Aspects and techniques of the present disclosure relate to an enclosure (20) that can include first and second housing pieces (22, 24) that cooperate to define an enclosed interior (26) of the enclosure (20). The first and second housing pieces (22, 24) mate at an interface (28) that extends about a continuous sealing loop (30). The enclosure (20) may include a seal (44) that extends about the continuous sealing loop (30) of the enclosure (20) at the interface (28) between the first and second housing pieces (22, 24). The seal (44) can include a retention portion (46) positioned within a channel (36) of the first housing piece (22) and a sealing flap (48) connected to the retention portion (46). The second housing piece (24) may include an outer flange (50) that extends about the continuous sealing loop (30) of the enclosure (20). The sealing flap (48) of the seal (44) can be compressed between the outer flange (50) and a rim element (32) of the enclosure (20).