This Sherwood 19867 retaining snap ring for suitable for use with Sherwood 26000 series pumps and the following Sherwood pumps: G1801, G1804, G1805, G1806, G18061-01, G1807, G18071-01, G18071X, G1808, G18081-01, G18082-01, G18082X, G1810-01, G1810X, G1811-01, G1814-01, G1814X, G1815-01, G1815X, G1816-01, G1816X, G2601-01, G2601-02, G2601-03, G2601X, G2602-01, G2603-01, G2603-02, G2603-03, G2603X, G2604-01, G2605-01, G2902-01, G2902X, G2903-01, G2903-02, G2903X, G2904-01 and G2904X.