Neutral Silicone Sealant, Waterproof Curing Adhesive, Insulating Glue for Outdoor Metal, Wood, and Stone Underground Lights

• Customization: Available
• Chemical Composition: Silicone Sealant
• Curing Time: Fast Curing: Within 24 Hours
• Model NO.: QMS-808
• Mildew Proof: Not Mildew Proof
• Usage: Construction, Industrial Manufacturing, Transportation
• Bonding Function: Structural Adhesive
• Application: Automobile, Construction, Woodworking
• Material: Silicone
• Classification: Room Curing
• Main Agent Composition: Natural Polymer
• Characteristic: Weatherability
• Promoter Composition: Flexibilizer
• Composition: Organic Material
• CAS No.: 68083-14-7
• Formula: C16h22o2si2
• Einecs: 51852-81-4
• Morphology: Viscous Paste
• Color: Black White Grey Clear
• Transport Package: 24PCS/CTN
• Specification: 240ml/280ml/300ml tube; 600ml sausage
• Trademark: QMAXS
• Origin: China
• HS Code: 3506100010
• Production Capacity: 300000 PCS/Month

Product Description

**QMS-808 Single Component Sealant**  

The QMS-808 is a high-performance, single-component, neutral ketoxime-cured sealant offering medium modulus and exceptional durability. Engineered for demanding building applications, it provides superior UV, acid, and alkali resistance, forming a reliable, high-adhesion seal with excellent weatherproofing on various substrates.  

### **Key Features:**  
- **Neutral Cure (Ketoxime Type):** Non-corrosive and suitable for sensitive materials.  
- **Exceptional Durability:** Resists UV exposure, acids, and alkalis for long-lasting performance.  
- **High Adhesion:** Ensures strong bonding to diverse building materials.  
- **Weatherproofing Excellence:** Maintains superior sealing performance under harsh environmental conditions.  

### **Applicable Materials:**  
The QMS-808 is perfect for the assembly and sealing of:  
- Glass  
- Ceramics and pottery products  
- Fiberglass materials  
- Galvanized metal surfaces  
- Most plastic panels  
- Non-oily wood  
- Anodized or painted aluminum profiles  

### **Use Restrictions:**  
- **Temperature Limitations:** Not suitable for applications where the substrate's surface temperature exceeds 50°C during use.  
- **Curing Environment:** Requires exposure to air for curing and is unsuitable for fully enclosed or air-isolated conditions.  

### **Shelf Life:**  
The QMS-808 retains peak performance for up to **12 months** when stored in ideal conditions.  

With its outstanding resistance to UV rays, chemicals, and weathering, the QMS-808 is an essential solution for modern construction and long-lasting sealing needs.

PERFORMANCE DATA
Test Parameter	Unit	Result Translucent Pigmented
As Supplied Tested at 23ºC and 50% RH
Specific Gravity	g/ml	1.01±0.02	1.46±0.02
Flow (sag or slump)	mm	0	0
Extrusion Rate	ml/minute	165	113
Skin Time	minute	5~10	≤80
Tack-free Time	hour	≤1.0	≤8
Curing time (5mm)	hour	≤12	≤15
As Cured-after 21 days at 23ºC and 50% RH
Durometer Hardness, Shore A	Points	26	36
Elastic Recovery	%	95	94
Movement Capability	%	±25	±30
Tensile/Modulus at 50% Elongation	%	0.26	0.51
Tensile/Modulus at 100% Elongation	%	0.34	0.6
Ultimate Tensile Strength	Mpa	0.36	0.68
Ultimate Elongation at Break	%	200	400

We use raw materials supplied by the world's leading chemical giants,
Chemical material inventory of thousands of tons or more.Have more production capacity than peers.
 The adhesive manufacturing process is completely enclosed to prevent external temperatures and various uncontrollable factors from affecting the product quality.
 FINISHED  PRODUCT STORAGE WAREHOUSE

APPLICATION
Apply to clean, dry and grease-free surfaces. Cut the nozzle at 45°angle to the desired shape and size. For better appearance, cover outside of joint areas with masking tape before application.  
 Tool immediately after sealant application and remove masking tape before sealant skins.

Caution
Uncured silicone can irritate eyes and skin. If contact is made with eyes, flush with water for 15 minutes and seek medical advice. Use in well ventilated area and keep out of reach for children.
LIMITATIONS
1.Unsuitable for curtain wall structural applicatio
2.Do not use for below ground.
3.Do not use when substrate temperature is above 50ºC or surfaces that are wet, oily, greasy, dusty or dirty.
4.The surfaces coated with paint are unsuitable for sealant.
5.Do not clean or treat the sealant with materials, solvents or cleaning agents that may affect or discolor the sealant, particularly during sealant cure.

Scope of application and application scenarios

 STAFF CONSTRUCTION SCENE
PROJECT CASE

HEALTH AND ENVIRONMENTAL INFORMATION
To support Customers in their product safety needs, HONGWAH  has an extensive Product Stewardship organization and a team of Product Safety and Regulatory Compliance (PS&RC) specialists available in each area. 

EXHIBITIONS
CARGO TRANSPORTATION
                                                                           
                                                                  FAQ 


1. Are you a manufacturer?
   
 Yes. We are a manufacturer of silicone sealant with standardized modern production facilities in Guangdong Province, China. A top 5 high-tech company in the industry.
HONGWAH has a 395,000 square foot silicone sealant factory in Jiangmen, Guangdong, China with 16 years of experience in this manufacturing area.
With a total investment of 800 million RMB, we have provided very high quality services to customers from 50 countries. 
Our commitment to product quality and professional production team's honest and uncomplicated manufacturing style ensure our customers' trust in our products' consistent performance and superior performance.
   
2.How soon can I get an updated quote?

We can provide a quote within no more than 24 hours, provided we know all the details of the requirements.


3. Do you accept private label OEM production?
Yes. We can do OEM for our customers.

4. Can I get a sample before I order?

Of course you can. Generally, we provide 1-5 pieces of free samples. The courier fee is borne by the customer. Thank you for your understanding.

5. How long will it take you to complete my order?
It depends on the quantity of your order. Generally, we only need 5 days to produce 20,000 pieces with a capacity of 1,600 tons a month, after receiving your payment.

6. How do you ensure quality?
We have a strict quality inspection system, from raw materials to finished products, the materials must be checked and signed by QC colleagues.

7.Can I visit your factory?
Welcome. Please let me know your travel plans and we will pick you up and book your hotel.

8.How to find the right sealant?
Please tell me the purpose of your application, the base material, the application method and all your requirements.