ASTM D395 Method B Rubber Compression Set Tester Constant Deflection Testing Fixture for Elastomer CF8385

ASTM D395 Method B Compression Set Tester CF8385

The CF8385 Compression Set Tester evaluates the ability of rubber and elastomeric materials to recover their original thickness after prolonged compressive stress under constant deflection, per ASTM D395 Method B and ISO 815. The test is essential for quality control of gaskets, O-rings, seals, and vibration-damping components.

Key Features

• ASTM D395 Method B Compliant: Constant deflection method using precision-ground spacer bars for accurate compression ratio control of 25%.
• Multi-Specimen Capacity: Test fixture accommodates 3 cylindrical specimens simultaneously per ASTM specification for efficient batch testing.
• Precision-Ground Spacers: Hardened steel spacers maintain exact compression height with ±0.01mm tolerance across all test positions.
• Corrosion-Resistant Construction: 304 stainless steel plates and spacers withstand extended exposure to elevated temperatures and aggressive test environments.

Technical Specifications

Compliance Standards

ASTM D395 Method B, ISO 815-1, GB/T 7759.1

Standard Accessories

• 3-specimen compression fixture
• Precision spacers (25% compression)
• Specimen cutting die (29mm)
• Mounting and disassembly tools
• Calibration certificate and manual

Quality Assurance

12-month warranty. Replacement spacers and plates available.