snippet: Armstrong Flex Coupler 816665-000K - Armstrong flex coupler P/N 816665-000K 816665-000 Used with Armstrong pump models S-69, H-63, H-64,H-65, H-66, H-67, H-68, 1060. Replaces Bell & Gossett P/N PD27-12291, P77265 Woods model 4J 5/8" x 5/8" Genuine Armstrong parts Shipping rate for continental United States

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