- Lasdrop 3-3/4" DrySeal Shaft Seal
Lasdrop 3-3/4" DrySeal Shaft Seal
The Lasdrop DrySeal is a compact, economical lip seal designed for quick and easy installation. The lip seal, made specifically for marine use, is in constant low friction contact with the propeller shaft, preventing water from passing in your vessel. As in all Lasdrop models, the DrySeal incorporates a water lubricated alignment bearing in the housing to keep the unit properly aligned with the shaft. There is an optional back-up seal available that can be installed during the original installation changeable in the future without the need of removing the shaft or unit.
Each kit includes AWAB hose clamps that are constructed of 316 stainless steel with rolled band edges to eliminate risk of damage to the hose. The non-perforated band provides twice the tensile strength of a regular clamp.
- Split-face plate makes it easy to replace inner lip seal with an optional back-up seal without the need for special installation tools.
- Seal housing is constructed of a durable copolymer with built in water lubricated bearing insuring proper alignment to the shaft.
- Optional Back-up seal rotates freely on the shaft until replacement is needed.
- All units have dual water injection ports including necessary hardware.
How to Install Lasdrop DrySeal Shaft Seal
For full instructions for installing your Lasdrop DrySeal Shaft Seal CLICK HERE
Note: Be sure not to damage the inner lip seal while unpacking and handling.
- Unbolt the shaft coupling from the engine coupling then remove the shaft coupling from the shaft. Removing the shaft coupling may be difficult.
- Insert a spacer (smaller than the shaft diameter) between the shaft and transmission. Re-tighten the coupling back onto the transmission.
- Remove your old stuffing box. If your boat is equipped with a bolt on or rigid type stuffing box, follow the instructions below:
- If your boat is equipped with a bolt on or rigid type stuffing box you will need to reverse the plate and tube that are used to compress the packing. Once reversed, the connection hose can be fitted over the tube.
- When re-attaching your reversed plate and tube, seal the two surfaces so that no water can leak through.
- If your old stuffing box was threaded on, you will need to cover the threads with a liquid gasket material to prevent the threads from cutting into the connection hose.
- Once stuffing box is removed, clean shaft as thoroughly as possible with very fine sandpaper (400 to 600 grit) and remove any sharp edges or burrs.
- Slide the Friction Assembly over the shaft using liquid soap as a lubricant.
- Re-assemble shaft and coupling then bolt to transmission.
- Strap connection hose to stern tube with the provided stainless hose clamps. An insert may be necessary for proper fit.
- When mounting your friction assembly, arrange connection hose so that there is a minimum amount of pressure on the inner alignment bearing (inside the friction assembly). This should only have to be done if shaft is not centralized with the stern tube in a fairly extreme manner.
- Mount connection hose crooked to relieve any major pressure caused by misalignment. When tightening hose to friction assembly with clamps, DO NOT over tighten.
Information sourced from Lasdrop Shaft Seals Installation Instructions.