A rod assembly (17A to 17R) configured to reciprocate along a slide hole (13, 103) of a fluid pressure device, comprising: a rod member (20, 20A to 20J, 108); and a packing (34, 34A, 34B) composed of an elastic material, attached to an outer circumferential part of the rod member (20, 20A to 20J, 108) with an inner circumferential part of the packing (34, 34A, 34B) airtightly or liquid-tightly contacting said outer circumferential part of the rod member (20, 20A to 20J, 108) and configured to slide along the slide hole (13, 103) with an outer circumferential part of the packing (34, 34A, 34B) airtightly or liquid-tightly contacting with an inner circumferential part of the slide hole (13, 103) wherein the rod member (20, 20A to 20J, 108) includes, in the outer circumferential part, a stopper receiving groove extending in a circumferential direction; a stopper member divided into a plurality of elements in the circumferential direction is installed into the stopper receiving groove; the packing has an L-shaped cross-section and includes a packing body portion which covers a side of the stopper member facing a rod cover of the fluid pressure device which the rod member (20, 20A to 20J, 108) penetrates through when the rod assembly is disposed in the fluid pressure device and a circumference covering portion which protrudes from an outer circumferential part of the packing body portion in the axial direction to cover an outer circumference of the stopper member, and the circumference covering portion has an annular engaging groove formed in an inner circumferential part thereof, the annular engaging groove being engaged with the stopper member. a rod member (20, 20A to 20J, 108); and a packing (34, 34A, 34B) composed of an elastic material, attached to an outer circumferential part of the rod member (20, 20A to 20J, 108) with an inner circumferential part of the packing (34, 34A, 34B) airtightly or liquid-tightly contacting said outer circumferential part of the rod member (20, 20A to 20J, 108) and configured to slide along the slide hole (13, 103) with an outer circumferential part of the packing (34, 34A, 34B) airtightly or liquid-tightly contacting with an inner circumferential part of the slide hole (13, 103) the rod member (20, 20A to 20J, 108) includes, in the outer circumferential part, a stopper receiving groove extending in a circumferential direction; a stopper member divided into a plurality of elements in the circumferential direction is installed into the stopper receiving groove; the packing has an L-shaped cross-section and includes a packing body portion which covers a side of the stopper member facing a rod cover of the fluid pressure device which the rod member (20, 20A to 20J, 108) penetrates through when the rod assembly is disposed in the fluid pressure device and a circumference covering portion which protrudes from an outer circumferential part of the packing body portion in the axial direction to cover an outer circumference of the stopper member, and the circumference covering portion has an annular engaging groove formed in an inner circumferential part thereof, the annular engaging groove being engaged with the stopper member.