答 PANTONE 7457 C色号的RGB色值为 (187,221,230)， Hex (十六进制色值)为 #BBDDE6， CMYK 为（18,0,5,0） ，请注意，这些数值是由计算机模拟的颜色，实际生产中请参阅最新出 …

These sealing rings have been used typically in applications in contact with air or a variety of fuels, lubricants and hydraulic fluids from -15 to +290 degrees C (+5 to 554 degrees F), but usage is not limited.

varied media environments. The AMS 7257 specification establishes a baseline for elastomeric materials considered capable of withstanding . ong term exposure to 550°. When the operating environment demands extreme sealing performance, customers often specify a material that e.

1.1 Form: This specification covers a perfluorocarbon (FFKM) rubber in the form of molded O-rings. 1.2 Application: These sealing rings have been used typically for applications in contact with air or a variety of fuels lubricants, and hydraulic fluids from -15 to +290 °C (+5 to 554 °F), but usage is not limited to such applications.

Original Properties AMS 7257C Simriz 498 Hardness, Shore A, ASTM D2240 70 to 80 78 Tensile Strength, psi, ASTM D1414 1500 min. 2650 Ultimate Elongation, %, ASTM D1414 120 min. 161 AMS-3021 Fluid Immersion, ASTM D471 and ASTM D1414, 70 hrs. at 175°C Hardness change, Shore A, ASTM D2240 ± 5 0

This specification covers a perfluorocarbon (FFKM) rubber in the form of molded o-rings. These sealing rings have been used typically in applications in contact with air or a variety of fuels, lubricants and hydraulic fluids from -15 to +290 degrees C (+5 to 554 degrees F), but usage is not limited to such applications.

2024年7月1日 · Fatout Armored RCC (rubber coated copper) header gaskets features a rubber coating that is inert to almost all fluids and solvents and can withstand the extreme temperatures produced by the hottest drag motors. The dry coating is very thin to ensure low torque loss and is durable enough to be reused in most cases.

SAE AMS 7257C-1993,This specification covers a perfluorocarbon (FFKM) rubber in the form of molded o-rings. These sealing rings have been used typically in applications in contact with air or a variety of fuels, lubricants and hydraulic fluids from -15 to +290 degrees C (+5 to 554 degrees F), but usage is not limited to such applications.

1998年8月1日 · This specification covers a perfluorocarbon (FFKM) rubber in the form of molded O-rings. A description is not available for this item. This specification covers a neopentyl polyol …

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