This British Standard specifies the requirements relating to material, dimensions, finish, packaging, identi-fication and storage inspection of elastomeric grommets resistant to mineral lubricating oils and to splash attack by fuels, synthetic lubricating oils and mineral hydraulic fluids in aircraft, for operating temperatures up to 90 ℃ with peaks above this maximum.
BS 2SP 93:1974 history
1974BS 2SP 93:1974 Specification for elastomeric grommets (acrylonitrile-butadiene) for aerospace use