CPU-105-278C-A/B (80 Shore D)

Key feature

● Hardness: 80D

● Mixing ratio: 1:2

● Pot life: 15min

● High transparency

● Non-yellowing


CPU-105-278C-A/B can be applied to various substrates. Its applications include molding models, doming decals, nameplates and ornaments, and encapsulating electronic parts.

Technical Product Data





Clear to slightly yellow tint

Clear liquid

Ultimate hardness

78±3 Shore D (post conditioning at RT for 3 days)

Mixing ratio by weight

CPU-105-278C-A (Polyol):CPU-105-278C-B (Iso) = 1:2

Vacuum degassing time

3~4 min

Pot life

(from mixing A/B to non-flowing)

15 min at RT

Tack free time

2 hr at RT

Mixing time

30 sec

Low temperature curing condition

12 hr at 40~50or 24 hr at RT

* These items are provided as general information only. They are approximate values and are not considered part of

   the product specification.


CPU-105-278C-A and CPU-105-278C-B are two-component aliphatic polyurethane polyol mix and isocyanate mix, respectively, without solvent or plasticizer. The resultant elastomer is crystal clear and flexible in nature for doming, coating, encapsulation application, and has good adhesion to various substrates.

Thanks to its specially designed molecular structure, this product has excellent weather resistance and non-yellowing property.

This product complies with RoHS and does not have heavy metals.


20kg/drum or 200kg/drum.


To avoid the moisture in the air, CPU-105-278C-A and CPU-105-278C-B should be stored in closed containers at room temperature. Avoid direct sunlight exposure.