A toroidal-type continuously variable transmission, including rolling elements having traction surfaces cooperating with each other to transmit a power between the rolling elements via a traction oil film formed between the traction surfaces. The case includes a base having a lower, a rear, and two end walls, one of the end walls having a slot therein. In another aspect, the detachable seal comprising a valve including a plurality of overlapping sheets defining an access channel that extends into communication with the incision in the patient. Once creped from the creping roll, the resulting nonwoven web is creped in the pattern of the bonding roll.