Name: DOWSIL Q5-8401
Brand: Dow Silicones Corporation
SKU: DOWSIL Q5-8401

Main features

24-Hour Pot Life at 25 deg C
90-Minute Cure at 120 deg C
830 psi Aluminum Lap Shear

Product Description

DOWSIL Q5-8401 Adhesive Kit is a two-part, 1:1 dark-gray silicone adhesive designed for heat-cure bonding and sealing. Part A and Part B have typical viscosities of 113,850 cP and 76,325 cP, while the mixed material is 77,425 cP. A 24-hour pot life at 25 deg C provides an extended processing window, followed by a typical heat cure of 90 minutes at 120 deg C. The cured adhesive reaches Shore A 61 hardness, 875 psi tensile strength, 210% elongation, and 830 psi lap shear on aluminum.

Key features

24-Hour Pot Life at 25 deg C: Typical pot life applies to the mixed adhesive before heat cure.
90-Minute Cure at 120 deg C: The listed heat-cure condition develops the cured silicone adhesive.
830 psi Aluminum Lap Shear: Typical cured elongation is 210%.

Applications

Sealing lids and housings; attaching baseplates; gasketing; connector sealing; engine controllers; ABS; transmission controllers.

TDS, SDS & Technical Documents

Technical Specifications

General Properties

Component System

Two (A | B)

Pot Life

24 hours

Specific Gravity

1.31

Mechanical Properties

Elongation

210 %

Additional Information

Technical properties

As-supplied / before-processing properties

Typical processing values apply to the exact Q5-8401 Part A/Part B kit; component viscosities are shown separately.

Property	Value	Unit	Method / condition
Viscosity - Part A	113,850	cP	Typical; Part A
Viscosity - Part B	76,325	cP	Typical; Part B
Viscosity - mixed	77,425	cP	Typical; mixed material
Pot life	24	h	25 deg C
Heat-cure schedule	90	min	120 deg C