High quality pu sealant for Marine/boat/Ship, waterproof and acid proof seal/new cabin cruiser boats adhesive

$2.00 - $3.00
Min. Order
2000 Pieces
Company Information

Shanghai Sepna Chemical Technology Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
1 Year Paid Supplier Gold Supplier Onsite Check
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Quick Details

Port: Shanghai, Any port in China
Payment Terms: L/C,D/P,T/T,MoneyGram,Cash, Paypal etc.
Supply Ability: 200000 Ton/Tons per Year
CAS No.: 584-84-9
Other Names: pu adhesive
MF: C9H6N2O2
EINECS No.: 210-898-8
Place of Origin: Shanghai China
Classification: Other Adhesives
Main Raw Material: Polyurethane
Usage: Construction,Fiber &amp; Garment,Footwear &amp; Leather,Packing,Transportation,Woodworking,glass, vehicles, metal
Brand Name: punade
Model Number: PU816
Advantage: Acid proof
sagging properties: 0mm
MOQ: 500-2000pcs
Component: one part
Appearance: Black paste
Temperature: -40-80 ℃
Manufacture: R&amp;D Manufacture
We Who: Senior Member of Shanghai International Chamber of Commerce
Client: Volvo, Fuyao,Longking, Jabil etc.
Certification: ISO9001,MSDS, Test Report etc.
Packaging Detail: 1. 310ml Cartridge, 20pcs per caton 1080pcs per cbm 33000pcs per 20ft container, 1080pcs per cbm 2. 600ml Sausage, 20pcs per carton 1cbm can take 800pcs 20ft container can take 20000pcs


 Senior Member of Shanghai International Chamber of Commerce


  R&D Manufacturer



Model Number

PU 816

Main Raw Material








Volatile content




Touch dry time




Tensile strength


Elongation at break


Application temperature


Curing speed

3 - 5Mm/24hrs






























 PU 816 (2)









PU816 is one component polyurethane sealant special for ship



1. Good compatibility between new and used adhesives, easy to mend.

2. High tensile, elasticity, good cohesive force and no cracking

3. Single component, moisture curing, the thixotropy are extremely good, the construction are convenient

4. Solvent-free, non-toxic tasteless after curing, environmental protection

5. Good wear-resisting performance, as well as Oil, acid, alkali and salt fog resistance, no mildew

6. Puncture-resistance, anti-aging, weathering, as well as resistance to fatigue.

7. Good bonding performance with many kinds of substrates

8. No corrosion on the substrate surface, Paintable and polishable



1. Good sealing performance for expansion joint in ship

2. Sealing for waterproof installation of the cabin and floor 

3. Bonding and sealing of ship glasses

4. Sealing and water-proof for other structures' gap at joint and holes














Clean before operation

Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust, grease, frost, water, dirt, old sealants and any protective coating. Dust and loose particles should be cleaned.


Direction of operation

Tool:Manual or pneumatic plunger caulking gun


For cartridge

1.Cut nozzle to give the required angle and bead size

2.Pierce the membrane at the top of the cartridge and screw on the nozzle 


3.Place the cartridge in an applicator gun and squeeze the trigger with equal strength


For sausage

1.Clip the end of the sausage and place in barrel gun

2.Screw end cap and nozzle on to barrel gun

3.Using the trigger extrude the sealant with equal strength


Attention of operation

Wear suitable protective clothing, gloves and eye/face Protection. After contact with skin, wash immediately with plenty of water and soap. In case of accident or if you feel unwell, seek medical advice immediately



Package                                                                   Storage

310ml cartridge, 20pcs/carton                              Keep in cool and ventilative place

400ml/600ml sausage, 20pcs/carton                 Temperature≤25°C, humidity≤50%RH

Color:Black                                                               Shelf life: 9 months






Q: What's your delivery time?

A:  Normally, the delivery time of sample order is 3-7days 

      Bulk order is 10 days after received the PO and deposit

Q: Can I get samples?

A: YES! Usually one piece 600ml Sausage or 1kg tin free sample supplied for your quality check.

 Three ways to get free samples below

 1. Supply us your import express account DHL/Fedex for sample shipping

 2. You can inform your DHL/Fedex to pick up the sample from Sepna factory.

 3. Pay  express fee to Sepna company by Paypal or TT, we will arrange the sample delivery on our side.


Q: What is your MOQ?

A:  Our MOQ is 1000pcs 600ml Sausages.


Q: Can you do OEM lable for the products?

A: YES, the OEM service such as buyer labels are accepted as long as your order reach our standard amount.


Any more questions, please contact us anytime!