Blue Silicone O-Ring Replacement Pack for 678-114 (50 rings) Blue Silicone O-Ring Replacement Pack for 678-114 (50 rings) 678-114R150 Medical grade silicone rings cushion and hold cut wire when used with 678-114 distal end cutter. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.