Our economical 4" Unbonded Capping Steel Retainer Ring Set is a precision-machined, high-alloy steel retaining cap and holds compression pads that fit over the ends of a concrete cylinder. Price includes 2 retainer rings.
The unbondable pad cap system provides a clean, fast and economical way of preparing concrete cylinders for compression testing. Our steel retainers are rated for 100,000psi tensile strength with bearing surfaces ground plane to within .002”.
Meets Test Methods:
AASHTO T22, T851
ASTM C 1231