The outer part of the ring-shaped fold-over part (12) is welded in a ring shape, forming a ring-shaped core part (13).

The annular magnet may be a ring magnet, a disc magnet or a ring-shaped electromagnet.

In the entertainment and exercise instrument, a ring-shaped rotating plate is disposed between a ring-shaped upper plate and a ring-shaped lower plate.

The holder (20) includes a small ring-shaped section, a large ring-shaped section, and a plurality of columns.

The ring-shaped pooling section (90) has a cylindrical member (91) and a pair of ring-shaped members (92, 93).

The insert can be ringed-shaped or cylindrical.

Provided are: a low cost ring-shaped spring having high strength; and a method for manufacturing the ring-shaped spring.

The divided-ring-shaped resonator has a ring part and at least a pair of open ends where the ring part is disconnected.

A ring-shaped clean crystalline region (5) is formed between the peripheral low cold template (2) and the ring-shaped high heat insulating layer (3).

The metal outer ring (1) is ring-shaped.

The weight body (1) is a ring-shaped configuration, and the handle (2) is located at the radial position of the ring-shaped configuration.

The bezel includes a circular ring-shaped rotatable part (3).

The vibration isolator system includes a ring shaped elastomeric member, and ring shaped outer and inner members.

Both the outer and inner members are fixed to the elastomeric member.

The method may also include providing an adhesive in a ring-shaped pattern on a ring-shaped substrate or on the first polymer layer.