Martin Sprocket & Gear Martin 1090M20-SEALUPC: 697950916316 | UNSPSC: 31163002 | GTIN:Couplings > Grid Couplings > Grid Coupling Seal KitsMartin Blue-Flex™ Installation Seal Kit, For Use With: Blue-Flex™ 1090M Grid Coupling, Nitrile RubberSpecs:Material: Nitrile RubberSuitable For Use With: Blue-Flex™ 1090M Grid CouplingPackaging:Length: 8.25 inWidth: 8.25 inHeight: 5.125 inWeight: 0.55 lbCertifications/Standards:ANSI Specified | B29.1 - 1975Warranty:1 year