AS38 High Temperature Gasket Maker Sealant For Automotive

• Customization: Available
• CAS No.: None
• Formula: None
• Model NO.: HM-AS38
• EINECS: None
• Bonding Function: Structural Adhesive
• Morphology: Solid-State
• Application: Automobile
• Classification: Room Curing
• Characteristic: Acetoxy Sealant
• Color: White or Others
• Transport Package: 85ml 300ml 600ml / Box
• Specification: N/M
• Trademark: Howell
• Origin: China
• HS Code: 3506100010
• Production Capacity: 100000-1000000 Pieces

Product Description

 

High Temperature Gasket Maker Sealant HM-AS38
Items	C*a/T*b/S*c/O*d	Unit	Typical Value	Requirement	Test Std.	Eqv. Std.
Appearance		-	-	Fine, uniform paste without bubbles, crusts, gels	Test StQ/QY-00-T001d	-
Density		g/cm3	1.3	1.3±0.03	GB/T 13477.2	-
Tack free	Properties Uncured	min	10	≤10	GB/T 13477.5	ASTM D2377:2000
Hardness, Shore A	Properties Cured	-	40	40±3	GB/T 531.1	ISO 7619-1:2004
Tensile Strength	Properties Cured	MPa	1.8	≥1.8	GB/T 528	ISO 37:2005
Elongation at break	Properties Cured	%	250	≥250	GB/T 528	ISO 37:2005

These figures are only intended as a guide and should not be used in preparing specifications.

PRODUCT DESCRIPTION

AS38 Acid Gasket-Free Silicone Sealant is a one-component, acid-curing, high-modulus silicone rubber; It has good elasticity and displacement deformation ability, good adhesion to various building materials, excellent oil resistance, high and low temperature resistance, long-term working temperature -40°C~260°C, and short-term temperature resistance can reach 280°C.
 

APPLICATIONS

The temperature is lower than 260°C, sealing and bonding between materials
Automobile engine, gearbox, oil pan
Bonding of chimney pipes
Other general purpose caulking, waterproof sealing

USAGE

It cannot be used for structural assembly
Do not use on surfaces where plasticizers or solvents may leak out, as this may cause damage to the sealant
It is not recommended to use it in a completely sealed space, which will cause it to not be able to cure completely due to lack of moisture
It is not recommended to use it in places that have been immersed in water for a long time
It is not recommended for structural surfaces that will come into direct contact with food
It is not recommended to use it on medical devices.
 

CONSTRUCTION

1. Cleaning of substrate surface

(1) The purpose of surface treatment before bonding is to remove oil, dust, surface damage and loose natural oxide film on the surface of the base material during the production and transportation process, so as to roughen the surface of the base material and form a surface suitable for mechanism embedding. morphology, while improving surface chemical properties and improving durability under the influence of stress environmental factors.

(2) Cleaning solvents are usually isopropyl alcohol, methyl ethyl ketone, and xylene. The cleaning cloth should be white, clean, soft, non-linting cotton.

(3) Use the "double cloth wiping" method to clean the surface of the substrate. Soak a clean cloth with solvent. Wipe the surface of the substrate in only one direction. Before the solvent evaporates, immediately use a second cloth with a clean dry surface. Wipe the solvent off the surface of the substrate.

(4) Do not put the soaking rag into the container for soaking, otherwise the clean solvent will be contaminated and the cleaning effect will be affected.

(5) Only clean the bonding and sealing construction part within 1 hour each time. Do not expose the cleaned substrate surface to the air for too long.

2. Make a bet
Use plastic tape to cover the surface near the interface to ensure that the sealing working lines are perfectly neat.
Cut the mouth of the hose, install the pointed tube, and then cut it at a 45° angle according to the size of the gap.
Install the sealant gun and press out the sealant along the gap at a 45° angle to ensure that the sealant is in close contact with the surface of the base material. When the joint width is greater than 15 mm, sealant needs to be applied multiple times. After gluing, trim the surface with a knife to remove excess sealant, then tear off the tape. If there are stains, use a damp cloth to remove them.

3. Pad material
Open-cell polyurethane or closed-cell polyethylene foam padding rods and polyethylene materials are recommended lining materials. Prevent sealant from sticking on three sides.

 

STORAGE & SHELF LIFE
Store the original sealant in a dry place, the temperature should not be higher than 27 degrees, the storage period is 12 months from the date of production.
 

PACKAGE

Standard 300ml plastic plastic bottle packing, 24 pcs/ctn; 500ml flexible film packing, 20 pcs/ctn;200L iron drum.
Store the original sealant in a dry place, the temperature should not be higher than 27 degreesCelsius, from the date of production, the storage period of 12 months.

 

Company Profile

Nanjing Howell New Materials Technology Co., Ltd.
Room 501, Unit 7, Xingzhihui, Xinghuo Rd 19th, Jiangbei New District, Nanjing, (211899), Jiangsu, China.

American Warehouse:Add: 1006 CROCKER RD, DOOR E5, WESTLAKE, OH 44145