Manifold cap end plate o-ring, 2-247, fluorocarbon, black, for front and rear end plates, for gas chromatography/mass spectrometry manifolds, used with series 5973, 5975, 5977 and 7000, systems 5973A, 5973N, 5973inert, 5975A, 5975B, 5975C, 5975C-TAD, 5975T, G7000C and 7002