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One Part Non Curing Fluorosilicone Sealant Dowsi Q4-2805 for Channel

1
MOQ
CN¥954.26/pieces 1-199 pieces
Price
One Part Non Curing Fluorosilicone Sealant Dowsi Q4-2805 for Channel
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Features
Specifications
Other Names: Dowcorning Q4-2805
Classification: Other Adhesives
Main Raw Material: Silicone
Color: Clear
Elongation: 300%
Cure Type: Room Temperature
Viscosity: Medium
Shelf Life: 12 Months
Highlight:

Dowsi Q4-2805

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Non Curing Fluorosilicone Sealant

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Channel Fluorosilicone Sealant
Basic Infomation
Place of Origin: USA
Brand Name: dowsil
Certification: TDS,SDS,Rohs
Model Number: dowsil Q4-2805
Payment & Shipping Terms
Packaging Details: 1 piece
Delivery Time: 5-8days
Payment Terms: T/T,L/C,D/A,D/P,Western Union,MoneyGram
Supply Ability: 1000Piece
Product Description

Dowsi Q4-2805 one-part non-curing fluorosilicone channel sealant designed

Basic Properties​
 
                           Dowsil™ Q4-2805 is a one-part, non-curing fluorosilicone channel sealant designed for extreme fuel and oil environments. Its white putty-like compound is directly injected via air gun into grooves, providing durable sealing in aircraft fuel systems while meeting MIL-S-85334(AS) military specifications.
 
Property Test Method Unit Value
​​Physical Properties​​      
Physical Nature – – Putty-like
Color – – White
Density @25°C ASTM D792 – 1.37
Extrusion Force CTM kg 91
​​Fuel Resistance​​      
Jet Fuel Swell (7d@80°C) CTM % 30
JP-4 Swell (7d@80°C) CTM % 12
JP-5 Swell (7d@80°C) CTM % 12
Jet Fuel Weight Loss* CTM % 2.5
​​Adhesion​​      
2024 Clad Aluminum CTM – Excellent adhesion
 
Product Description​
 
                          This sealant maintains consistent performance from -55°C to +200°C, withstanding prolonged immersion in jet fuels (e.g., JP-4, JP-5). Its flow-control particles enable rapid injection at reduced pressures, while slight swelling upon fuel exposure actively tightens seals – a critical feature for pressure fluctuations caused by aerodynamic heating in fuel tanks.
 
 
Characteristics
 
Industry-leading fuel resistance: 30% swell in Jet reference fuel (7 days @80°C), 12% swell in JP-4/JP-5 fuels, with ≤2.5% weight loss. Its non-curing formulation ensures long-term flexibility, resists shock/vibration/thermal cycling, and contains no catalyst. Exhibits excellent adhesion to 2024 clad aluminum (adhesive strength > cohesion strength).
 
 
Application Scenarios​
 
  • Primarily used in military/commercial aircraft fuel tank channels (e.g., F-4, A-6A), applied via Grover No.223 gun with Semco adapter.
  • Supports emergency repairs without defueling.
  • Extended applications include racing fuel systems and chemical plant oil-resistant piping (Note: Industry-specific data for this exact product is not publicly documented; based on sector practices).
 
Specification
Product Name
Q4-2805
Brand
Dowsil
Specifications
212g/tube
type of shipping
Refrigerated transportation
 
FAQ
1.How can l get the price? -We usually quote within 24 hours after we get your inquiry(Except weekend and holidays)
-lf you are very urgent to get the price, please email us or contact us in other ways so that we can offer you a quote.
2. Can i buy samples placing orders?
-Yes.Please feel free to contact us.
3.What is your lead time? -It depends on the order quantity and the season you place the order.
-Usually we can ship within 7-15 days for small quantity, and about 30 days for large quantity.
4.What is your payment term? T/TWestern UnionMoneyGramand Paypal.This is negotiable
5.What is the shipping method? -It could be shipped by seaby air or by express(EMSUPSDHLTNT,FEDEX and ect)
Please confirm with us before placing orders.
6. How do you make our business long-term and good relationship? -1. We keep good quality and competitive price to ensure our customers benefit -2. We respect every customer as our friend and we sincerely do business and make friends with them,no matter where they come from.
One Part Non Curing Fluorosilicone Sealant Dowsi Q4-2805 for Channel 0
Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this product

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

A
Azizul Ishak
Malaysia May 19.2026
Helpful (3)
item well packaged in box. Seller very responsive and professional on buyer concern. item was shipped very quick. Shipper Fedex very professional
Tag:

High Performance Thermal Grease

Fast Cure Silicone Adhesive

Silicone Adhesive Sealant

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