The Lasdrop Original “Bellows” seal is a face seal that features a vibration absorbing bellows, ideal for use on sailboats and workboats. Specially balanced for smooth rotation, this model utilizes a 316 stainless steel and carbon graphite for its sealing surfaces. Like all Lasdrop models, a water lubricated bearing is designed in the assembly to insure correct alignment with the shaft.

• The seal ring is 316 stainless steel, set in a counter bore in the assembly, eliminating metal to metal contact and risk of electrolysis.
• The clamp ring assembly uses two clamps for maximum strength to secure to the shaft. This provides proper balancing, and also prevents galling and or damage to the shaft.
• To insure the “O” ring is not damaged from a key way or burrs during installation, it is assembled to the shaft after the assembly reaches its final location.
• ARMORFLEX bellows we utilize are second to none. This product is constructed of silicon rubber, hand wrapped with three layers of fiberglass on the inside. The unit is then vulcanized, combining superior strength and durability with unsurpassed resistance to heat and fuels. This type of construction also prevents rotting or delamination.
• Each kit includes AWAB hose clamps that are made 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.
• Available in shaft sizes of 3/4” – 8” (100mm – 200mm) in diameter with a stern tube of up to 10 ½”. We can accommodate a stern tube flange of up to 18”.
• All units have dual water injection ports including necessary hardware. For 7/8” to 1” seals, dual port available upon request.
• Rated “Best” by Powerboat Reports.





We're providing you with dimensions that are needed to insure your seal will fit your vessel. Modifications may be available, please contact our office with further inquiries.
 
Bellows
Model #
A
B
C
D
ER300VI 3 5-5.5 6 11.025
ER314VI 3.25 5-5.5 6 11.025
FR314VI   6-6.5 6.5 11.025
ER312VI 3.5 5-5.5 6.5 11.025
FR312VI   6-6.5 6.5 11.025
ER334VI 3.75 5-5.5 7 11.025
FR334VI   6-6.5 7 11.025
ER400VI 4 5-5.5 7 11.025
FR400VI   6-6.5 7 11.025
FR-412-VI 4.5 6-6.5 8 11.15
GR-415-VI   7-7.5 8 11.15
FR-500-VI 5 6-6.5 8.5 11.15
GR-500-VI 7-7.5 8.5 11.15
HR-500-VI   8-8.5 8.5 11.15
GR-512-VI 5.5 7-7.5 9 11.15
HR-512-VI   8-8.5 9 11.15
JR-512-VI   10-10.5 10.5 13.15
GR-600-VI 6 7-7.5 9 11.15
HR-600-VI 8-8.5 9 11.15
JR-600-VI   10-10.5 10.5 13.15
GR-612-VI 6.5 7-7.5 10 11.4
HR-612-VI   8-8.5 10 11.4
JR-612-VI   10-10.5 10.5 13.4
HR-700-VI 7 8-8.5 10 11.65
JR-700-VI   10-10.5 10.5 13.65
HR-712-VI 7.5 8-8.5 11 11.65
JR-712-VI   10-10.5 11 13.65
JR-800-VI 8 10-10.5 11 13.65
Bellows
Model # Descrption Retail
ER300VI 3 Shaft, 5 - 5 5/8 Stern tube, Dual water injection $1,086
DR314VI 3 1/4 Shaft, 4 - 4 1/2 Stern tube, Dual water injection $1,270
ER314VI 3 1/4 Shaft, 5 - 5 5/8 Stern tube, Dual water injection $1,344
ER312VI 3 1/2 Shaft, 5 - 5 5/8 Stern tube, Dual water injection $1,464
FR312VI 3 1/2 Shaft, 6 - 6 5/8 Stern tube, Dual water injection $1,550
GR312VI 3 1/2 Shaft, 7 - 7 5/8 Stern tube, Dual water injection $1,635
ER334VI 3 3/4 Shaft, 5 - 5 5/8 Stern tube, Dual water injection $1,720
FR334VI 3 3/4 Shaft, 6 - 6 5/8 Stern tube, Dual water injection $1,865
ER400VI 4 Shaft, 5 - 5 5/8 Stern tube, Dual water injection $3,250
FR400VI 4 Shaft, 6 - 6 5/8 Stern tube, Dual water injection $3,500
ER414VI 4 1/4 Shaft, 5 - 5 5/8 Stern tube, Dual water injection $3,250
FR414VI 4 1/4 Shaft, 6 - 6 5/8 Stern tube, Dual water injection $3,500
FR412VI 4 1/2 Shaft, 6 - 6 5/8 Stern tube, Dual water injection $3,750
GR412VI 4 1/2 Shaft, 7 - 7 5/8 Stern tube, Dual water injection $3,850
FR434VI 4 3/4 Shaft, 6 - 6 5/8 Stern tube, Dual water injection $3,900
GR434VI 4 3/4 Shaft, 7 - 7 5/8 Stern tube, Dual water injection $4,000
FR500VI 5 Shaft, 6 - 6 5/8 Stern tube, Dual water injection $4,050
GR500VI 5 Shaft, 7 - 7 5/8 Stern tube, Dual water injection $4,150
HR500VI 5 Shaft, 8 - 8 5/8 Stern tube, Dual water injection $4,350
GR512VI 5 1/2 Shaft, 7 - 7 5/8 Stern tube, Dual water injection $4,650
HR512VI 5 1/2 Shaft, 8 - 8 5/8 Stern tube, Dual water injection $4,700
GR600VI 6 Shaft, 7 - 7 5/8 Stern tube, Dual water injection $5,050
HR600VI 6 Shaft, 8 - 8 5/8 Stern tube, Dual water injection $5,150
JR600VI 4 Shaft, 10 - 10 5/8 Stern tube, Dual water injection $6,500
Bellows (Metric)
Model # Description Price
ER75mmVI 75mm Shaft, 127mm - 143mm Stern tube, Dual water injection $1,086
DR80mmVI 80mm Shaft, 102mm - 114mm Stern tube, Dual water injection $1,270
ER80mmVI 80mm Shaft, 127mm - 143mm Stern tube, Dual water injection $1,344
ER85mmVI 85mm Shaft, 127mm - 143mm Stern tube, Dual water injection $1,464
FR85mmVI 85mm Shaft, 153mm - 169mm Stern tube, Dual water injection $1,550
ER90mmVI 90mm Shaft, 127mm - 143mm Stern tube, Dual water injection $1,464
FR90mmVI 90mm Shaft, 153mm - 169mm Stern tube, Dual water injection $1,550
GR90mmVI 90mm Shaft, 178mm - 194mm Stern tube, Dual water injection $1,635
ER95mmVI 95mm Shaft, 127mm - 143mm Stern tube, Dual water injection $1,720
FR95mmVI 95mm Shaft, 153mm - 169mm Stern tube, Dual water injection $1,865
ER100mmVI 100mm Shaft, 127mm- 143mm Stern tube, Dual water injection $3,250
FR100mmVI 100mm Shaft, 153mm - 169mm Stern tube, Dual water injection $3,500
ER105mmVI 105mm Shaft, 127mm - 143mm Stern tube, Dual water injection $3,250
FR105mmVI 105mm Shaft, 153mm - 169mm Stern tube, Dual water injection $3,500
FR110mmVI 110mm Shaft, 153mm - 169mm Stern tube, Dual water injection $3,750
GR110mmVI 110mm Shaft, 178mm - 194mm Stern tube, Dual water injection $3,850
FR115mmVI 115mm Shaft, 153mm - 169mm Stern tube, Dual water injection $3,750
GR115mmVI 115mm Shaft, 178mm - 194mm Stern tube, Dual water injection $3,850
FR120mmVI 120mm Shaft, 153mm - 169mm Stern tube, Dual water injection $3,900
GR120mmVI 120mm Shaft, 178mm - 194mm Stern tube, Dual water injection $4,000
FR125mmVI 125mm Shaft, 153mm - 169mm Stern tube, Dual water injection $4,050
GR130mmVI 130mm Shaft, 178mm - 194mm Stern tube, Dual water injection $4,150
HR130mmVI 130mm Shaft, 204mm - 220mm Stern tube, Dual water injection $4,350
GR140mmVI 140mm Shaft, 178mm - 194mm Stern tube, Dual water injection $4,650
HR140mmVI 140mm Shaft, 204mm - 220mm Stern tube, Dual water injection $4,700
GR150mmVI 150mm Shaft, 178mm - 194mm Stern tube, Dual water injection $5,050
HR150mmVI 150mm Shaft, 204mm - 220mm Stern tube, Dual water injection $5,150
JR150mmVI 150mm Shaft, 254mm - 270mm Stern tube, Dual water injection $6,500

We also manufacture custom seals designed to fit your application. Please contact us for custom prices and availabilty.

Installation Tips
• Do not use oil or grease. During operation on a mechanical face seal, water hydroplanes between the seal surfaces for cooling and lubrication. This will distort the hydroplaning and will cause a spray or mist during operation.

• Be cautious not to scratch, chip or the like to the seal surfaces. This will also cause an interruption in the hydroplaning.

• Use liquid hand soap for ease of assembly.

• When any service is performed, it is recommended the vessel be out of the water.

• Do not exceed recommended compression. Orange (current) bellows model ½”, Black bellows ¾” and Generation II ¼”.

• Do not remove shaft from coupling or removal of engine while vessel is in water. This may lead to seal surfaces opening up.

• Do not tighten factory installed hose clamps on friction ring assembly. If needed contact factory.

• Do not remove or tighten hose barb in seals using OIN (Oil Impregnated Nylon, green in color) as a friction ring assembly. Contact factory.

• Periodically insure water injection is present during engine running at all speeds.

• When vessel is out of the water for any period of time, it is recommended seal is washed down with fresh water.

When any unusual conditions occur contact customer support.

 

 

 

 

 

 

 

 

 

 

 

All Lasdrop models are complete kits for quick and easy installation. Models are available to accommodate shaft sizes of 3/4” to 8" to fit stern tube diameters up to 10 1/2”. Metric and custom sizes are available. We also offer a complete line of flange adapters to allow for any stern tube configuration.