Editorial Technical Reference

Molded Rubber Part

This page explains how Molded Rubber Part is classified within Rubber and Plastic Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A molded rubber part is a custom-shaped elastomeric component produced by compression, transfer, or injection molding, used for sealing, damping, or protection in various industries.

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Product Specifications

Technical details and manufacturing context for Molded Rubber Part

Definition

Molded rubber parts are widely used in automotive, industrial, and consumer applications for sealing, vibration isolation, and environmental protection. They are specified by material type (e.g., NBR, EPDM, silicone), hardness (Shore A), dimensions, and performance requirements such as temperature resistance and compression set. Grades are distinguished by the base polymer, filler content, and curing system, which affect properties like oil resistance, weatherability, and durability.

Working Principle

The part works by deforming elastically under load, providing a barrier against fluids or gases, absorbing vibration, or maintaining contact pressure. Its performance depends on the elastomer's viscoelastic behavior, which allows it to recover its original shape after deformation, and its ability to maintain sealing force over time.

Common Materials

NBR (Nitrile Butadiene Rubber), EPDM (Ethylene Propylene Diene Monomer), Silicone (VMQ), FKM (Fluoroelastomer), CR (Chloroprene Rubber)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness (Shore A)	30–90 Shore A	Typical range for molded rubber parts.ISO 7619-1
Tensile Strength	5–25 MPa	Depends on material and formulation.ISO 37
Elongation at Break	100–600 %	Higher for softer compounds.ISO 37
Compression Set	10–30 %	At 70°C for 22h, typical for sealing.ISO 815
Operating Temperature Range	-40 to 150 °C	Depends on material; silicone can go higher.
Tolerance Class	M1–M3 class	M1 is tightest, M3 is general purpose.ISO 3302-1
Surface Finish	Ra 0.8–3.2 μm	Depends on mold finish.
Tear Strength	20–80 kN/m	Resistance to tearing.ISO 34-1
Density	1.1–1.6 g/cm³	Varies with material and fillers.ISO 1183
Volume Resistivity	10^10–10^15 Ω·cm	For insulating applications.ASTM D257
Dielectric Strength	10–30 kV/mm	For electrical insulation.ASTM D149
Abrasion Resistance	50–200 mm³	Volume loss; lower is better.ISO 4649
Ozone Resistance	No cracks after 72h h	For outdoor use.ISO 1431-1
Oil Resistance (Volume Change)	0–30 %	In IRM 903 oil, 70h at 100°C.ASTM D471
Color	Black, custom	Black is standard; custom colors available.

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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Molded Rubber Part.

Published Manufacturer Relationships

Source-reviewed profile relationships currently associated with Molded Rubber Part

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Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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