Product Description
Jointseal JS250 Polyurethane Sealant Primer is one-component , black liquid.
It is suitable for between glass with black ceramic border and painted frame's bonding for precoat , improve to sealant bonding for substrates.
It is a type of strong bonding material that is commonly used in construction, woodworking and automotive industries. it is a versatile adhesive that canbond various materials, including wood, metal, plastic and glass. Polyurethane adhesiveis waterproof, heat resistant and provides a strong, flexible bond that can with stand heavy loads and stress.
TYPICAL APPLICATIONS
Suitable for promoting the adhesion of other PUR adhesives/sealants to glass, glass caramic, various plastics and metals.
FEATURE
1. Film dispersed uniformly, good hiding.
2. Fast tack free time.
3. Resistant to high temperature and water, good durability in harsh environment such as high temperature and humidity.
4. Good adhesion to various inert materials.
Store below 90°F (32°C) in a dry place. JOINTSEAL primer 250 has a usable life of 12months from date of
manufacture. Refer to product packaging for use-by date.
RESTRICTIONS
1. Keep away from children.
2. Avoid contacting with skin and eye. For skin contacted, remove the sealant by cloth, wash skin thoroughly with soap and water. For eye contacted, hold eyelids apart and flush thoroughly with water, contact physician.
DIRECTIONS FOR USE
APPLICATION TEMPERATURE:+5ºC to +45ºC
1.Clean with a cleaning agent,to keep the substrate surfaces completely clean(JOINTSEAD also provide the cleaning agent for yourconvenience).
2.Use the sealant after cleaning agent dries,around 1~2mins ater.You can use two different cloth,one for cleaning agent,and the otherfor sealant.(Notice that the two can't be mixed use together,and the second cloth will be better purified cotton and no picking).
3.For better appearance,cover outside of joint areas with masking taps before application.
4.Cut nozzle to desired size and extrude sealant to joint areas.Tool immediately after sealant application,make it smooth and removemasking tape before sealant skins.
Product Parameters
TECHNICAL FEATURES |
Items |
Unit |
Typical Value |
Requirement |
Test Std |
Eqv.Std |
Appearance |
/ |
OK |
Fine,uniform paste |
Q/JL-00-T001 |
/ |
Density |
g/cm3 |
1.02 |
1.02±0.02 |
GB/T 13477.2 |
/ |
Tack free//Finger |
min |
10 |
≤20 |
GB/T 13477.5 |
ASTM D2377: 2000 |
Solid content |
% |
33.8 |
25-40 |
GB/T d3477.6 |
ISO 7390: 1987 |
Viscosity |
mPa* s |
16 |
10-50 |
Q/JL-00-T005 |
/ |
Company Profile
Founded in 2009, Jointseal sealant&adhesive holds the leading market position in the industrial and construction with well-known brand. Jointseal is committed to providing bonding&sealing solutions, which include silicone, polyurethane, acrylic, epoxy resin and cyanoacrylate adhesive. Raw materials are imported from world famous brands (Dow, Wacker, Shin-Etsu, Kaneka)and the plant is equipped with advanced automated production systems from Italy and Germany.
Jointseal product passed strict quality test standard and got ISO, SGS, CNAS and CE certificate.
Customer satisfaction is always our top priority. Short lead time, good guaranteed quality and competitive prices are our main advantages. We have built Long-term business relationships with distributors from Australia, Europe, South America, Southeast Asia and Middle East.
Certifications
R&D center
Jointseal aims to provide permanent solutions to meet the needs of professional and individual users. In order to achieve this goal, significant investments in research and development activities have been made.
In the market, we are endeavoring to provide high-quality, cost-effective, and higher performance with products. Jointseal is an expert working with chemists and chemical engineers. At the same time working together with Anhui University to increase know
R&D center has the following functions:
- Sealants(silicone, MS, PU)test center
- Adhesive(cyanoacrylate, epoxy resin)test center
- Aerosols(foam, spray paint)test center
Jointseal, as R & D works in all its activities is moving with the goal of generating permanent solutions to the problems of consumers and the market
Package&Shipping

Our Advantages
Quality products and perfect after-sales service are the key to win your trust. Therefore, we are always committed to providing high quality products and ensuring that every customer can enjoy timely and professional after-sales service.
1. The most professional adhesive&sealant expert in China
2. Excellent adhesive&sealant solution provider.
3. Quality guaranteed, raw materials from world famous brands(Wacker, Kaneka, Dow)
4. Fast delivery. Three plants can guarantee the production capacity of 180 tons/day.
5. Rich experience about working with the world famous brands. Our factory has working with some Fortune 500 compaines for long time.
An overview of all previous exhibitions, and a practical understanding of customer needs.
Please contact me for your bonding&sealing services.
FAQ
1.Can you do OEM or ODM?
We have professional and experience desin team to do OEM/ODM design. we can help you to finish it according to combining your inspiration and ideas.
2.Can I get a sample to test quality?
Of course.,we provide 1-3 pieces free samples.
3. What is the delivery time for purchased order?
At normal condition, the delivery time is 20-30 days for purchase order.