项目

Project

指标Indicators

普通板

Ordinary

耐油板

Oil resistant

密度/g/cm³

Density 

1.8±0.2

抗拉强度（横向）/MPa

Tensile strength (horizontal)

≥7.0

压缩率/%

compression ratio

7~17

回弹率/%

Resilient rate

≥40

蠕变松弛率%

Creep relaxation rate

≤40

常温柔软性

Always tender and soft

无裂纹

No crack

氮气泄漏率

Nitrogen gas leakage rate /ml/min

≤1

浸渍IRM903油或3号油后性能After dipping IRM903 oil or 3 oil performance

（149℃±2℃, 5h）

横向拉伸强度变化率/%

The transverse tensile strength rate

-

≤30

增厚率/%

Thickening rate

-

0~15

增重率/%

Thickening rate

-

≤20

浸渍ASTM燃料油B后性能After dipping ASTM fuel oil B performance（21℃~30℃,5h）

增厚率/%

Thickening rate

-

0~15

增重率/%

Thickening rate

-

≤20

厚度大于3.0mm的垫片材料不做横向拉伸强度试验。

Thickness is greater than 3.0 mm gasket materials do not do transverse tensile strength test.

丝网增强的垫片材料，不做横向拉伸强度和氮气泄漏率试验。

Screen enhance gasket material, do not do transverse tensile strength and the rate of nitrogen gas leakage test.