Sepna S857 One-Part, Heat-Cure Epoxy Seam Sealant That Offers Excellent Adhesion to Primed or Bare, Oily Metals

• Customization: Available
• CAS No.: 9009-54-5
• Formula: CH3h8n2o
• Model NO.: S857
• Bonding Function: High Temperature Resistant Adhesive
• Application: Automobile, Construction
• Material: Acrylic
• Classification: Heat Curing
• Main Agent Composition: Heat Curing
• Characteristic: Waterproof
• Promoter Composition: No
• Composition: Acrylic Polyurethane/Epoxy
• Color: White
• Type: Single Component
• Main Raw Material: Acrylic Polyurethane/Epoxy
• Advantage: High Temperature Sealant, Heat Curing, PVC Free
• Usage: Steel or Electrocoat and Powder Paint
• OEM/ODM: Free OEM&ODM Service
• Shelf Life: 9 Months
• Transport Package: Air, Sea, Road and Railway.
• Specification: 310ml
• Trademark: SEPNA
• Origin: China
• HS Code: 3506100090
• Production Capacity: 1000000000

Product Description

Our products

 
 

SEPNA S857 one-part, heat-cure epoxy seam sealant that offers excellent adhesion to primed or bare, oily metals
 

S857 is also well suited for sealing applications on E-coated metals before subsequent paint processes (including powder coating processes).

S857  is designed as an adhesive/sealant. As an adhesive, it is usually used in combination with spot welding, riveting, clinching, and other mechanical fastening techniques to fix the parts until the curing process is completed. Bonding of oily substrates is possible up to an oil amount of 3 g/m2.

This product is suitable for professional experienced users only.
Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

 

S857 is a one-component solvent-free heat-curing sealant based on PVC/ Acylate.

 

S857 is cured by heat Curing depends both on temperature and elapsed time.
 

The most suitable heat sources are convection ovens.

 

The minimum heating temperature is 175°C (347°F), while

the maximum temperature must not exceed 230°C (446°F). It is

mandatory to perform tests with original parts to ensure proper

curing and function of the bonded part under original conditions

For further information contact the Technical Service Department of SEPNA Industry.

 

 

Product Advantages

S857 
 

230ºC/446ºF 

Heat curing

 

High-temperature resistance of

 

(180-230°C/356-446ºF),

no aging and discoloration

 

 

Suitable for powder-coating processes

 

 

 

Adheres well to most E-coated substrates and oily metal substrates.
 

 

Eco-friendly, PVC-free

 

Good tooling properties

 

Spot welding is still possible

Does not contain solvents or PVC

Typical Applications

 

 

Suitable for powder-coating processes Matching powder paint

S857 is often used by paint and powder companies when preparing aluminium panels for automotive, construction and manufacturing industries in general. Panels can be bonded together with this adhesive more quickly than using traditional methods. Stainless steel stiffeners can be confidently bonded to panels prior to paint cycles within the cladding and commercial facade industry.

 

1. Used for clean metal or electro coat before powder coat.

2. For bonding clean the steel plate.

3. For bonding clean electrophoresis plates.

4. For sealing welds in the body.

5. For sealing welds outside the body.

6. It is used for sealing, waterproofing, dustproofing, and anti-corrosion of the vehicle body.

 

Technical Data Sheet

 
 

Items	Standard	Specification	Typical value
Appearance	Visual	White, homogeneous paste	White
Sagging	GB/T 13477	<1	0
Density /g/cm^3	GB/T 13477	1.50±0.1	1.45
Solid content / %	GB/T 2793	>98	99
Extrusion rate / g/10s	25ºC,Φ0.2mm,0.35MPa	40±10	35
Curing speed/min	200ºC	<60	30
Hardness /Shore D	200ºC * 30min	20±5	22
Tensile strength /Mpa	GB/T 528	≥1.5	2.0
Elongation at break %	GB/T 528	≥100	110
Adhesion to E-coat and bare steel	80ºC*30min	Excellent	Excellent
Heat resistance	80ºC*60min	Excellent	Excellent
Application Temperature	ºC	15ºC-+35ºC	--
Shelf life	Month	9	--

 

Application Process

 

Cure Mechanism

S857 is cured by heat. Curing depends both on temperature and elapsed time. The most suitable heat sources are convection ovens. The minimum heating temperature is 180°C (356°F), while the maximum temperature must not exceed 230°C (446°F). It is mandatory to perform tests with original parts to ensure proper curing and function of the bonded part under original conditions. For further information contact the Technical Service Department of SEPNA Industry.

 

Method of Application

To obtain the best strength, the following curing conditions should be followed: >175ºC(347°F)*30 min. Different curing conditions will lead to changes in shear strength.

 

Unpacks: S857 can be applied with electric or pneumatic-driven piston-operated guns. Drums: Dispensing from drums requires the use of standard hydraulic or pneumatic drive pumping equipment. For advice on selecting and setting up a suitable pump system, contact the System Engineering Department of the SEPNA Industry.

 

 

PACKING AND STORAGE

 
 

                          310ml/cartridge                                         25KG/Bucket                                                          230kg/ IBC

 

Package specification:   310ml/cartridge, 24 cartridge/ box 25KG/Bucket 230kg/ IBC

Storage: is recommended to store in an environment with a temperature of 5~25 ºC(41°F-77°F).

Transportation:   moisture-proof, rainproof, sunproof, high-temperature roof, keep away from heat sources, handle with care, and do not squeeze or collide.

 

Company Profile

 

SEPNA focuses on the R&D and production of advanced new materials. Headquartered in Shanghai, the factory is located in Qidong High-tech Zone, Jiangsu Province. It is a modern technology factory with an area of 20000 square meters.

SEPNA factory uses an advanced MES automatic quality control system and a full-process ERP management system for strict quality control. 

SEPNA factory and products have passed many international system certifications. Such as ISO9001-2015, SGS, 16949, and other certificates.

SEPNA adheres to the values of being "customer-centric, take technology as the blood, and focus on high-quality", adheres to the development concept of "DEVELOP DEPEND ON THE TECHNICAL INNOVATION, LIVE DEPEND ON THE QUALITY,"; Focus on providing customers with more accurate and safe products with "bonding, sealing and protection" functions.

SEPNA product lines, from flexible sealing, and fixed bonding to the development of multiple curing forms products, 
can fully match the production and manufacturing processes of different customers, and SEPNA can provide all customers 
with more options, higher efficiency, and better quality product solutions, as well as omnidirectional customized services and support.

 

SEPNA closely connects customers/suppliers/employees/partners with the mission of "Zero SL Bonds Us Together! ". And continues to promote technology and product innovation, service innovation, and talent innovation, better combine the value of products, services, and talents to make products more perfect, make industrial manufacturing more efficient, and provide more valuable products and service solutions for the high-end and high-end manufacturing industry!
 

 

R&D TEAM

 

Why Choose Us

1. Outstanding manufacturers and powerful factories.

2. OEM / ODM AVAILABLE (Professional design team providing package design solutions for OEM / ODM customers free of charge.
3. Free Samples.
4. Imported Raw Materials and Test Equipment.




5. Strict quality control (We have passed GB/T 19001-2016, IS09001:2015, and IATF 16949:2016 quality system authentication, and we can provide ROHS/SGS/ MSDS certification of products).
6. Deliver in 7-15 Days after payment.
7. Excellent QC Team and R&D Team.
8. Provide professional application technology solutions.
9. Complete the after-sales service system.
10. Partners with Top 500 Global Companies.


 Sepna's products have been widely used in the international market, mainly in North America, South America, Asia, Southeast Asia the Middle East, Oceania, etc.

Until now, she has serviced nearly 1000 enterprises all over the world.



 

Our customers and Exhibition

 

Certification

 

About Transportation

Samples: Express ( FedEx, DHL, TNT, UPS, etc.)
Cargo:      By Sea ( FCL / LCL), By Air, By Railway, By truck, etc.

FAQ:

Q1. How to get an accurate quotation from us?
A1. Please provide your requirements, product specifications, quantity, and trade terms. 


Q2. Can you provide OEM service?
A2.Yes.Private labeling service is available

Q3. How to be SEPNA's distributor?

A3.As the growing of Sepna's global business, we need to find more and more distributors and agents
worldwide. SEPNA will provide the best solution and service for our partners.

For more information, pls contact our salesperson or call us:[phone]

Q4. Can I get a sample?
A4. Yes. We offer free samples

Q5. What is your product's shelf life?
A5.9 months when stored in cool dry and well-ventilated areas under 25ºC.