ASTM D395 is the set of test methods for compression set in rubber, measuring how well an elastomer recovers after prolonged compression. To match this to your program, talk with our team.
What ASTM D395 Covers
It quantifies the permanent deformation that remains after a rubber specimen is held compressed for a set time and temperature, a key indicator of sealing durability.
How the Test Is Run
A specimen is compressed to a fixed deflection or under a fixed load in a jig, held at temperature for a defined period, released, and the residual thickness change is measured as the compression set.
Why It Matters
Compression set predicts how gaskets and seals retain their shape and sealing over service; controlled compression fixtures and thickness measurement are used.
Reading the Designation
Cited as ASTM D395 with its edition year. Confirm the edition and specimen requirements before finalizing setup. To configure a rubber testing setup, request a quote.
Related Standards
ISO 815-1 is the ISO compression set method and ISO 7743 covers compression stress-strain.
Request a Quote
Setting up rubber compression set testing to ASTM D395? Request a quote and our team will help you build a system matched to your compound type and temperature.
TensileMill CNC products for ASTM D395
Our specimen-preparation systems and testing equipment compatible with ASTM D395:
Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell
Pneumatic Clamping Grips for Consistent Specimen Holding
Pneumatic clamping grips for consistent, high-cycle holding
Build your ASTM D395 workflow with TensileMill CNC
TensileMill CNC builds testing systems used across quality control, research, and production. Depending on your specimens, that can include universal testing machines with pneumatic grips and cutting dies for rubber and elastomer specimens. Request a quote and our team will help you configure a system for ASTM D395.