Insulator / Seal: Temperature Range -60°C to +300°C, CTI >600 V

Q: What is the primary function of a feedthrough insulator/seal?

To simultaneously provide electrical insulation and environmental sealing where conductors or mechanical elements pass through equipment barriers.

Q: How do temperature variations affect insulator/seal performance?

Temperature changes cause material expansion/contraction, potentially compromising seal integrity and dielectric properties if not properly designed with compatible CTE materials.

Component Specifications

Definition

A specialized feedthrough component designed to maintain electrical insulation while providing hermetic or environmental sealing between different pressure zones or media in industrial machinery. It prevents electrical leakage, arcing, and contamination while allowing conductors or mechanical elements to pass through barriers.

Working Principle

Utilizes dielectric materials with specific resistivity and dielectric strength to block electrical current flow while employing compression, adhesion, or molded designs to create impermeable seals against gases, liquids, or particulates.

Materials

Ceramic (alumina, steatite), glass, engineered plastics (PTFE, PEEK, polyimide), elastomers (silicone, fluorocarbon), composite materials with dielectric fillers.

Technical Parameters

Parameter	Typical range	Notes & selection driver
CTI	>600 V
IP Rating	IP67-IP69K
Leakage Current	<1 μA at rated voltage
Pressure Rating	Up to 100 bar
Temperature Range	-60°C to +300°C
Dielectric Strength	10-50 kV/mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 14644, IEC 60601, DIN 40050, ASTM D149

Parent Products

This component is used in the following industrial products

Feedthrough

A vacuum-tight electrical, fluid, or mechanical connection that passes through the wall of a vacuum chamber.

View Product Details

Engineering Analysis

Risks & Mitigation

Dielectric breakdown under overvoltage
Seal degradation from chemical exposure
Thermal stress cracking
Partial discharge in voids

FMEA Triads

Trigger: Material contamination during manufacturing
Failure: Reduced dielectric strength leading to electrical leakage
Mitigation: Implement cleanroom assembly and material purity testing

Trigger: Incorrect installation torque
Failure: Compression seal failure causing environmental ingress
Mitigation: Specify and verify torque values during installation

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions, dielectric properties within ±5% of specification

Test Method

High potential testing per IEC 60137, helium leak testing per ASTM E493, thermal cycling per MIL-STD-810

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Insulator / Seal

Manufacturer profiles associated with Insulator / Seal.

Sourcing Insulator / Seal from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Chrome Plating

Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What is the primary function of a feedthrough insulator/seal?