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钢环及静止密封垫材质选用

产品详情

PTFE油封材质选用 Material Selection for PTFE Oil Seals
编号 No.	密封件材质 Material	应用特性 Application Feature
1	纯铁氟龙 Virgin PTFE	适用于食品，制药等制程 Suitable for foodstuff and pharmaceutical process.
2	玻纤填料铁氟龙PTFE filled glass fiber	改良的耐压，耐磨性，抗化学性好；较优的热导性 Improved pressure-resistant, wear resistance, excellent chemical resistance and optimum thermal conductivity.
3	青铜填料铁氟龙PTFE filled bronze	耐高压，耐磨耗，热传导性佳，特别适用于190℃以上的高温场合 High pressure resistance, good thermal conductivity, abrasion resistance, especially for applications in high temperature above 190 ℃.
4	石墨填料铁氟龙PTFE filled graphite	适用于短期无润滑或长期润滑不良的旋转应用 Suitable for Short-term without lubrication or long-term bad lubrication rotary applications.
5	碳纤填料铁氟龙PTFE filled carbon fibre	耐磨好，耐压性好，良好热导性，低透气性 Excellent wear resistance and pressure resistance, good thermal conductivity,low-permeability

钢环及静止密封垫材质选用Steel ring and static gasket material selection
编号 No.	钢环材质Material	应用特性
1	碳钢Carton steel	标准材质，一般环境下润滑油或润滑脂之应用 Standard material, suitable for general environment of lubricating oil or grease.
2	304不锈钢304 stainless steel	腐蚀环境下润滑油或润滑脂之应用 Suitable for lubricating oil or grease under corrosive environment.
3	316不锈钢316 stainless steel	腐蚀性流体之密封 Corrosive fluid seal
编号 No.	密封垫材质Material	应用特性Application Feature
1	NBR	标准材质，一般环境下润滑油或润滑脂之应用，适用温度-40～100℃ Standard material, suitable for general environment of lubricating oil or grease, applicable temperature - 40 ~ 100 ℃
2	FKM(Viton)	高温下润滑油或润滑脂之应用，适用温度-20℃～200℃ Suitable for lubricating oil or grease under high temperature, applicable tempreature - 20 ℃ ~ 200 ℃

转轴与沟槽的要求Requirements of shaft and groove
为充分发挥PTFE油封的优异性能与耐用性，并避免安装不当导致密封件受损，轴的密封面与密封件沟槽必须有适当的加工。安装时，聚四氟乙烯密封唇必须向压力侧。

轴Shaft
■轴表面硬度≧40HRC（润滑不良或高速运转的场合≧58HRC)
Shaft surface hardness≧40HRC
（poor lubrication or high speed occasion≧ 58HRC)
■表面研磨并抛光以去除锐角，表面粗度Ra=0.2～0.5 um,
真空应用Ra≦0.2um
Grinding and polishing the surface to remove the sharp angle, the surface roughness Ra=0.2～0.5 um,vacuum applications Ra≦0.2um
■轴径尺寸公差h11 Shaft dimensional tolerances h11
■端面导角15° - 30° Face conduction angle 15° to 30°
沟槽Groove
■表面粗度Ra≦0.8um Surface roughness Ra≦0.8um
■沟槽尺寸公差H8 Groove dimensional tolerances H8
■端面导角5° - 15° Face conduction angle 5° to 15°