Enrollment Deadline: 10 June 2025

Participants will report percent compression of samples after 22 hours in a 70°C oven. Testing is conducted in accordance with ASTM D395 Method B.

Sample Description: Two sample sets, each consisting of three compression set buttons, for a total of six buttons. The buttons are molded from EPDM with a diameter of 29.0 mm (±0.5 mm) and thickness of 12.5 mm (±0.5 mm).

Samples ship in August and November for a total of two shipments.

Additional Information: Participants will need to verify sample thickness upon receipt. Transverse cutting and buffering of samples per ASTM D395 may be needed to achieve the required thickness.

This test is included on CTS' Scope of Accreditation to ISO/IEC 17043.