AS-R3N, to replace burgmann m3n seal. Conical spring design. Standard size: 10-80mm. The common materials: Seal ring: car, sic, ssic, tc. Secondary seal:nbr, epdm, viton etc. Spring and metal parts:304, 316., hast.C Asinoseal also offer mechanical sealsstocks for burgmann BT-FN, M37/M37G, , HJ92N, M7N, H7N, M74-D, H74-D, EAGLE 1527, EA560(A), MG1/12/13/S20. Carton with plastic foam