Super High Hardness Silicone Rubber

Super High Hardness Silicone Rubbers (High Tear Strength Silicone Rubber) have extremely high hardness and very low flexibility, designed for specific applications. This category of silicones has a Shore A hardness of 3±90 and has a transparent color, in other words, Super High Hardness Silicone Rubbers are classified as a category of silicone products reinforced with Fumed Silica, which have unique characteristics and properties due to their super high hardness. Therefore, they show higher effectiveness than routine and common silicones in certain cases.

Features of super high hardness silicones

Shore A hardness of 3±90
Very high transparency
Mechanical properties suitable for making products in contact with food
High temperature resistance
Anti-sticking
Chemical inertness

Applications of Super High Hardness Silicone Rubbers

O-rings, seals and gaskets
Food Contact Parts and Kitchen Equipment
Sealing O-rings and industrial car washers
Concrete casting molds
Drug transfer tubes, in the pharmaceutical and medical industry
Making all kinds of keyboards

SN-2290U (T)	SN-1991U(T)	Test Method	Properties / Grade No
Translucent		ASTM E 1716	Colors
450	300	ASTM D 926	Williamꞌs Plasticity
1.25	1.24	ASTM D 792	Specific gravity
90	90	ASTM D 2240	Hardness
95	8.5	ASTM D 412	Tensile strength(Mpa)
100	150	ASTM D 412	(%) Elongation
13	12	ASTM D 624 “B”	Tear strength (kgf/cm)
35	30	ASTM D 624 “C”	Tear strength (kgf/cm)
50	50	JIS K 6255	Rebound Resilience (%)
16	12	ASTM D 395	Compression Set(%)x1
3.8	3.6	JIS K 6249	Linear Shrinkage (%)