ELANTAS EN-2553

Main features

Filled Flame-Retardant Polyurethane Potting System for Components
4,500 cP Mixed Viscosity
UL 94 V-0 Classification

Product Description

CONATHANE® EN-2553 Polyurethane Encapsulant is a two-component, filled, flame-retardant polyurethane potting system for electronic components, modules, circuit boards, assemblies, and related devices. The brown Part A and black or blue Part B are mixed at 17:100 by weight to produce a typical initial viscosity of 4,500 cP and a 55-minute work life at 25°C. The system is documented for low-stress cure and thermal-shock resistance, with cure options of seven days at 25°C or 16 hours at 80°C. Typical cured properties include Shore A 95 hardness, 60% elongation, and UL 94 V-0 at 3 mm.

Key features

Filled flame-retardant polyurethane: The cured material is documented as UL 94 V-0 at 3 mm.
55-minute work life: Typical initial mixed viscosity is 4,500 cP at 25°C.
Low-stress protection: The system is documented for sensitive components and thermal-shock resistance.

Applications / Suitable for

Electronic components and modules
Circuit boards and assemblies
Low-stress encapsulation of sensitive devices

TDS, SDS & Technical Documents

Technical Specifications

No specifications available.

Additional Information

Technical properties

As-supplied / before-processing properties

Typical as-supplied or processing-state values unless otherwise stated. These values are not sales specifications.

Property	Value	Unit	Method / condition
Part A viscosity	300	cP	At 25°C
Part B viscosity	8,500	cP	At 25°C
Part A specific gravity	1.24	N/A	At 25°C
Part B specific gravity	1.49	N/A	At 25°C
Mix ratio	17:100	parts by weight	Part A : Part B
Initial mixed viscosity	4,500	cP	At 25°C
Work life	55	min	At 25°C
Cure options	7 days at 25°C; 16 h at 80°C	N/A	Documented schedules