Leak Free - Keeps your bilges dry and clean.

Trouble Free - Unlike a conventional packed gland, the maneCraft automatically compensates for wear and needs no adjustment.

Worry Free - The maneCraft has a built in emergency seal for added security and is ABS approved.

Sizes - to suit shaft diameters from 25mm (1") to 2m (6'6")

Self Adjusting- These seals automatically compensate for face wear, and unlike gland packing, do not require any adjustment.

No Shaft Wear - The maneCraft seal rotates with the propeller shaft, and therefore cannot cause wear of the shaft surface.

Maintenance Free - Once fitted, the seal does not require any maintenance, although a regular inspection should be made in common with other fitting below the waterline.

Emergency Safety Seal with Tamper Proof Tag - The red tag is designed to prohibit accidental use of the Emergency Safety Seal until required.

Check the type of stern gland you are currently using on your vessel and match it to the example suggestions as above. If you have a new build make sure there is sufficient stern tube length to fit the seat, it requires a minimum of 32mm (11/4") of free length from the bulkhead to fit the stationary seat

Check your bearing spacing using the chart below and make sure the seal is not being used on an over long shaft. The seal is not a bearing.

Measure your shaft and stern tube diameters and note the maximum rpm of the shaft after gearbox reduction. Speed and shaft diameter are important as some high speed sets have support rings.

Look at the seal selection tables below an see which sizes match the closet to your requirements. In our example you would need a set number 2 "standard". If your shaft speed exceeds the maximum for the 'Standard' set then refer to us for advice

Order the set you require and follow the fitting instructions carefully. The information here is for guidance only. A comprehensive set of instructions is included with the seal. A propeller shaft seal is a safety component and it is important that the fitting instructions are read, understood and adhered to for optimum performance of the seal. If in doubt contact us for advice.

A yacht with a 25mm (1") shaft, turning at 1200 rpm (after gearbox reduction), requires a bearing every 1.2 metres (47"). A commercial vessel with a 50mm (2") shaft at 1000rpm needs a bearing at least every 2 metres (78"). Both these figures are for premium grade stainless steel shafts, these lengths will halve with bronze shafts. It should be noted that a maneCraft seal is not a bearing, and must not be used in a situation with over long spacing. The shaft could start to "whirl" and create problems.

A vessel with two bearings, one in the 'P' bracket and one in the stern tube would mean the distance between each is calculated separately. A bearing on the outboard end of the sterntube would be measured from the bearing to the end of the next supported part of the shaft, usually the gearbox coupling.