Quality You Can Rely On Every graphite carbon ring is CNC-machined from fine-grain high-purity graphite and individually inspected for size and surface finish. We control tolerances tightly so the ring drops into your cigarette maker without adjustment. Benefits Direct fit – no machining on site. Less downtime – long-lasting, self-lubricating. Cost efficient – fewer replacements per year. Safe at heat – stable near 300°C. Ordering Provide inner/outer diameter and thickness,