wide temperature range (-60°C to +250°C).

Transparency and coloring

Silicone rubbers are highly transparent, meaning they can be easily colored with pigments.

Typical Products

Application/Type Grade Appearance Features
General molding KE-931-U Milky white translucent FDA (21CFR177.2600), BfR
KE-941-U Milky white translucent
KE-951-U Milky white translucent
KE-961-U Grayish white
KE-971-U Grayish white
KE-981-U Grayish white
KE-961T-U Milky white translucent
KE-971T-U Milky white translucent
KE-871C-U Grayish white JIS 4 C
For key pad KE-9511-U Milky white translucent Middle fatigue durability
KE-5151-U Milky white translucent High fatigue durability
Vibration absorption / Vibration control KE-5550-U Pale yellow High attenuation
KE-501EM-U Milky white translucent Low dynamic magnification
Power connector KE-7211-U Pale gray Tracking priperty 3.5KV
KE-7212-U Gray Tracking priperty 4.5KV
KE-7213-U Blue white High-dielectric constant
X-30-3893-U Black Dielectric constant
General extrusion molding KE-541-U Milky white translucent Tube for beverage etc.
KE-551-U Milky white translucent
KE-561-U Milky white translucent
KE-571-U Milky white translucent
KE-581-U Milky white translucent
For antistatic KE-9590-U Milky white translucent Antistatic effect
For tubes KE-153-U Milky white translucent Transparent
KE-174-U Milky white translucent
KE-1551-U Milky white translucent
KE-1571-U Milky white translucent
For O-rings KE-555-U Pale yellow High strength
KE-575-U Pale yellow
For baby nipple, etc. KE-131-U Milky white translucent Low hardness, high elongation
KE-520-U Milky white translucent
KE-530B-2-U Milky white translucent
KE-540B-2-U Milky white translucent
For flame retardant parts KE-5620W-U White Flame retardance UL94 V-0
KE-5620BL-U Black
KE-5612E-U Grayish black
KE-5612G-U Grayish black
KE-5634-U Translucent UL94 V-1
For microwave oven window gasket, etc. KE-552-U Pale brown Heat resistance
KE-582-U Pale brown
KE-552B-U Pale yellow Heat resistance in air tight condition
For gasket for thermos, etc. KE-7511-U Pale yellow Steam resistance
KE-7611-U Pale yellow
KE-7711-U Pale yellow
For electric conductive parts KE-3601SB-U Black Electrically conductive material
KE-3711-U Black
KE-3801M-U Black
For thermal interface parts KE-6801-U Dark blue High thermal conductive material
For industrial rolls KE-765-U Pale yellow Heat resistance
KE-785-U Grayish white
Electric wires KE-1265-U Grayish white General product
KE-5615-U White Flame retardant
KE-6080-U Dark brown High heat resistance
Heat resistant parts KE-1734-U Grayish black Flame retardant, sinter
Plug boots KE-655-U Grayish white Withstand voltage
Case seals, etc. KE-503-U White Oil bleed
KE-505-U Grayish white
Airplane gaskets, etc. KE-136Y-U Pale yellow Low temperature resistance
KE-186-U Milky white translucent Very low temperature resistance

Fluorosilicone rubber

Application/Type Grade Appearance Features
Solvent resistant FE-251-U Pale yellow Flame-resistant diaphragms, check valves
FE-261-U Pale yellow
FE-271-U Grayish white
FE-351-U Pale yellow High tear-strength type
FE-361-U Pale yellow
FE-451-U Pale yellow Copolymer

SEP rubber

Application/Type Grade Appearance Features
High durability SEP-1411-U Pale yellow General molding grade sulfur vulcanization is available
SEP-1711-U Yellow
SEP-1421-U Pale yellow General molding grade Heat resistant grade
SEP-1721-U Pale yellow
SEP-1731-U Gray General grade for extrusion molding
SEP-363-U Black Flame resistant grade, halogen-free
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