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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

Non Curing Fluorosilicone Sealant

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

Gallery

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

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

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.

Contact Person :	ouyang
Tel :	+86 13510063180
Fax :	86-0769-82622296

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

Dowsi Q4-2805

Non Curing Fluorosilicone Sealant

Channel Fluorosilicone Sealant

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

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