| A propeller shaft flexible seal unit designed to be
retrofitted to existing stern assemblies or installed in
new boats: the Blue Water Seal. More than five
years of testing and refining has produced a proven
system that is MOT approved for use in commercial boats
and is now used as standard equipment by well known boat
builders.
The seal element can be easily removed should it be
damaged or need replacing with no need to replace the
entire unit, as new seal elements are readily available
and inexpensive.
The Blue Water Seal has a built-in safety feature to
keep sea water out of the boat as, should the seal
element be damaged in any way, the seal retaining plate
can be converted into a gland follower by placing a ring
of greasy hemp gland packing under it to form an
effective temporary seal allowing seal replacement to be
made at the first convenient opportunity.
The units are made from cast admiralty bronze, lined
with marine grade white metal bearings and come in
sizes from 25 - 100 mm (1 - 4 inch) shaft diameters.
Spare parts are readily available.
Fibreglass Stern Tube Model |
Stern Tube Flange Model. |
Fibreglass Stern Tube Model
Product
Number |
Shaft
Diameter |
Length
A |
Fibretube
O.D. |
|
P684/1 |
1 " |
160 |
1-3/4 " (44 mm) |
|
P685/1 |
1-1/4 " |
170 |
2-1/4 " (57 mm) |
|
P686/1 |
1-1/2 " |
175 |
2-1/2 " (64 mm) |
|
P687/1 |
1-3/4 " |
180 |
3 " (77 mm) |
|
P688/1 |
2 " |
205 |
3 " (77 mm) |
|
P689/1 |
2-1/4 " |
200 |
3-1/2 " (77 mm) |
|
P698/1 |
2-1/2 " |
270 |
4 " (100 mm) |
|
P758/1 |
2-3/4 " |
250 |
4-1/2 " (115 mm) |
|
P747/1 |
3 " |
250 |
4-1/2 " (115 mm) |
Stern Tube Flange Model
Product
Number |
Shaft
Dia. |
Length
A |
Length
B |
Dia.
C |
Dia.
D |
Hose I.D.
E |
Length
F |
Length
F |
Center
H |
Center
I |
Dia.
J |
|
P684 |
1 " |
170 |
22.2 |
43.0 |
1-5/16 " |
44 |
57.1 |
76.2 |
38.1 |
55.5 |
5/16 " |
|
P685 |
1-1/4 " |
180 |
30.5 |
50.9 |
1-5/8 " |
50 |
70.0 |
89.0 |
47.7 |
66.5 |
3/8 " |
|
P686 |
1/1/2 " |
185 |
36.5 |
60.4 |
2" |
60 |
89.0 |
101.6 |
65.0 |
79.3 |
3/8 " |
|
P687 |
1-3/4 " |
190 |
38.1 |
66.7 |
2-1/4 |
64 |
95.4 |
114.3 |
70.0 |
89.0 |
3/8 " |
|
P688 |
2 " |
215 |
50.9 |
82.5 |
2-1/2 " |
76 |
114.3 |
140.0 |
89.0 |
114.3 |
7/16 " |
|
P689 |
2-1/4 " |
210 |
61.8 |
82.5 |
2-3/4 " |
76 |
125.0 |
142.5 |
95.4 |
114.3 |
1/2 " |
|
P698 |
2-1/2 " |
280 |
76.2 |
95.3 |
3" |
89 |
137.0 |
155.0 |
98.5 |
120.6 |
1/2 " |
|
For Dimensions of SEAL UNIT
over 2-1/2" email
Sales |
|
