The 3R897 is a high quality nitrile rubber cork. This type of cork is highly compressible and has good resistance to oils. It withstands temperatures ranging from -40 to 121 ° C (-40 to 250 ° F).
The 3R897 cork is particularly effective for dielectric strength and dry heat. It is also recommended for electric motors, fuel & oil pumps, grease retainers, small engine service and transformers. This material is as well used for carburettors, gasoline pumps and hydraulic systems. It therefore resists to gasoline, diesel, aromatic hydro-carbons, aliphatic ethyl alcohol, methyl alcohol, ethylene and glycol.
|Durometer Shore A (ASTM D2240), pts||50-70|
|Density (ASTM D3676) (g/L, min)||529 (33 pcf, minimum)|
|Tensile Strength (ASTM F152) Mpa||1.34 (200 psi, min.)|
|Compressibily (400 psi), (ASTM F36) %||35-45|
|Recovery (ASTM F36) %||75 min|
|Flexibility (ASTM F147)||3 max|
|Compression Set B (ASTM D395) %|
|(25% deflection, 22 hrs. 158°F)||80 max|