A boot (10) for a universal joint (38), the boot (10) including a first sleeve portion (12) defining a first circular opening (14) and a second sleeve portion (16) spaced from the first sleeve portion (12) along a boot axis (18), the second sleeve portion (16) defining a second circular opening (20) having a smaller diameter than the first circular opening (14), the boot (10) also including a plurality of convolutions defined along the boot axis (18) between the first sleeve portion (12) and the second sleeve portion (16) by a plurality of roots (22, 24, 26, 28) extending radially inward toward the boot axis (18) and by a plurality of crests (30, 32, 34, 36) extending radially outward away from the boot axis (18), the plurality of roots (22, 24, 26, 28) including a first root (22) and a second root (24) immediately adjacent to one another, the first root (22) being closer than the second root (24) to the first sleeve portion (12), the first root (22) extending radially further than the second root (24) toward the boot axis (18).
展开▼
