Rubber seals manufacturing company. Along with hundreds of rubber products, Inno Motion technologies are making rubber seals from various synthetic rubbers. There are variations in profile design other than circular. These include o-rings with x shaped profiles, commonly called x-rings or quad rings. When squeezed upon installation, they seal with 4 contact surfaces – 2 small contact surfaces on the top and bottom. This contrasts with the o-ring's comparatively larger single contact surfaces top and bottom. X-rings are currently being marketed as being more durable than o-rings.



There are also o-rings with a square profile, commonly called square-cut. When o-rings were selling at a premium because of the novelty, lack of efficient manufacturing processes and high labor content, square-cuts were introduced as an economical substitution for o-rings. The square-cut is manufactured by molding an elastomer sleeve which is then lathe cut. This style of seal was less expensive to manufacture with certain materials and molding technologies (compression, transfer, injection). The physical sealing property of square-cut is inferior to the o-rings. Today the price of o-rings has decreased to the point that the square cut design is nearly obsolete.