SS-4-VCR-7-4 | Swagelok | 316 S/Steel, Vcr Face Seal Fitting. Swagelok SS-4-VCR-7-4. Is Swagelok SS-4-VCR-7-4 not the part you are wanting?. Vcr Face Seal Fitting. Vcr X 1/4 In. 316 S/Steel. Female Npt Connector Body.