General molded rubber-MingYi

Common grade fumed rubber for molding has good physical properties, yellowing resistance and good processability. They are applicable to general molded products with requirement for high transparency. Such as: sanitary products and industrial miscellaneous parts such as O-rings and sealing gaskets.

Typical Properties:

Category		Item
General molded		MY D9530	MY D9540	MY D9550	MY D9560	MY D9570	MY D9580	MY D9590
Appearance		Transparent
Vulcanization	Hardness Shore A	30±2	40±2	50±2	60±2	70±2	80±2	86±2
	Tensile strength MPa≥	8.0	8.5	8.5	8.5	8.5	8.0	8.0
	Elongation at break %≥	600	500	400	400	300	200	120
	Breaking set %≤	8	8	8	8	8	8	6
	Tear strength B KN/m≥	15	20	25	25	25	20	10
Post-curing	Hardness Shore A	35±2	45±2	56±2	66±2	74±2	84±2	90±2
	Tensile strength MPa≥	6.5	7.0	8.0	8.0	8.0	7.0	5.0
	Elongation at break %≥	500	400	300	300	200	150	80
	Tear strength B KN/m≥	10	16	18	18	18	16	8
Specific density 25°C g/cm³		1.07±0.04	1.13±0.04	1.15±0.04	1.18±0.04	1.22±0.04	1.25±0.04	1.23±0.05
*Compression set 18022h %**≤		55	50	50	45	45	40	35
Resilience %≥		55	55	50	45	40	40	35
Dielectric strength kV/mm ≥		20	20	20	20	20	20	20
Volume resistivity Ω.cm≥		1.0 x 10¹⁵	1.0 x 10¹⁵	1.0 x 10¹⁵	1.0 x 10¹⁵	1.0 x 10¹⁵	1.0 x 10¹⁵	1.0 x 10¹⁵

Physical data in the above table is for reference only.

Vulcanization condition: 175℃× 5Min. Post-curing condition: 200℃ x 4h

Addition of curing agent: liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane: 0.65%.

Advantage:

- Flexible processability

- Flexible comprehensive physical properties

- Good yellowing resistance

Applications:

- Applicable to molded products with requirement for high transparency, such as sanitary products, O-rings.

Packing & Storage:

- 20kg/ carton lined with plastic bags or sheets.

- The products have a shelf life of 9 months from date of manufacture depending on the shore hardness if stored at room temperature in the originally sealed container.