The inji hatimi ne Rotary inji shaft hatimi na'urar, yana nufin a kalla biyu na perpendicular zuwa axis na juyawa na karshen surface a cikin ruwa matsa lamba da diyya ga rawar nama roba (ko Magnetic) da kuma karin hatimi hadin gwiwa, don haka don kiyaye manna da dangi suna zamewa da zama kayan aiki don gujewa zubar ruwa.Babban aikin hatimin inji shine hana zubar da iskar gas da ruwa a cikin aikace-aikacen ramuka masu juyawa.An yadu amfani da inji hatimi bayani dalla-dalla ga famfo, agitator, kwampreso da sauran makamantansu kayan aiki,Daidaitaccen hatimin injiyawanci raba zuwa bangaren inji hatimi daharsashi inji hatimia hanyar hadawa.Kuma bangaren inji shaft hatimi kuma za a iya raba kashiguda spring inji like,kalaman spring inji like, Elastomer bellow inji hatimi ,karfe bellow inji likeDa dai sauransu. Za mu iya samar da yawa daidai misali iri na inji hatimi na da yawa shahara iri kamar yadda Eagle burgmann, AES, John crane da Vulcan.
