Lifetime Analysis of Rubber Gasket Composed of Methyl Vinyl Silicone Rubber with Low-Temperature Resistance

Table 1

Material properties of VMQ.

Material properties	Exp. value	Test standard
Basic properties
Hardness (IRHD)	70	ASTM D412
Tensile strength (MPa)	7.8
Ultimate elongation (%)	150
Heat resistance
Change in hardness (%)	0	ASTM D573
Change in tensile strength (%)	−19.9
Change in elongation (%)	−7.6
Compression set (%)	9.2	ASTM D395, method B; 22 h, 150°C, plied
Compression set (%)	33.6	ASTM D395, method B; 1000 h, 150°C, plied
Fluid resistance
Change in hardness (IRHD)	−5	ASTM D471, ASTM oil number 1; 70 h, 150°C
Change in tensile strength (%)	−10.1
Change in elongation (%)	−3.3
Change in volume (%)	3.4
Fluid resistance
Change in hardness (IRHD)	−10	ASTM D471, ASTM oil number 3; 70 h, 150°C
Change in volume (%)	17.5
Low temp. brittleness	No cracking	ASTM D2137, method A; −55°C, 3 min