Hubei Elastomer Science and Technology Co., Ltd.(China Supplier)

Items	N41	N32	N21L*	Testing method
Volatiles，% ≤	0.50	0.50	0.50	Thermal roller in GB/ T 6737
Ash，% ≤	0.80	0.80	0.75	GB/T 4498 method A
Bound Acrylonitrile，%	28.0~30.0	32.5~34.5	39.5~41.5	SH/T 1157
Raw rubber mooney viscossity，ML(1+4)100℃	72~82	46~56	50~60	Over roller method in GB/T 15340 GB/T 1232.1
300% Modulus(145℃×35min)，MPa	10.9~14.3	9.0~12.0	6.0~9.4	SH/T1611 ASTM IRB No7
Tensile strength(145℃×35min) ≥	26.4	26.9	20.6
Elongation(145℃×35min)，% ≥	480	525	600
* Certified recipe: NBR 100.0, zinc oxide 5.0, sulfur 1.5, stearic acid 1.0, Cabot Stearing NS semi-reinforced furnace black 40.0, promoter DM 1.0. Vulcanization temperature (145.0±0.5)℃, one minute after pressurizing and pre-heating of the vulcanizing machine start timekeeping of vulcanization which lasts 30 minutes.

Applications：

1	N41	Applicable for oil-resistant gasket/washer, pad, O-ring, fuel oil tube, oil seal, automobile parts, oil-resistant belt, rubber liner, rubber roller, foaming products, safety shoes, adhesives, PVC modifier, etc. suitable for extruded products.
2	N32	Applicable for oil-resistant hose, gaskets/washers, pad, oil seal, automobile parts, oil-resistant belt, foaming products, etc. suitable for molded parts.
3	N21L	Suitable for High oil-resistant products.