Curing Times

Room temperature 22°C (72°F)
using a longwave black light of15 watts (365 nm) approx. 25 mmabove the element
12 minutes

Room temperature 22°C (72°F) without UV exposure or additional heat
48 hours

Safety Instructions

Although LENS BOND is quite safe to use, some persons may be sensitive to the chemicals,
and therefore, should use finger cots or gloves. Furthermore, adequate ventilation should be

Please note

Pre-cure time presupposes at least 70% UV transmission of the elements
being bonded. After pre-curing the elements can be placed in an oven at
70°C for 1 hour for full cure. But for best low stress results, room
temperature is suggested for full curing.

Technical Data

Viscosity: 275 cps to 320 cps
Refractive Index: 1,55 at 25°C (full cured) resp. 1,53 (uncured)
Operational Temperature Range: -54°C (-65°F) to +100°C (+212°F)
Shear Strength: 5,200 lb/inch2
Dielectric Contrast: 3 at 106 cps
Water Absorption: 0,3% (24 hours, 25°C)
Shrinking in Cure: approx. 4%
pH: 3,2
Specific Gravity: 1,22
Shore D Hardness: approx. 90
Thermal Conductivity: 500 x 10–6 cal (sec) (cm2) (°C) (cm)
Flash Point (uncured): 50°C
Shipping and Storage: No special handling; should be kept
from intense light and elevated temperatures.

Shelf Life: 18 months from date of manufacture

Packing Size: 114 g (4 oz)