The Tandem Tech | 1/4″ Nickel VCR Gasket w/ Retainer is a nickel VCR metal gasket for 1/4″ VCR face-seal tube fittings used in high-purity, high-vacuum, and high-pressure process connections on cryogenic cold trap systems and botanical extraction equipment. VCR gaskets provide a metal-to-metal, all-welded-equivalent seal when properly torqued, essential for maintaining leak-free connections in LN2 and high-vacuum service. Single-use; replace gasket whenever the VCR fitting is disassembled.