Frequently Asked Questions

Are we RoHS Compliant?
VTE Inc. is RoHS Compliant – Click Here to Refer to RoHS Standards
Conductive vs. Fastening Nuts

Conductive Fasteners (nuts)

Brass or plated brass nuts are used when a fastener is to be used in a conductive position. These conductive fasteners pass current more efficiently than steel. These nuts will be indicated by a ‘BLUE DOT’ marking, and should be kept in their conductive location.

Tightening Fasteners (nuts)

Stainless steel and steel nuts are used to torque or tighten an assembly. These fasteners are in a position where torque is necessary, but not conductivity. These fasteners are less expensive, thereby lowering the cost of the assembly, while increasing the amount of fastening torque allowed.

Define the term ‘Barrel’

Barrel: part of the insulator cap designed to cover the terminal length of the entering cable or wire.


Do your insulators have a shelf life?

When stored in accordance with normal warehouse conditions, the shelf life of our molded components can exceed 10 years without failure.


How to find terminal length?

Find the terminal length by measuring from the center of the terminal ring and the end of the exposed metal.
Use this measurement to determine the cap’s barrel length.

How to I determine a right or left side cable entry?
  1. Position insulator so terminal opening is facing down.
  2. Position insulator so cable entry is near you.
  3. Cable opening determines cable entry side.
What are my material options?
Material UL94 Flame Class Brittleness Temp oC Service TempoC Tensile Strength, PSI Elongation, % Tear Strength, PPI
V – Vinyl
(Standard, Self Extinguishing)
V-2 -48 105 1550 400 230
F – Vinyl
(FR Material, Non-Flammable)
V-0 -30 105 1500 350 230
T – TPR *
(Thermoplastic Rubber)
HB <-60 125 1020 450 131
S Material has been discontinued.
* Due to difficulties in molding with T material, not all insulators are available in this material. Please contact VTE Inc. for functional usefulness and availability.

Click Here to see comprehensive material properties.


What does the phrase ‘Cable Entry Size’ mean?

Cable Entry Size: Where the cable enters the cap.
To size, use the inner diameter of the entrance of the cap’s barrel.


What is a Cage Code?

VTE Inc. CAGE Code: 7z043 – Click Here for CAGE Code Definition

Energy Mission, Vision and Goals

What is a ring or eyelet terminal?

Ring Terminals often are brazed, with open end.
Lug terminals often are closed end, drawn from copper tube.
Both ring and lug terminals are considered eyelet terminals.

What is the post height?

Post Height: the height of the stud / post / screw that must be covered.
Use the body of the cap’s height for measurement.

What is the term ‘Terminal O.D.’ refer to?

Terminal O.D. (outside diameter) refers to the width of the terminal or eyelet ring.
Use this measurement to determine a cap’s body diameter.

Where do I get the measurement for the cap’s diameter?

The diameter of the portion of the cap that fits over the terminal and post.
The inside diameter of the cap’s body should match the outer diameter of the terminal and post.


Why use VTE battery terminal insulators?

Uncovered, ungrounded and live battery terminals create an electrical hazard.
According to CFR 183.420 (b) batteries must be installed so that metallic objects can’t come into contact with the ungrounded battery terminals. This is a law.


VTE Inc., offers a safe and inexpensive solution to keep your company in compliance with this law.
When installed properly, our caps provide protection from electrical hazards.