Type 410 is the original form of Nomex® paper. Widely used in the majority of electrical equipment applications, it is produced in thicknesses from 0.05 to 0.76 mm (2 to 30 mil) with specific gravities from 0.7 to 1.2. As a high-density product, it offers high inherent dielectric strength, mechanical toughness, flexibility and resilience. Nomex® Type 410 is used in almost every known sheet insulation application.

Type 411, a lower density version of Nomex® paper, it is available in thicknesses from 0.13 to 0.58 mm (5 to 23 mil), with a specific gravity of 0.3 and correspondingly lower electrical and mechanical properties. It is used in application such as motor phase insulation and transformer coil end filler, where high bulk and conformability are of prime importance, along with increased impregnability and saturability.

Type 414 is electrically and thermally similar to Nomex® Type 410 but is processed to produce a strong but more flexible and conformable sheet with an open surface. Produced in thicknesses from 0.09 to 0.38 mm (3.4 to 15 mil), with specific gravities from 0.9 to 1.0, it is designed for use as slot insulation in hand-wound motors, for linear wrapping of wire and as main insulation for fluid-filled and dry-type transformers, where conformability and impregnability are required.

Nomex® 910 is a unique aramid enhanced cellulose material, composed of high quality electrical grade cellulose pulp and the same binder made from high temperature meta-aramid polymer as used in other Nomex® brand papers. The paper consists of a single consolidated sheet without any additional binders or additives.

DuPont™ Nomex® Type 926 is a strong, high-dielectric, thermally-stable paper that is specifically designed for use as conductor insulation in liquid-immersed transformers. Type 926 is not appropriate for use as conductor insulation for dry type transformers. Initially, Type 926 is available only in a 0.05-mm (2-mil) thickness.

Type 992 PSB is a low-density pressboard which is designed for applications requiring a combination of electrical, mechanical and forming characteristics, such as barrier, gap spacers, end fillers, core tubes, and coil yokes. Nonelectrical applications include thermal barriers and gaskets. Type 992 offers a balance of superior formability, outstanding saturability and strong thermal performance, along with good electrical properties. This cost-effective pressboard product should only be used where the superior electrical properties of Type 993 are not required. Type 992 is available in two thicknesses – 1.6 and 3.2 mm (63 and 125 mil).

Type 993 PSB is a medium-density pressboard which offers a balance of rigidity and conformability along with outstanding saturability and excellent properties in air and oil. Typical applications include 3-dimensional parts such as V-rings, angle rings and spools, as well as barrier, gap spacers and core tubes. Type 993 is available in six thicknesses ranging from 1.0 to 4.0 mm.

Type 994 PSB is a densified, rigid board which has a unique combination of superior resistance to compression, even at elevated temperatures, along with relatively high oil absorption characteristics. This combination results in a product which is especially useful as spacers or other structural components in liquid-filled systems. With a specific gravity ranging from 1.1 to 1.2, Type 994 pressboard is available in 14 thicknesses from 1.0 to 9.6 mm (40 to 380 mils).

From mobile phones and tablet computers to flat-screen liquid crystal display (LCD) televisions, Nomex® paper is helping to protect critical components in a wide range of electronic applications.  A prime example is the use of Nomex® paper in LCD televisions as the insulation barrier, or "firewall," between the power module board and the cover plate.

he DuPont™ Nomex® 300 Series is a family of insulation products for less-demanding electrical applications where the full temperature resistance and/or mechanical strength of Nomex® 410 is not required.

Designed specifically to address the less-demanding requirements and increased cost constraints of electrical applications such as white goods, power tools and small HVAC units, the Nomex® 300 Series provides good value-in-use.

Nomex® 356

Nomex® 356 is a medium density paper that exhibits properties that are midway between Nomex® 410 and Nomex® 411. Designed for use as layer insulation within transformers and as phase insulation in hand-wound motors, it could also be used effectively as electrical and thermal barriers in appliance and electronic equipment applications. Nomex® 356 is produced in six thicknesses ranging from 0.13 mm (5 mil) to 0.51 mm (20 mil), with densities ranging from 0.66 g/cc to 0.68 g/cc.

Nomex® 416 LAM is a paper designed for use in electrical flexible laminate insulation.  It is produced in three thicknesses:  0.05 mm (2 mil), 0.08 mm (3 mil) and 0.13 mm (5 mil).  Nomex® based laminates are used to create high-integrity electrical insulation for motors, generators and transformers.  Several laminate constructions exist.  The most common are NM and NMN, where Nomex® paper and polyester film are used; and NK or NKN, where Nomex® paper and polyimide film are used.

Nomex® 464 LAM is a lightweight paper compared to Nomex® 416 LAM, but is intended for the same use in electrical flexible laminate insulation.  It is available in 0.05 mm (2 mil).  Similar laminate constructions can be found in the market, with either polyester film or polyimide film, depending on the thermal requirements of the application.

Nomex® 818 (50% mica) is designed for high-voltage applications, including: motor conductor and coil wrap, and transformer ground and layer insulation. It has high inherent dielectric strength (30 kV/mm [760 V/mil] to 40 kV/mm [1,015 V/mil]), but can also be readily impregnated with varnishes when desired. Nomex® 818 offers increased voltage endurance compared to Nomex® 410.

Nomex® 818 is available in thicknesses ranging from 0.08 mm (3 mil) to 0.25 mm (10 mil).

Nomex® 843S is designed for high voltage applications for slot outer corona protection, also known as conductive tape, on stator coils and bars in high voltage motor and generators , as well as for application in high voltage cable insulation.  It contains carbon fibers that allow the material to be electrically conductive.  Nomex® 843S has high thermal resistance, good abrasion resistance and good mechanical strength.  It is designed for up to thermal class 220°C and is optimized for impregnation with varnishes when desired.

Nomex® 843 is available only in a 0.05-mm (2-mil) thickness.

Nomex® 864 LAM is designed to address the increasing need for partial discharge resistance of inverter-driven motor insulation and to support the growing trend toward thinner insulation materials.  This lamination-grade paper is ideal for thin corona-resistant slot liners.  Laminates based on Nomex® 864 LAM can offer higher endurance to voltage stress occurring in inverter-driven motors or transformers associated with converters.  Common laminate constructions based on Nomex® 864 LAM are Type NMN and Type NKN.

Nomex® 864 LAM is available in thicknesses: 0.05-mm (2-mil) and 0.08-mm (3-mil).