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Continue to ChatBS018 Viton (FKM) O-Ring (18.77mm ID x 1.78mm C/S) https://www.airebearings.co.uk/product/bs018-viton-fkm-o-ring-18-77mm-id-x-1-78mm-c-s/
BS018 Viton (FKM) O-Ring (18.77mm ID x 1.78mm C/S) https://www.airebearings.co.uk/product/bs018-viton-fkm-o-ring-18-77mm-id-x-1-78mm-c-s/