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100% Graphite O-Rngs, 6.3mm ID, for Split Liners, 450°CPart Number: 392611761Temperature Limit: 450°C Qty/Pk: • Precision formed, high purity graphite • Reduced ferrule bleed • Stable to 450°C • Not for use with GC/MS transfer lines • Doesn’t stick to glass • Reusable if not over tightened • Does not cold flow • Packaged in Ultra Clean glass bottles |