It is a 1/2″ BSP size seal made for Edwards vacuum pumps. This seal fits the E2M275 and E1M275 models perfectly. It combines a rubber ring and a metal washer in one piece. Just place it under your fitting and tighten. No mess, no leaks.
Edwards pump with this Viton part. Part number 02109076 (also listed as SV0071) is designed specifically for the E2M275 and E1M275 models. The Viton material handles high heat and harsh chemicals better than standard rubber.
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