Bell Jar Seal for 18in Vacuum Bell Jar

The 1800‑OR is a precision bell jar seal (FKM O‑ring) engineered for Nor‑Cal’s BJ‑1800‑EP 18″ bell jar vacuum chamber. It features an 18.57″ inner diameter and 0.277″ cross‑section, fitting securely into the dovetail groove of the bell jar’s base flange. Made from high‑performance FKM (Viton®), this seal operates reliably from −20 °C to 200 °C and supports high‑vacuum performance down to ~1×10⁻⁸ mbar. Ideal for demanding lab, R&D, and industrial vacuum applications