The General Pump 701104 replaces a worn or leaking O-ring inside chemical injectors. This O-ring is compatible with color-coded stainless steel chemical injector models 100336RD, 100094WT, 100835OR, 100334GY, 100333BL, 100339LG, and 100541GY. It is made with Aflas that handles high temperatures and harsh chemicals. The dimensions measure .176 ID X .070CS. A genuine OEM part to ensure a proper fit and material compatibility with the recommended injector models.