Wire Terminal Insulation Types

Wire Terminal Insulation Types

Available wire terminal insulation types and materials include:

Non-Insulated Terminals:

The most economical terminal – used where special performance or installation characteristics are not needed. Beveled mouth facilitates wire insertion. Maximum temperature for bare terminals: 175°C/347°F.

Vinyl Insulated Terminals:

Used where insulated barrel is necessary and desirable. Features an insulation sleeve of color-coded polyvinyl chloride (PVC) permanently tapered to the barrel. It is molded as a funnel entry sleeve to eliminate wire strand hang-up, which in turn, increases crimping rates. The PVC insulated terminal offers excellent insulating qualities as well as protection against vibration damage.

Wire insulation positions itself against funnel portion of vinyl sleeve thus eliminating strand hang-up. Crimping barrel and flared portion of sleeve provide excellent electrical contact plus mechanical stress relief at junction of insulation and barrel. Insulation has a non-slip ridge for ease of positioning crimping tool. Industry standard color-coding indicates wire range. Insulators are rated at a continuous operating temperature range from -40°C to 105°C/-40°F to 220°F.

Nylon Insulated Terminals:

Features a tin-plated brass-gripping sleeve which strengthens the barrel and secures the wire. This barrel is fitted with a funnel entry, color-coded sleeve to offer excellent insulating qualities. The ultimate in rugged construction and high performance quality, nylon insulated terminals protect against stress and high vibration.

Nylon Insulated Butted Seam With Insulation Grip:

Used where insulated barrel and positive insulation grip are necessary and desirable. Terminal consists of butted seam part with flared, seamless brass sleeve securely attached and covered with flared, molded nylon sleeve. Wire insulation positions itself against funnel portion of brass sleeve. Crimping barrel and flared portion of sleeve provide excellent electrical contact plus mechanical stress relief at junction of insulation and barrel. Positioning crimp tool is nearly mistake-proof due to a “step” in nylon insulation. Industry standard color-coding indicates wire range. Insulators are rated at a continuous operating temperature range from -40°C to 105°C/-40°F to 220°F.

Heat Shrink Insulated:

Heat Shrink Insulated Terminals protect against the most challenging of environments making the best moisture protection available. Read below for more information on the several advantages Heat Shrink Terminals offer over conventional unsealed products.

Heat Shrink Terminal Characteristics:

  • Corrosion Resistance – The adhesive-lined heat shrink material, when properly crimped and shrunk, provides a seal resistant to water, salt, steam and other contaminants.
  • Improved Mechanical Performance – The adhesive-lined heat shrink tubing adheres, when shrunk, to both the connector and the wire insulation providing improved pullout strength and strain relief.
  • Durable – Tough heat shrink tubing effectively resists abrasion, scoring, cut-through, and the effects of long term aging.
  • Versatile and Easy to Use – Heat Shrink Terminals are available in wire sizes 22-10 AWG and can be installed easily with a recommended tool and heat source.

High Temperature Terminals:

High Temperature Terminals are often used in ovens, motors, light fixtures and other applications where other terminals would corrode or melt. High Temperature Terminals are constructed of steel with a nickel plating. They have a temperature rating for continuous use at 482°C/900°F and intermittent use at 667°C/1200°F.

Note: there is no applicable UL or CSA standard for high temperature steel parts.