000 00386nam a2200121 4500
027 _aBS 1806 : 1962
_q1962
041 _aeng
942 _cSD
110 _aBritish Standard Institution, London
245 _aBS 1806 : 1962 : Specisfication for dimentsions of toroidal sealing rings
_b('O' seals and their housings)
260 _aLondon
_bBritish Standard Institution
500 _aSTD501
999 _c172523
_d172523