638 Cylindrical metal bearing adhesive for fixation

JOM638 is designed for the bonding of cylindrical fitting parts, particularly where low viscosity is required. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage from shock and vibration.

product details

PRODUCT DESCRIPTION

JOM638 provides the following product

characteristics:

Technology	Acrylic
Chemical Type	Methacrylate ester
Appearance (uncured)	Green liquidLMS
Fluorescence	Positive under UV lightLMS
Components	One component – requires no mixing
Viscosity	Medium
Cure	Anaerobic
Secondary Cure	Activator
Application	Retaining
Strength	High

TYPICAL PROPERTIES OF UNCURED MATERIAL

Specific Gravity @ 25 °C 1.1

Flash Point – See MSDS

Viscosity, Brookfield – RVT, 25 °C, mPa·s (cP):

Spindle 3, speed 20 rpm 750 -1,750

TYPICAL PROPERTIES OF CURED MATERIAL

Physical Properties:

Coefficient of Thermal Expansion, ASTM D 696, K-1 Coefficient of Thermal Conductivity, ASTM C177, W/(m·K)

Specific Heat, kJ/(kg·K)

Elongation at break, ISO 37, %

TYPICAL PERFORMANCE OF CURED MATERIAL Adhesive Properties

Cured for 24 hours @ 22 °C

Compressive Shear Strength, ISO 10123: Steel pins and collars

Cured for 1 hour @ 93 °C, tested @ 22 °C

Compressive Shear Strength, ISO 10123: Steel pins and collars

N/mm² ≥19.3LMS

(psi) (≥2,800

N/mm² ≥24.1LMS

(psi) (≥3,500

Chemical/Solvent Resistance

Aged under conditions indicated and tested @ 22 °C.

		% of initial strength
Environment	°C	100 h	500 h	1000 h
Motor oil	125	100	100	100
Unleaded gasoline	22	100	100	100
Brake fluid	22	80	75	75
Water/glycol 50/50	87	100	90	80
Ethanol	22	95	95	95
Acetone	22	80	80	80