Seal life of EPDM O-rings at high temperature determined by unique method

Final Report for Aging Studies of Epdm O-Ring Material for the H1616 Shipping Package (U)

“…These openings were intended to prevent artificial "sticking" of the O-rings, which could provide a false positive result, and provide a more realistic representation of actual in-service practice. This behavior has been observed in other studies, particularly at higher aging temperatures [6].…”

Preliminary Report: Effects of Irradiation and Thermal Exposure on Elastomeric Seals for Cask Transportation and Storage

“…Another limitation is that the time to failure at meaningful or realistic test conditions can often require significantly long test periods. Some investigators have used time to leak failure as the only measure of seal performance [8][9]. While this approach has merit, the data are generally limited to leak failures at high temperatures with extensive extrapolations needed to estimate time to leakage at lower, more realistic temperatures.…”

Influence of ultraviolet aging on the structure, mechanical and gas permeability properties of hydrogenated nitrile butadiene rubber

“…Elastomers have widespread use in many industrial areas, such as tires, bridge bearings, engine mounts, seals or coatings 1,2 . Because of the outstanding resilience and elasticity, elastomer seals are widely used as sealing components in the form of O‐rings, hoses, gaskets and so on 3,4 . Hydrogenated nitrile butadiene rubber (HNBR) is obtained through saturating the carbon–carbon double bonds in the backbone of nitrile butadiene rubber (NBR) with hydrogen 5 .…”

“…1,2 Because of the outstanding resilience and elasticity, elastomer seals are widely used as sealing components in the form of O-rings, hoses, gaskets and so on. 3,4 Hydrogenated nitrile butadiene rubber (HNBR) is obtained through saturating the carbon-carbon double bonds in the backbone of nitrile butadiene rubber (NBR) with hydrogen. 5 Due to the superior oil and heat resistance as well as excellent mechanical properties, HNBR is commonly used in the sealing industry, particularly as seals in gas and oil production.…”