Type 1678 Description : - Stepped shaft balanced s :- seal, otherwise similar to our Type 1677. Both designs are energised by a special continuous wave spring with no weld spots, and are available in the same materials. Commonly fitted with a reduced shaft size Type 8 DIN Long seat.

Type 167X Superior Design  :- These seals utilise a double wave-spring . If the seal manufacturer’s design solution is to use two wave-springs welded together, then this creates a weak spot, prone to both mechanical failure and corrosive attack. Prestige Type 167X seals incorporate a one-piece designed, crest to crest wave spring, removing the possibility of corrosion to weld spots. This removes the most common seal failure mode on such seals. The seals contain an energised rotary ‘O’-Ring, reducing shaft fretting and ensuring positive shaft sealing. Our design has a chamfer at the front wall of the ‘O’-Ring groove and a dynamic ring backing plate constantly energising and pressing the ‘O’-Ring forward and down onto the shaft. This overcomes ‘O’-Ring hang-up on the shaft, the second common ultimate seal failure mode found on other manufacturer’s designs.

See the complete Wave Spring Mechanical Seal Range.