Precision Polymer N73B

N73B is a Copolymer of acrylonitrile and butadiene with a medium ACN content of 30 - 45%.

NBR materials typically provide excellent resistance to petroleum-based oils, fuels and greases, as well as, very low gas permeability, ozone resistance, plus exceptional heat ageing and mechanical properties.

N73B is accepted by the UK Ministry of Defence (MOD) to Defence Standard 02-337 part 1, issue 1 (NES 337) for use on naval ships and submarines. Material code MN70.

Available in any sized O-ring (fully moulded up to 2.5m/8ft internal diameter) and custom designed components.

Key Attributes

• Excellent resistance to aliphatic hydrocarbon oils, fuels and greases.

• Very low gas permeability

• Accepted by M.O.D. to Def. Stan. NES 337

Typical Applications

• Naval ships and submarines

• Aerospace applications

• Pumps

• Valves

基本信息
特性	共聚物 耐臭氧性能 耐燃油性 耐油性能 耐油脂性能
用途	泵件 船舶应用 阀门/阀门部件 航空航天应用
外观	黑色

硬度	额定值		测试方法
IRHD 硬度			ASTM D1415, ISO 48

弹性体	额定值	单位制	测试方法
抗张强度 (屈服)		MPa	ASTM D412, ISO 37
伸长率 (断裂)		%	ASTM D412, ISO 37
压缩永久变形 (70°C, 24 hr)		%	ASTM D395, ISO 815

老化	额定值	单位制	测试方法
空气中拉伸强度的变化率 (100°C, 168 hr)		%	ASTM D412, ISO 37
空气中极限伸长率的变化率 (100°C, 168 hr)		%	ASTM D412, ISO 37
空气中 IRHD 硬度的变化率 (100°C, 168 hr)			ASTM D573, ISO 188

热性能	额定值	单位制
Maximum Operating Temperature		°C

补充信息	额定值	单位制
Low Temperature Resistance - Non-brittle after 3 minutes		°C
Minimum Operating Temperature: -35°C (-31°F)