How do o-ring mounted seals work?

‘O’-Ring mounted mechanical seals have a small cross-section and a complete recessed ‘O’-Ring housing. A narrow seal head width allows the seals to easily fit confined DIN 24960 (EN12756) housings, whilst also providing the benefits of reduced face surface running speed, with increased circulation around the seal faces.

Seal loading is provided by conical springs or wave springs, with conical springs being the most common. Seal drive is provided by the conical spring tightly gripping the shaft at it’s base, or by grub-screws in the case of wave-spring seals. Conical Spring seals are supplied as standard with right-hand drive springs for clockwise shafts. Left-hand springs for anticlockwise shaft rotation should be specified on order.

Utilisation of wave spring technology in the seals allows the design of extremely compact seals, in both the axial and radial directions. Wave springs provide equal loading and deflection at a fraction of the free height when compared to helical springs, making them suitable for limited spaces.

Other main advantages for mechanical seal use are their insensitivity to contaminates, whilst providing straightforward fitting. These main characteristics make wave springs ideal for food, chemical and restricted fitting applications which are prone to clogging. Our resilient ‘O’-Ring mounted seal designs are technically efficient (readily accommodating misalignment and vibration) and are highly versatile.

We offer a wide range of face material combinations and spring / seat sizes to suit most applications. Our design standard of a narrow cross-section head with full recessed ‘O’-Ring groove, combined with alternative seal face materials, maximises seal performance and prolongs seal life.